Update vim-go to v1.20

2019-06-03 15:58:18 +01:00 · 2019-06-03 15:58:18 +01:00 · 566926ad64
commit 566926ad64
parent b815d29703
114 changed files with 8345 additions and 2826 deletions
--- a/pack/acp/start/vim-go/.codecov.yml
+++ b/pack/acp/start/vim-go/.codecov.yml
@ -6,6 +6,7 @@ coverage:
        target: auto
        threshold: 1
        base: auto
    patch: off
 comment: false
 ignore:
  - "!autoload/go/*.vim$"
--- a/pack/acp/start/vim-go/.coveragerc
+++ b/pack/acp/start/vim-go/.coveragerc
@ -1,3 +1,3 @@
 [run]
 plugins = covimerage
-data_file = .coverage.covimerage
+data_file = .coverage_covimerage
--- a/pack/acp/start/vim-go/.dockerignore
+++ b/pack/acp/start/vim-go/.dockerignore
@ -1,2 +1,6 @@
 .local/
 .config/
 .cache/
 .dlv/
 .git/
 .viminfo
--- a/pack/acp/start/vim-go/.github/ISSUE_TEMPLATE.md
+++ b/pack/acp/start/vim-go/.github/ISSUE_TEMPLATE.md
@ -9,14 +9,13 @@
 ### Configuration (**MUST** fill this out):
-* Vim version (first two lines from `:version`):
+* vim-go version:
 * `vimrc` you used to reproduce (use a *minimal* vimrc with other plugins disabled; do not link to a 2,000 line vimrc):
 * Vim version (first three lines from `:version`):
 * Go version (`go version`):
 * Go environment (`go env`):
 * vim-go version:
 * `vimrc` you used to reproduce (use a *minimal* vimrc with other plugins disabled; do not link to a 2,000 line vimrc):
--- a/pack/acp/start/vim-go/.travis.yml
+++ b/pack/acp/start/vim-go/.travis.yml
@ -1,4 +1,6 @@
 language: go
 go:
  - 1.12.1
 notifications:
  email: false
 matrix:
@ -6,9 +8,16 @@ matrix:
    - env: SCRIPT="test -c" VIM_VERSION=vim-7.4
    - env: SCRIPT="test -c" VIM_VERSION=vim-8.0
    - env: SCRIPT="test -c" VIM_VERSION=nvim
-    - env: SCRIPT=lint VIM_VERSION=vim-8.0
+    - env: ENV=vimlint SCRIPT=lint VIM_VERSION=vim-8.0
      language: python
      python: 3.6
 install:
  - ./scripts/install-vim $VIM_VERSION
-  - pip install --user vim-vint covimerage codecov
+  - |
    if [ "$ENV" = "vimlint" ]; then
      pip install vim-vint covimerage codecov pathlib
    else
      pip install --user vim-vint covimerage codecov pathlib
    fi
 script:
  - ./scripts/$SCRIPT $VIM_VERSION
--- a/pack/acp/start/vim-go/CHANGELOG.md
+++ b/pack/acp/start/vim-go/CHANGELOG.md
@ -1,11 +1,314 @@
 ## unplanned
 ## 1.20 - (April 22, 2019)
 FEATURES:
 * ***gopls support!***
  * use gopls for autocompletion by default in Vim8 and Neovim.
  * use gopls for `:GoDef` by setting `g:go_def_mode='gopls'`.
  * use gopls for `:GoInfo` by setting `g:go_info_mode='gopls'`.
 * Add support for golangci-lint.
  * set `g:go_metalinter_command='golangci-lint'` to use golangci-lint instead
    of gometalinter.
 * New `:GoDefType` command to jump to a type definition from an instance of the
  type.
 BACKWARDS INCOMPATABILITIES:
 * `g:go_highlight_function_arguments` is renamed to `g:go_highlight_function_parameters`
  [[GH-2117]](https://github.com/fatih/vim-go/pull/2117)
 IMPROVEMENTS:
 * Disable `g:go_gocode_propose_source` by default.
  [[GH-2050]](https://github.com/fatih/vim-go/pull/2050)
 * Don't spam users when Vim is run with vi compatibility.
  [[GH-2055]](https://github.com/fatih/vim-go/pull/2055)
 * Add bang support to lint commands to allow them to be run without jumping to
  errors.
  [[GH-2056]](https://github.com/fatih/vim-go/pull/2056)
 * Use `go doc` for `:GoDoc` instead of `godoc`.
  [[GH-2070]](https://github.com/fatih/vim-go/pull/2070)
 * Detach from and shutdown dlv correctly.
  [[GH-2075]](https://github.com/fatih/vim-go/pull/2075)
 * Do not require `'autowrite'` or `'autowriteall'` to be set when using
  autocompletion in module mode.
  [[GH-2091]](https://github.com/fatih/vim-go/pull/2091)
 * Fix use of `g:go_metalinter_command` _and_ apply it even when autosaving.
  [[GH-2101]](https://github.com/fatih/vim-go/pull/2101)
 * Report errors in quickfix when Delve fails to start (e.g. compiler errors).
  [[GH-2111]](https://github.com/fatih/vim-go/pull/2111)
 * Support `'undo_ftplugin'`, make most autocmds buffer-local, and only do the
  bare minimum based on file names alone.
  [[GH-2108]](https://github.com/fatih/vim-go/pull/2108)
 * Write a message when `:GoInfo` can't display any results when `g:go_info_mode='gocode'`.
  [[GH-2122]](https://github.com/fatih/vim-go/pull/2122)
 * Highlight fields followed by an operator when `g:go_highlight_fields` is set.
  [[GH-1907]](https://github.com/fatih/vim-go/pull/1907)
 * Skip autosave actions when the buffer is not a readable file.
  [[GH-2143]](https://github.com/fatih/vim-go/pull/2143)
 * Run `godef` from the current buffer's directory to make sure it works with modules.
  [[GH-2150]](https://github.com/fatih/vim-go/pull/2150)
 * Add a function, `go#tool#DescribeBalloon`, to show information in a balloon
  with `'balloonexpr'`. (Vim8 only).
  [[GH-1975]](https://github.com/fatih/vim-go/pull/1975)
 * Add initial support for `gopls`.
  [[GH-2163]](https://github.com/fatih/vim-go/pull/2163).
 * Add `:GoDefType` to jump to the type definition of the identifier under the
  cursor.
  [[GH-2165]](https://github.com/fatih/vim-go/pull/2165)
 * Notify gopls about changes.
  [[GH-2171]](https://github.com/fatih/vim-go/pull/2171)
 * Respect `g:go_jump_to_error` when running `gometalinter` automatically on
  save.  [[GH-2176]](https://github.com/fatih/vim-go/pull/2176)
 * Use gopls for code completion by default in Vim8 and Neovim.
  [[GH-2172]](https://github.com/fatih/vim-go/pull/2172)
 * Add support for golangci-lint.
  [[GH-2182]](https://github.com/fatih/vim-go/pull/2182)
 * Show hover balloon using gopls instead of gocode.
  [[GH-2202]](https://github.com/fatih/vim-go/pull/2202)
 * Add a new option, `g:go_debug_log_output`, to control logging with the
  debugger.
  [[GH-2203]](https://github.com/fatih/vim-go/pull/2203)
 * Do not jump to quickfix or location list window when bang is used for async
  jobs or linting.
  [[GH-2205]](https://github.com/fatih/vim-go/pull/2205)
 * Tab complete package names for commands from vendor directories and in
  modules.
  [[GH-2213]](https://github.com/fatih/vim-go/pull/2213)
 * Add support for `gopls` to `g:go_info_mode`.
  [[GH-2224]](https://github.com/fatih/vim-go/pull/2224)
 BUG FIXES:
 * Fix opening of non-existent file from `:GoDeclsDir` when the current
  directory is not the directory containing the current buffer.
  [[GH-2048]](https://github.com/fatih/vim-go/pull/2048)
 * Fix jumping to an identifier with godef from a modified buffer.
  [[GH-2054]](https://github.com/fatih/vim-go/pull/2054)
 * Fix errors when `g:go_debug` contains `debugger-commands`.
  [[GH-2075]](https://github.com/fatih/vim-go/pull/2075)
 * Fix errors from `:GoDebugStop` in Neovim.
  [[GH-2075]](https://github.com/fatih/vim-go/pull/2075)
 * Fix `:GoSameIdsToggle`.
  [[GH-2086]](https://github.com/fatih/vim-go/pull/2086)
 * Do not set fileencoding or fileformat options or populate from template when
  the buffer is not modifiable.
  [[GH-2097]](https://github.com/fatih/vim-go/pull/2097)
 * Do not clear buffer-local autocmds of other buffers. 
  [[GH-2109]](https://github.com/fatih/vim-go/pull/2109)
 * Highlight return parameter types when g:go_highlight_function_arguments is
  set.  [[GH-2116]](https://github.com/fatih/vim-go/pull/2116)
 * Fix lockup in Neovim when trying to run `:GoDebugTest` when there are no
  tests.  [[GH-2125]](https://github.com/fatih/vim-go/pull/2125)
 * Keep track of breakpoints correctly when buffer is edited after breakpoints
  are set.
  [[GH-2126]](https://github.com/fatih/vim-go/pull/2126)
 * Fix race conditions in `:GoDebugStop`.
  [[GH-2127]](https://github.com/fatih/vim-go/pull/2127)
 * Fix jumping to module or package using godef.
  [[GH-2141]](https://github.com/fatih/vim-go/pull/2141)
 * Fix errors caused by redefining functions within functions.
  [[GH-2189]](https://github.com/fatih/vim-go/pull/2189)
 * Highlight pre-release and metadata in versions in go.mod.
  [[GH-2192]](https://github.com/fatih/vim-go/pull/2192)
 * Handle runtime panics from `:GoRun` when using Neovim's terminal.
  [[GH-2209]](https://github.com/fatih/vim-go/pull/2209)
 * Fix adding tag option when a tag is added.
  [[GH-2227]](https://github.com/fatih/vim-go/pull/2227)
 ## 1.19 - (November 4, 2018)
 FEATURES:
 * **go.mod file support!** This is the first feature for upcoming Go modules
  support. The followings are added:
  * Syntax highlighting for the `go.mod` file. 
  * A new `gomod` filetype is set if a `go.mod` file has been opened and starts
    with the line `module `
  * New **:GoModFmt** command that formats the `go.mod` file
  * Auto format on save feature for `:GoModFmt`, enabled automatically. Can be
    toggled of with the setting `g:go_mod_fmt_autosave` or with the command:
    `GoModFmtAutoSaveToggle`
    [[GH-1931]](https://github.com/fatih/vim-go/pull/1931)
 IMPROVEMENTS:
 * Unify async job handling for Vim8 and Neovim.
  [[GH-1864]](https://github.com/fatih/vim-go/pull/1864)
 * Document Vim and Neovim requirements in README.md and help file.
  [[GH-1889]](https://github.com/fatih/vim-go/pull/1889)
 * Highlight `context.Context` when `g:go_highlight_extra_types` is set.
  [[GH-1903]](https://github.com/fatih/vim-go/pull/1903)
 * Run gometalinter asynchronously in Neovim.
  [[GH-1901]](https://github.com/fatih/vim-go/pull/1901)
 * Run gorename asynchronously in Vim8 and Neovim.
  [[GH-1894]](https://github.com/fatih/vim-go/pull/1894)
 * Install keyify from its canonical import path.
  [[GH-1924]](https://github.com/fatih/vim-go/pull/1924)
 * Update the tested version of Neovim to v0.3.1.
  [[GH-1923]](https://github.com/fatih/vim-go/pull/1923)
 * Run autocompletion asynchronously in Vim8 and Neovim.
  [[GH-1926]](https://github.com/fatih/vim-go/pull/1926)
 * Show statusline update when running `:GoInfo` with `g:go_info_mode='gocode'`.
  [[GH-1937]](https://github.com/fatih/vim-go/pull/1937)
 * Do not update statusline when highlighting sameids or showing type info via
  an autocmd.
  [[GH-1937]](https://github.com/fatih/vim-go/pull/1937)
 * Do not indent within a raw string literal.
  [[GH-1858]](https://github.com/fatih/vim-go/pull/1858)
 * Highlight Go's predeclared function identifiers (the functions in `builtins`)
  using keyword groups and highlight them using the `Identifiers` group.
  [[GH-1939]](https://github.com/fatih/vim-go/pull/1939)
 * Add a new FAQ entry to instruct users how to modify the vim-go highlight
  groups.
  [[GH-1939]](https://github.com/fatih/vim-go/pull/1939)
 * Improve use of statusline and progress messages.
  [[GH-1948]](https://github.com/fatih/vim-go/pull/1948)
 * Add `tt` snippet to create a table test boilerplate (see
  https://github.com/golang/go/wiki/TableDrivenTests for more information on
  how to use a table driven test).
  [[GH-1956]](https://github.com/fatih/vim-go/pull/1956)
 * Add `<Plug>(go-decls)` and `<Plug>(go-decls-dir)` mappings.
  [[GH-1964]](https://github.com/fatih/vim-go/pull/1964)
 * Handle go1.11 test output.
  [[GH-1978]](https://github.com/fatih/vim-go/pull/1978)
 * Internal: install tools by their custom names
  [[GH-1984]](https://github.com/fatih/vim-go/pull/1984)
 * Support the go-debugger features in Neovim.
  [[GH-2007]](https://github.com/fatih/vim-go/pull/2007)
 * color the statusline for termguicolors and Neovim.
  [[GH-2014]](https://github.com/fatih/vim-go/pull/2014)
 * add an option to disable highlighting of breakpoints and the current line
  when debugging.
  [[GH-2025]](https://github.com/fatih/vim-go/pull/2025)
 * Update autocompletion to work with Go modules.
  [[GH-1988]](https://github.com/fatih/vim-go/pull/1988)
 * Add an option to search $GOPATH/bin or $GOBIN _after_ $PATH.
  [[GH-2041]](https://github.com/fatih/vim-go/pull/2041)
 BUG FIXES:
 * Fix `:GoRun %` on Windows.
  [[GH-1900]](https://github.com/fatih/vim-go/pull/1900)
 * Fix `go#complete#GetInfo()` to return a description of the identifier.
  [[GH-1905]](https://github.com/fatih/vim-go/pull/1905)
 * Restore support for running tests in the Neovim terminal.
  [[GH-1895]](https://github.com/fatih/vim-go/pull/1895)
 * Fix `:GoInfo` when `g:go_info_mode` is `gocode`
  [[GH-1915]](https://github.com/fatih/vim-go/pull/1915)
 * Fix highlighting of pointer type in var blocks.
  [[GH-1794]](https://github.com/fatih/vim-go/pull/1794)
 * Fix `:GoImport` when adding to an empty import block (i.e`import ()`)
  [[GH-1938]](https://github.com/fatih/vim-go/pull/1938)
 * Run shell commands with shellcmdflag set to `-c`.
  [[GH-2006]](https://github.com/fatih/vim-go/pull/2006)
 * Use the correct log output option for delve.
  [[GH-1992]](https://github.com/fatih/vim-go/pull/1992)
 * Pass empty arguments correctly in async jobs on Windows.
  [[GH-2011]](https://github.com/fatih/vim-go/pull/2011)
 * Don't close godoc scratch window when using arrow keys.
  [[GH-2021]](https://github.com/fatih/vim-go/pull/2021)
 BACKWARDS INCOMPATIBILITIES:
 * Bump minimum required version of Vim to 7.4.2009.
  [[GH-1899]](https://github.com/fatih/vim-go/pull/1899)
 * Switch gocode to github.com/mdempsky/gocode. Several gocode options have been
  removed and a new one has been added.
  [[GH-1853]](https://github.com/fatih/vim-go/pull/1853)
 ## 1.18 - (July 18, 2018)
 FEATURES:
 * Add **:GoIfErr** command together with the `<Plug>(go-iferr)` plug key to
  create a custom mapping. This command generates an `if err != nil { return ...  }` 
  automatically which infer the type of return values and the numbers.
  For example:
  ```
  func doSomething() (string, error) {
      f, err := os.Open("file")
  }
  ```
  Becomes:
  ```
  func doSomething() (string, error) {
      f, err := os.Open("file")
      if err != nil {
          return "", err
      }
  }
  ```
 * Two new text objects has been added: 
  * `ic` (inner comment) selects the content of the comment, excluding the start/end markers (i.e: `//`, `/*`)
  * `ac` (a comment) selects the content of the whole commment block, including markers
  To use this new feature, make sure you use use the latest version of
  [motion](https://github.com/fatih/motion). You can update the tool from Vim
  via `:GoUpdateBinaries`
  [[GH-1779]](https://github.com/fatih/vim-go/pull/1779)
 * Add `:GoPointsTo` to show all variables to which the pointer under the cursor
  may point to.
  [[GH-1751]](https://github.com/fatih/vim-go/pull/1751)
 * Add `:GoReportGitHubIssue` to initialize a new GitHub issue with as much data
  that our template requests as possible.
  [[GH-1738]](https://github.com/fatih/vim-go/pull/1738)
 IMPROVEMENTS:
 * Add build tags (with `g:go_build_tags`) to all commands that support it.
  [[GH-1705]](https://github.com/fatih/vim-go/pull/1705)
 * Some command which operate on files (rather than Vim buffers) will now show a
  warning if there are unsaved buffers, similar to Vim's `:make`.
  [[GH-1754]](https://github.com/fatih/vim-go/pull/1754)
 * Don't return an error from `:GoGuru` functions when the import path is
  unknown and scope is unneeded.
  [[GH-1826]](https://github.com/fatih/vim-go/pull/1826)
 * Performance improvements for the `go.vim` syntax file.
  [[GH-1799]](https://github.com/fatih/vim-go/pull/1799)
 * Allow `GoDebugBreakpoint` and `GoDebugCurrent` highlight groups to be
  overridden by user configuration.
  [[GH-1850]](https://github.com/vim-go/pull/1850)
 * Strip trailing carriage returns from quickfix errors that are parsed
  manually. [[GH-1861]](https://github.com/fatih/vim-go/pull/1861).
 * Cleanup title of terminal window.
  [[GH-1861]](https://github.com/fatih/vim-go/pull/1861).
 * Add `:GoImpl` is able to complete interfaces by their full import path in
  addition to the current package name (i.e: `:GoImpl t *T github.com/BurntSushi/toml.Unmarshaller` 
  is now possible)
  [[GH-1884]](https://github.com/fatih/vim-go/pull/1884)
 BUG FIXES:
 * Update the correct window's location list after a long running async job
  completes, even when the user changes their window layout while the job is
  running.
  [[GH-1734]](https://github.com/fatih/vim-go/pull/1734)
 * Apply debugger mappings only for Go buffers, and not all buffers.
  [[GH-1696]](https://github.com/fatih/vim-go/pull/1696)
 * The `gohtmltmpl` filetype will now highlight `{{ .. }}` syntax HTML attributes
  and some other locations.
  [[GH-1790]](https://github.com/fatih/vim-go/pull/1790)
 * Use the correct logging flag argument for delve.
  [[GH-1809]](https://github.com/fatih/vim-go/pull/1809)
 * Fix gocode option string values that would cause gocode settings not to set
  correctly
  [[GH-1818]](https://github.com/fatih/vim-go/pull/1818)
 * Fix Neovim handling of guru output.
  [[GH-1846]](https://github.com/fatih/vim-go/pull/1846)
 * Execute commands correctly when they are in $GOBIN but not $PATH.
  [[GH-1866]](https://github.com/fatih/vim-go/pull/1866)
 * Open files correctly with ctrlp.
  [[GH-1878]](https://github.com/fatih/vim-go/pull/1878)
 * Fix checking guru binary path 
  [[GH-1886]](https://github.com/fatih/vim-go/pull/1886)
 * Add build tags to `:GoDef` if only it's present 
  [[GH-1882]](https://github.com/fatih/vim-go/pull/1882)
 ## 1.17 - (March 27, 2018)
 FEATURES:
 * **Debugger support!** Add integrated support for the
-  [`delve`](https://github.com/derekparker/delve) debugger. Use
+  [`delve`](https://github.com/go-delve/delve) debugger. Use
  `:GoInstallBinaries` to install `dlv`, and see `:help go-debug` to get
  started.
  [[GH-1390]](https://github.com/fatih/vim-go/pull/1390)
--- a/pack/acp/start/vim-go/Dockerfile
+++ b/pack/acp/start/vim-go/Dockerfile
@ -1,4 +1,4 @@
-FROM golang:1.9.2
+FROM golang:1.12.1
 RUN apt-get update -y && \
  apt-get install -y build-essential curl git libncurses5-dev python3-pip && \
--- a/pack/acp/start/vim-go/Makefile
+++ b/pack/acp/start/vim-go/Makefile
@ -1,6 +1,6 @@
 VIMS ?= vim-7.4 vim-8.0 nvim
-all: install test lint
+all: install lint test
 install:
 	@echo "==> Installing Vims: $(VIMS)"
--- a/pack/acp/start/vim-go/README.md
+++ b/pack/acp/start/vim-go/README.md
@ -9,11 +9,11 @@
 This plugin adds Go language support for Vim, with the following main features:
 * Compile your package with `:GoBuild`, install it with `:GoInstall` or test it
-  with `:GoTest`. Run a single tests with `:GoTestFunc`).
+  with `:GoTest`. Run a single test with `:GoTestFunc`).
 * Quickly execute your current file(s) with `:GoRun`.
 * Improved syntax highlighting and folding.
 * Debug programs with integrated `delve` support with `:GoDebugStart`.
-* Completion support via `gocode`.
+* Completion support via `gocode` and `gopls`.
 * `gofmt` or `goimports` on save keeps the cursor position and undo history.
 * Go to symbol/declaration with `:GoDef`.
 * Look up documentation with `:GoDoc` or `:GoDocBrowser`.
@ -33,10 +33,13 @@ This plugin adds Go language support for Vim, with the following main features:
 ## Install
 vim-go requires at least Vim 7.4.2009 or Neovim 0.3.1.
 The [**latest stable release**](https://github.com/fatih/vim-go/releases/latest) is the
 recommended version to use. If you choose to use the master branch instead,
 please do so with caution; it is a _development_ branch.
 vim-go follows the standard runtime path structure. Below are some helper lines
 for popular package managers:
@ -45,7 +48,9 @@ for popular package managers:
 * [Pathogen](https://github.com/tpope/vim-pathogen)
  * `git clone https://github.com/fatih/vim-go.git ~/.vim/bundle/vim-go`
 * [vim-plug](https://github.com/junegunn/vim-plug)
-  * `Plug 'fatih/vim-go'`
+  * `Plug 'fatih/vim-go', { 'do': ':GoUpdateBinaries' }`
 * [Vundle](https://github.com/VundleVim/Vundle.vim)
  * `Plugin 'fatih/vim-go'`
 You will also need to install all the necessary binaries. vim-go makes it easy
 to install all of them by providing a command, `:GoInstallBinaries`, which will
--- a/pack/acp/start/vim-go/autoload/ctrlp/decls.vim
+++ b/pack/acp/start/vim-go/autoload/ctrlp/decls.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 let s:go_decls_var = {
      \  'init':   'ctrlp#decls#init()',
      \  'exit':   'ctrlp#decls#exit()',
@ -20,7 +24,7 @@ function! ctrlp#decls#init() abort
 endfunction
 function! ctrlp#decls#exit() abort
-  unlet! s:decls s:current_dir s:target
+  unlet! s:decls s:target
 endfunction
 " The action to perform on the selected string
@ -32,10 +36,6 @@ function! ctrlp#decls#accept(mode, str) abort
  let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
  let dir = getcwd()
  try
    " we jump to the file directory so we can get the fullpath via fnamemodify
    " below
    execute cd . s:current_dir
    let vals = matchlist(a:str, '|\(.\{-}\):\(\d\+\):\(\d\+\)\s*\(.*\)|')
    " i.e: main.go
@ -50,46 +50,41 @@ function! ctrlp#decls#accept(mode, str) abort
    call ctrlp#acceptfile(a:mode, filepath)
    call cursor(line, col)
    silent! norm! zvzz
  finally
    "jump back to old dir
    execute cd . fnameescape(dir)
  endtry
 endfunction
 function! ctrlp#decls#enter() abort
  let s:current_dir = fnameescape(expand('%:p:h'))
  let s:decls = []
-  let bin_path = go#path#CheckBinPath('motion')
+  let l:cmd = ['motion',
-  if empty(bin_path)
+        \ '-format', 'vim',
-    return
+        \ '-mode', 'decls',
-  endif
+        \ '-include', go#config#DeclsIncludes(),
-  let command = printf("%s -format vim -mode decls", bin_path)
+        \ ]
  let command .= " -include ".  get(g:, "go_decls_includes", "func,type")
  call go#cmd#autowrite()
  if s:mode == 0
    " current file mode
-    let fname = expand("%:p")
+    let l:fname = expand("%:p")
    if exists('s:target')
-      let fname = s:target
+      let l:fname = s:target
    endif
-    let command .= printf(" -file %s", fname)
+    let cmd += ['-file', l:fname]
  else
    " all functions mode
-    let dir = expand("%:p:h")
+    let l:dir = expand("%:p:h")
    if exists('s:target')
-      let dir = s:target
+      let l:dir = s:target
    endif
-    let command .= printf(" -dir %s", dir)
+    let cmd += ['-dir', l:dir]
  endif
-  let out = go#util#System(command)
+  let [l:out, l:err] = go#util#Exec(l:cmd)
-  if go#util#ShellError() != 0
+  if l:err
-    call go#util#EchoError(out)
+    call go#util#EchoError(l:out)
    return
  endif
@ -118,7 +113,7 @@ function! ctrlp#decls#enter() abort
    call add(s:decls, printf("%s\t%s |%s:%s:%s|\t%s",
          \ decl.ident . space,
          \ decl.keyword,
-          \ fnamemodify(decl.filename, ":t"),
+          \ fnamemodify(decl.filename, ":p"),
          \ decl.line,
          \ decl.col,
          \ decl.full,
@ -152,4 +147,8 @@ function! ctrlp#decls#cmd(mode, ...) abort
  return s:id
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/fzf/decls.vim
+++ b/pack/acp/start/vim-go/autoload/fzf/decls.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function! s:code(group, attr) abort
  let code = synIDattr(synIDtrans(hlID(a:group)), a:attr, "cterm")
  if code =~ '^[0-9]\+$'
@ -58,35 +62,34 @@ function! s:source(mode,...) abort
  let s:current_dir = expand('%:p:h')
  let ret_decls = []
-  let bin_path = go#path#CheckBinPath('motion')
+  let l:cmd = ['motion',
-  if empty(bin_path)
+        \ '-format', 'vim',
-    return
+        \ '-mode', 'decls',
-  endif
+        \ '-include', go#config#DeclsIncludes(),
-  let command = printf("%s -format vim -mode decls", bin_path)
+        \ ]
  let command .= " -include ".  get(g:, "go_decls_includes", "func,type")
  call go#cmd#autowrite()
  if a:mode == 0
    " current file mode
-    let fname = expand("%:p")
+    let l:fname = expand("%:p")
    if a:0 && !empty(a:1)
-      let fname = a:1
+      let l:fname = a:1
    endif
-    let command .= printf(" -file %s", shellescape(fname))
+    let cmd += ['-file', l:fname]
  else
    " all functions mode
    if a:0 && !empty(a:1)
      let s:current_dir = a:1
    endif
-    let command .= printf(" -dir %s", shellescape(s:current_dir))
+    let l:cmd += ['-dir', s:current_dir]
  endif
-  let out = go#util#System(command)
+  let [l:out, l:err] = go#util#Exec(l:cmd)
-  if go#util#ShellError() != 0
+  if l:err
-    call go#util#EchoError(out)
+    call go#util#EchoError(l:out)
    return
  endif
@ -147,4 +150,8 @@ function! fzf#decls#cmd(...) abort
        \ }))
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/alternate.vim
+++ b/pack/acp/start/vim-go/autoload/go/alternate.vim
@ -1,7 +1,6 @@
-" By default use edit (current buffer view) to switch
+" don't spam the user when Vim is started in Vi compatibility mode
-if !exists("g:go_alternate_mode")
+let s:cpo_save = &cpo
-  let g:go_alternate_mode = "edit"
+set cpo&vim
 endif
 " Test alternates between the implementation of code and the test code.
 function! go#alternate#Switch(bang, cmd) abort
@ -23,10 +22,14 @@ function! go#alternate#Switch(bang, cmd) abort
    call go#util#EchoError("couldn't find ".alt_file)
    return
  elseif empty(a:cmd)
-    execute ":" . g:go_alternate_mode . " " . alt_file
+    execute ":" . go#config#AlternateMode() . " " . alt_file
  else
    execute ":" . a:cmd . " " . alt_file
  endif
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/asmfmt.vim
+++ b/pack/acp/start/vim-go/autoload/go/asmfmt.vim
@ -15,6 +15,10 @@
 "
 "       Flag to automatically call :Fmt when file is saved.
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 let s:got_fmt_error = 0
 " This is a trimmed-down version of the logic in fmt.vim.
@ -28,42 +32,45 @@ function! go#asmfmt#Format() abort
  call writefile(go#util#GetLines(), l:tmpname)
  " Run asmfmt.
-  let path = go#path#CheckBinPath("asmfmt")
+  let [l:out, l:err] = go#util#Exec(['asmfmt', '-w', l:tmpname])
-  if empty(path)
+  if l:err
    call go#util#EchoError(l:out)
    return
  endif
  let out = go#util#System(path . ' -w ' . l:tmpname)
  " If there's no error, replace the current file with the output.
  if go#util#ShellError() == 0
  " Remove undo point caused by BufWritePre.
  try | silent undojoin | catch | endtry
  " Replace the current file with the temp file; then reload the buffer.
  let old_fileformat = &fileformat
  " save old file permissions
  let original_fperm = getfperm(expand('%'))
  call rename(l:tmpname, expand('%'))
  " restore old file permissions
  call setfperm(expand('%'), original_fperm)
  silent edit!
  let &fileformat = old_fileformat
  let &syntax = &syntax
  endif
  " Restore the cursor/window positions.
  call winrestview(l:curw)
 endfunction
 function! go#asmfmt#ToggleAsmFmtAutoSave() abort
-  if get(g:, "go_asmfmt_autosave", 0)
+  if go#config#AsmfmtAutosave()
-    let g:go_asmfmt_autosave = 1
+    call go#config#SetAsmfmtAutosave(1)
    call go#util#EchoProgress("auto asmfmt enabled")
    return
  end
-  let g:go_asmfmt_autosave = 0
+  call go#config#SetAsmfmtAutosave(0)
  call go#util#EchoProgress("auto asmfmt disabled")
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/auto.vim
+++ b/pack/acp/start/vim-go/autoload/go/auto.vim
@ -0,0 +1,93 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function! go#auto#template_autocreate()
  if !go#config#TemplateAutocreate() || !&modifiable
    return
  endif
  " create new template from scratch
  call go#template#create()
 endfunction
 function! go#auto#echo_go_info()
  if !go#config#EchoGoInfo()
    return
  endif
  if !exists('v:completed_item') || empty(v:completed_item)
    return
  endif
  let item = v:completed_item
  if !has_key(item, "info")
    return
  endif
  if empty(item.info)
    return
  endif
  redraws! | echo "vim-go: " | echohl Function | echon item.info | echohl None
 endfunction
 function! go#auto#auto_type_info()
  if !go#config#AutoTypeInfo() || !filereadable(expand('%:p'))
    return
  endif
  " GoInfo automatic update
  call go#tool#Info(0)
 endfunction
 function! go#auto#auto_sameids()
  if !go#config#AutoSameids() || !filereadable(expand('%:p'))
    return
  endif
  " GoSameId automatic update
  call go#guru#SameIds(0)
 endfunction
 function! go#auto#fmt_autosave()
  if !go#config#FmtAutosave() || !filereadable(expand('%:p'))
    return
  endif
  " Go code formatting on save
  call go#fmt#Format(-1)
 endfunction
 function! go#auto#metalinter_autosave()
  if !go#config#MetalinterAutosave() || !filereadable(expand('%:p'))
    return
  endif
  " run gometalinter on save
  call go#lint#Gometa(!g:go_jump_to_error, 1)
 endfunction
 function! go#auto#modfmt_autosave()
  if !go#config#ModFmtAutosave() || !filereadable(expand('%:p'))
    return
  endif
  " go.mod code formatting on save
  call go#mod#Format()
 endfunction
 function! go#auto#asmfmt_autosave()
  if !go#config#AsmfmtAutosave() || !filereadable(expand('%:p'))
    return
  endif
  " Go asm formatting on save
  call go#asmfmt#Format()
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/cmd.vim
+++ b/pack/acp/start/vim-go/autoload/go/cmd.vim
@ -1,6 +1,21 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function! go#cmd#autowrite() abort
  if &autowrite == 1 || &autowriteall == 1
    silent! wall
  else
    for l:nr in range(0, bufnr('$'))
      if buflisted(l:nr) && getbufvar(l:nr, '&modified')
        " Sleep one second to make sure people see the message. Otherwise it is
        " often immediacy overwritten by the async messages (which also don't
        " invoke the "hit ENTER" prompt).
        call go#util#EchoWarning('[No write since last change]')
        sleep 1
        return
      endif
    endfor
  endif
 endfunction
@ -11,34 +26,21 @@ endfunction
 function! go#cmd#Build(bang, ...) abort
  " Create our command arguments. go build discards any results when it
  " compiles multiple packages. So we pass the `errors` package just as an
-  " placeholder with the current folder (indicated with '.'). We also pass -i
+  " placeholder with the current folder (indicated with '.').
-  " that tries to install the dependencies, this has the side effect that it
+  let l:args =
-  " caches the build results, so every other build is faster.
+        \ ['build', '-tags', go#config#BuildTags()] +
  let args =
        \ ["build"] +
        \ map(copy(a:000), "expand(v:val)") +
        \ [".", "errors"]
-  " Vim async.
+  " Vim and Neovim async.
  if go#util#has_job()
    if get(g:, 'go_echo_command_info', 1)
      call go#util#EchoProgress("building dispatched ...")
    endif
    call s:cmd_job({
          \ 'cmd': ['go'] + args,
          \ 'bang': a:bang,
          \ 'for': 'GoBuild',
          \ 'statustype': 'build'
          \})
  " Nvim async.
  elseif has('nvim')
    if get(g:, 'go_echo_command_info', 1)
      call go#util#EchoProgress("building dispatched ...")
    endif
    call go#jobcontrol#Spawn(a:bang, "build", "GoBuild", args)
  " Vim 7.4 without async
  else
    let default_makeprg = &makeprg
@ -59,6 +61,7 @@ function! go#cmd#Build(bang, ...) abort
      redraw!
    finally
      execute cd . fnameescape(dir)
      let &makeprg = default_makeprg
    endtry
    let errors = go#list#Get(l:listtype)
@ -68,8 +71,6 @@ function! go#cmd#Build(bang, ...) abort
    else
      call go#util#EchoSuccess("[build] SUCCESS")
    endif
    let &makeprg = default_makeprg
  endif
 endfunction
@ -77,33 +78,44 @@ endfunction
 " BuildTags sets or shows the current build tags used for tools
 function! go#cmd#BuildTags(bang, ...) abort
  if a:0
-    if a:0 == 1 && a:1 == '""'
+    let v = a:1
-      unlet g:go_build_tags
+    if v == '""' || v == "''"
      let v = ""
    endif
    call go#config#SetBuildTags(v)
    let tags = go#config#BuildTags()
    if empty(tags)
      call go#util#EchoSuccess("build tags are cleared")
    else
-      let g:go_build_tags = a:1
+      call go#util#EchoSuccess("build tags are changed to: " . tags)
      call go#util#EchoSuccess("build tags are changed to: ". a:1)
    endif
    return
  endif
-  if !exists('g:go_build_tags')
+  let tags = go#config#BuildTags()
  if empty(tags)
    call go#util#EchoSuccess("build tags are not set")
  else
-    call go#util#EchoSuccess("current build tags: ". g:go_build_tags)
+    call go#util#EchoSuccess("current build tags: " . tags)
  endif
 endfunction
 " Run runs the current file (and their dependencies if any) in a new terminal.
 function! go#cmd#RunTerm(bang, mode, files) abort
-  if empty(a:files)
+  let cmd = "go run "
-    let cmd = "go run ".  go#util#Shelljoin(go#tool#Files())
+  let tags = go#config#BuildTags()
-  else
+  if len(tags) > 0
-    let cmd = "go run ".  go#util#Shelljoin(map(copy(a:files), "expand(v:val)"), 1)
+    let cmd .= "-tags " . go#util#Shellescape(tags) . " "
  endif
-  call go#term#newmode(a:bang, cmd, a:mode)
+
  if empty(a:files)
    let cmd .= go#util#Shelljoin(go#tool#Files())
  else
    let cmd .= go#util#Shelljoin(map(copy(a:files), "expand(v:val)"), 1)
  endif
  call go#term#newmode(a:bang, cmd, s:runerrorformat(), a:mode)
 endfunction
 " Run runs the current file (and their dependencies if any) and outputs it.
@ -122,8 +134,19 @@ function! go#cmd#Run(bang, ...) abort
    " anything. Once this is implemented we're going to make :GoRun async
  endif
  let cmd = "go run "
  let tags = go#config#BuildTags()
  if len(tags) > 0
    let cmd .= "-tags " . go#util#Shellescape(tags) . " "
  endif
  if go#util#IsWin()
-    exec '!go run ' . go#util#Shelljoin(go#tool#Files())
+    if a:0 == 0
      exec '!' . cmd . go#util#Shelljoin(go#tool#Files(), 1)
    else
      exec '!' . cmd . go#util#Shelljoin(map(copy(a:000), "expand(v:val)"), 1)
    endif
    if v:shell_error
      redraws! | echon "vim-go: [run] " | echohl ErrorMsg | echon "FAILED"| echohl None
    else
@ -136,29 +159,36 @@ function! go#cmd#Run(bang, ...) abort
  " :make expands '%' and '#' wildcards, so they must also be escaped
  let default_makeprg = &makeprg
  if a:0 == 0
-    let &makeprg = 'go run ' . go#util#Shelljoin(go#tool#Files(), 1)
+    let &makeprg = cmd . go#util#Shelljoin(go#tool#Files(), 1)
  else
-    let &makeprg = "go run " . go#util#Shelljoin(map(copy(a:000), "expand(v:val)"), 1)
+    let &makeprg = cmd . go#util#Shelljoin(map(copy(a:000), "expand(v:val)"), 1)
  endif
  let l:listtype = go#list#Type("GoRun")
  try
    " backup user's errorformat, will be restored once we are finished
    let l:old_errorformat = &errorformat
    let &errorformat = s:runerrorformat()
    if l:listtype == "locationlist"
      exe 'lmake!'
    else
      exe 'make!'
    endif
  finally
    "restore errorformat
    let &errorformat = l:old_errorformat
    let &makeprg = default_makeprg
  endtry
-  let items = go#list#Get(l:listtype)
+  let l:errors = go#list#Get(l:listtype)
  let errors = go#tool#FilterValids(items)
-  call go#list#Populate(l:listtype, errors, &makeprg)
+  call go#list#Window(l:listtype, len(l:errors))
-  call go#list#Window(l:listtype, len(errors))
+  if !empty(l:errors) && !a:bang
  if !empty(errors) && !a:bang
    call go#list#JumpToFirst(l:listtype)
  endif
  let &makeprg = default_makeprg
 endfunction
 " Install installs the package by simple calling 'go install'. If any argument
@ -170,14 +200,11 @@ function! go#cmd#Install(bang, ...) abort
    " expand all wildcards(i.e: '%' to the current file name)
    let goargs = map(copy(a:000), "expand(v:val)")
    if get(g:, 'go_echo_command_info', 1)
      call go#util#EchoProgress("installing dispatched ...")
    endif
    call s:cmd_job({
-          \ 'cmd': ['go', 'install'] + goargs,
+          \ 'cmd': ['go', 'install', '-tags', go#config#BuildTags()] + goargs,
          \ 'bang': a:bang,
          \ 'for': 'GoInstall',
          \ 'statustype': 'install'
          \})
    return
  endif
@ -203,6 +230,7 @@ function! go#cmd#Install(bang, ...) abort
    redraw!
  finally
    execute cd . fnameescape(dir)
    let &makeprg = default_makeprg
  endtry
  let errors = go#list#Get(l:listtype)
@ -212,8 +240,6 @@ function! go#cmd#Install(bang, ...) abort
  else
    call go#util#EchoSuccess("installed to ". go#path#Default())
  endif
  let &makeprg = default_makeprg
 endfunction
 " Generate runs 'go generate' in similar fashion to go#cmd#Build()
@ -232,12 +258,17 @@ function! go#cmd#Generate(bang, ...) abort
  let l:listtype = go#list#Type("GoGenerate")
  echon "vim-go: " | echohl Identifier | echon "generating ..."| echohl None
  try
    if l:listtype == "locationlist"
      silent! exe 'lmake!'
    else
      silent! exe 'make!'
    endif
  finally
    redraw!
    let &makeprg = default_makeprg
  endtry
  let errors = go#list#Get(l:listtype)
  call go#list#Window(l:listtype, len(errors))
@ -249,64 +280,27 @@ function! go#cmd#Generate(bang, ...) abort
    redraws! | echon "vim-go: " | echohl Function | echon "[generate] SUCCESS"| echohl None
  endif
-  let &makeprg = default_makeprg
+endfunction
 function! s:runerrorformat()
  let l:panicaddress = "%\\t%#%f:%l +0x%[0-9A-Fa-f]%\\+"
  let l:errorformat = '%A' . l:panicaddress . "," . &errorformat
  return l:errorformat
 endfunction
 " ---------------------
 " | Vim job callbacks |
 " ---------------------
-function s:cmd_job(args) abort
+function! s:cmd_job(args) abort
  let status_dir = expand('%:p:h')
  let started_at = reltime()
  call go#statusline#Update(status_dir, {
        \ 'desc': "current status",
        \ 'type': a:args.cmd[1],
        \ 'state': "started",
        \})
  " autowrite is not enabled for jobs
  call go#cmd#autowrite()
-  function! s:complete(job, exit_status, data) closure abort
+  call go#job#Spawn(a:args.cmd, a:args)
    let status = {
          \ 'desc': 'last status',
          \ 'type': a:args.cmd[1],
          \ 'state': "success",
          \ }
    if a:exit_status
      let status.state = "failed"
    endif
    let elapsed_time = reltimestr(reltime(started_at))
    " strip whitespace
    let elapsed_time = substitute(elapsed_time, '^\s*\(.\{-}\)\s*$', '\1', '')
    let status.state .= printf(" (%ss)", elapsed_time)
    call go#statusline#Update(status_dir, status)
 endfunction
-  let a:args.complete = funcref('s:complete')
+" restore Vi compatibility settings
-  let callbacks = go#job#Spawn(a:args)
+let &cpo = s:cpo_save
-
+unlet s:cpo_save
  let start_options = {
        \ 'callback': callbacks.callback,
        \ 'exit_cb': callbacks.exit_cb,
        \ 'close_cb': callbacks.close_cb,
        \ }
  " pre start
  let dir = getcwd()
  let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
  let jobdir = fnameescape(expand("%:p:h"))
  execute cd . jobdir
  call job_start(a:args.cmd, start_options)
  " post start
  execute cd . fnameescape(dir)
 endfunction
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/cmd_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/cmd_test.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! Test_GoBuildErrors()
  try
    let l:filename = 'cmd/bad.go'
@ -27,4 +31,8 @@ func! Test_GoBuildErrors()
  endtry
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/complete.vim
+++ b/pack/acp/start/vim-go/autoload/go/complete.vim
@ -1,16 +1,39 @@
-let s:sock_type = (has('win32') || has('win64')) ? 'tcp' : 'unix'
+" don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function! s:gocodeCommand(cmd, args) abort
-  let bin_path = go#path#CheckBinPath("gocode")
+  let l:gocode_bin = "gocode"
  let l:gomod = go#util#gomod()
  if filereadable(l:gomod)
    let l:gocode_bin = "gocode-gomod"
  endif
  let bin_path = go#path#CheckBinPath(l:gocode_bin)
  if empty(bin_path)
    return []
  endif
-  let socket_type = get(g:, 'go_gocode_socket_type', s:sock_type)
+  let socket_type = go#config#GocodeSocketType()
  let cmd = [bin_path]
  let cmd = extend(cmd, ['-sock', socket_type])
  let cmd = extend(cmd, ['-f', 'vim'])
  if go#config#GocodeProposeBuiltins()
    let cmd = extend(cmd, ['-builtin'])
  endif
  if go#config#GocodeProposeSource()
    let cmd = extend(cmd, ['-source'])
  else
    let cmd = extend(cmd, ['-fallback-to-source', '-cache'])
  endif
  if go#config#GocodeUnimportedPackages()
    let cmd = extend(cmd, ['-unimported-packages'])
  endif
  let cmd = extend(cmd, [a:cmd])
  let cmd = extend(cmd, a:args)
@ -45,32 +68,7 @@ function! s:sync_gocode(cmd, args, input) abort
  return l:result
 endfunction
 " TODO(bc): reset when gocode isn't running
 let s:optionsEnabled = 0
 function! s:gocodeEnableOptions() abort
  if s:optionsEnabled
    return
  endif
  let bin_path = go#path#CheckBinPath("gocode")
  if empty(bin_path)
    return
  endif
  let s:optionsEnabled = 1
  call go#util#System(printf('%s set propose-builtins %s', go#util#Shellescape(bin_path), s:toBool(get(g:, 'go_gocode_propose_builtins', 1))))
  call go#util#System(printf('%s set autobuild %s', go#util#Shellescape(bin_path), s:toBool(get(g:, 'go_gocode_autobuild', 1))))
  call go#util#System(printf('%s set unimported-packages %s', go#util#Shellescape(bin_path), s:toBool(get(g:, 'go_gocode_unimported_packages', 0))))
 endfunction
 function! s:toBool(val) abort
  if a:val | return 'true ' | else | return 'false' | endif
 endfunction
 function! s:gocodeAutocomplete() abort
  call s:gocodeEnableOptions()
  " use the offset as is, because the cursor position is the position for
  " which autocomplete candidates are needed.
  return s:sync_gocode('autocomplete',
@ -84,60 +82,20 @@ function! go#complete#GetInfo() abort
  return s:sync_info(0)
 endfunction
-function! go#complete#Info(auto) abort
+function! go#complete#Info(showstatus) abort
-  if go#util#has_job()
+  if go#util#has_job(1)
-    return s:async_info(a:auto)
+    return s:async_info(1, a:showstatus)
  else
-    return s:sync_info(a:auto)
+    return s:sync_info(1)
  endif
 endfunction
-function! s:async_info(auto)
+function! s:async_info(echo, showstatus)
-  if exists("s:async_info_job")
+  let state = {'echo': a:echo}
    call job_stop(s:async_info_job)
    unlet s:async_info_job
  endif
-  let state = {
+  " explicitly bind complete to state so that within it, self will
-        \ 'exited': 0,
+  " always refer to state. See :help Partial for more information.
-        \ 'exit_status': 0,
+  let state.complete = function('s:complete', [], state)
        \ 'closed': 0,
        \ 'messages': [],
        \ 'auto': a:auto
      \ }
  function! s:callback(chan, msg) dict
    let l:msg = a:msg
    if &encoding != 'utf-8'
      let l:msg = iconv(l:msg, 'utf-8', &encoding)
    endif
    call add(self.messages, l:msg)
  endfunction
  function! s:exit_cb(job, exitval) dict
    let self.exit_status = a:exitval
    let self.exited = 1
    if self.closed
      call self.complete()
    endif
  endfunction
  function! s:close_cb(ch) dict
    let self.closed = 1
    if self.exited
      call self.complete()
    endif
  endfunction
  function state.complete() dict
    if self.exit_status != 0
      return
    endif
    let result = s:info_filter(self.auto, join(self.messages, "\n"))
    call s:info_complete(self.auto, result)
  endfunction
  " add 1 to the offset, so that the position at the cursor will be included
  " in gocode's search
@ -149,23 +107,49 @@ function! s:async_info(auto)
    \ "GOROOT": go#util#env("goroot")
    \ }
  let opts = {
        \ 'bang': 1,
        \ 'complete': state.complete,
        \ 'for': '_',
        \ }
  if a:showstatus
    let opts.statustype = 'gocode'
  endif
  let opts = go#job#Options(l:opts)
  let cmd = s:gocodeCommand('autocomplete',
        \ [expand('%:p'), offset])
-  " TODO(bc): Don't write the buffer to a file; pass the buffer directrly to
+  " TODO(bc): Don't write the buffer to a file; pass the buffer directly to
  " gocode's stdin. It shouldn't be necessary to use {in_io: 'file', in_name:
  " s:gocodeFile()}, but unfortunately {in_io: 'buffer', in_buf: bufnr('%')}
-  " should work.
+  " doesn't work.
-  let options = {
+  call extend(opts, {
        \ 'env': env,
        \ 'in_io': 'file',
        \ 'in_name': s:gocodeFile(),
-        \ 'callback': funcref("s:callback", [], state),
+        \ })
        \ 'exit_cb': funcref("s:exit_cb", [], state),
        \ 'close_cb': funcref("s:close_cb", [], state)
      \ }
-  let s:async_info_job = job_start(cmd, options)
+  call go#job#Start(cmd, opts)
 endfunction
 function! s:complete(job, exit_status, messages) abort dict
  if a:exit_status != 0
    return
  endif
  if &encoding != 'utf-8'
    let i = 0
    while i < len(a:messages)
      let a:messages[i] = iconv(a:messages[i], 'utf-8', &encoding)
      let i += 1
    endwhile
  endif
  let result = s:info_filter(self.echo, join(a:messages, "\n"))
  call s:info_complete(self.echo, result)
 endfunction
 function! s:gocodeFile()
@ -174,9 +158,7 @@ function! s:gocodeFile()
  return file
 endfunction
-function! s:sync_info(auto)
+function! s:sync_info(echo)
  " auto is true if we were called by g:go_auto_type_info's autocmd
  " add 1 to the offset, so that the position at the cursor will be included
  " in gocode's search
  let offset = go#util#OffsetCursor()+1
@ -185,11 +167,11 @@ function! s:sync_info(auto)
        \ [expand('%:p'), offset],
        \ go#util#GetLines())
-  let result = s:info_filter(a:auto, result)
+  let result = s:info_filter(a:echo, result)
-  call s:info_complete(a:auto, result)
+  return s:info_complete(a:echo, result)
 endfunction
-function! s:info_filter(auto, result) abort
+function! s:info_filter(echo, result) abort
  if empty(a:result)
    return ""
  endif
@ -203,7 +185,7 @@ function! s:info_filter(auto, result) abort
  if len(l:candidates) == 1
    " When gocode panics in vim mode, it returns
    "     [0, [{'word': 'PANIC', 'abbr': 'PANIC PANIC PANIC', 'info': 'PANIC PANIC PANIC'}]]
-    if a:auto && l:candidates[0].info ==# "PANIC PANIC PANIC"
+    if a:echo && l:candidates[0].info ==# "PANIC PANIC PANIC"
      return ""
    endif
@ -216,17 +198,21 @@ function! s:info_filter(auto, result) abort
  let wordMatch = substitute(wordMatch, "'", "''", "g")
  let filtered = filter(l:candidates, "v:val.info =~ '".wordMatch."'")
-  if len(l:filtered) != 1
+  if len(l:filtered) == 0
-    return ""
+    return "no matches"
  elseif len(l:filtered) > 1
    return "ambiguous match"
  endif
  return l:filtered[0].info
 endfunction
-function! s:info_complete(auto, result) abort
+function! s:info_complete(echo, result) abort
-  if !empty(a:result)
+  if a:echo
-    echo "vim-go: " | echohl Function | echon a:result | echohl None
+    call go#util#ShowInfo(a:result)
  endif
  return a:result
 endfunction
 function! s:trim_bracket(val) abort
@ -234,12 +220,22 @@ function! s:trim_bracket(val) abort
  return a:val
 endfunction
-let s:completions = ""
+let s:completions = []
-function! go#complete#Complete(findstart, base) abort
+
 function! go#complete#GocodeComplete(findstart, base) abort
  "findstart = 1 when we need to get the text length
  if a:findstart == 1
-    execute "silent let s:completions = " . s:gocodeAutocomplete()
+    let l:completions = []
-    return col('.') - s:completions[0] - 1
+    execute "silent let l:completions = " . s:gocodeAutocomplete()
    if len(l:completions) == 0 || len(l:completions) >= 2 && len(l:completions[1]) == 0
      " no matches. cancel and leave completion mode.
      call go#util#EchoInfo("no matches")
      return -3
    endif
    let s:completions = l:completions[1]
    return col('.') - l:completions[0] - 1
    "findstart = 0 when we need to return the list of completions
  else
    let s = getline(".")[col('.') - 1]
@ -251,15 +247,49 @@ function! go#complete#Complete(findstart, base) abort
  endif
 endfunction
 function! go#complete#Complete(findstart, base) abort
  let l:state = {'done': 0, 'matches': []}
  function! s:handler(state, matches) abort dict
    let a:state.matches = a:matches
    let a:state.done = 1
  endfunction
  "findstart = 1 when we need to get the start of the match
  if a:findstart == 1
    call go#lsp#Completion(expand('%:p'), line('.'), col('.'), funcref('s:handler', [l:state]))
    while !l:state.done
      sleep 10m
    endwhile
    let s:completions = l:state.matches
    if len(l:state.matches) == 0
      " no matches. cancel and leave completion mode.
      call go#util#EchoInfo("no matches")
      return -3
    endif
    return col('.')
  else "findstart = 0 when we need to return the list of completions
    return s:completions
  endif
 endfunction
 function! go#complete#ToggleAutoTypeInfo() abort
-  if get(g:, "go_auto_type_info", 0)
+  if go#config#AutoTypeInfo()
-    let g:go_auto_type_info = 0
+    call go#config#SetAutoTypeInfo(0)
    call go#util#EchoProgress("auto type info disabled")
    return
  end
-  let g:go_auto_type_info = 1
+  call go#config#SetAutoTypeInfo(1)
  call go#util#EchoProgress("auto type info enabled")
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/complete_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/complete_test.vim
@ -0,0 +1,28 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! Test_GetInfo()
    let l:filename = 'complete/complete.go'
    let l:tmp = gotest#load_fixture(l:filename)
    call cursor(8, 3)
    let g:go_info_mode = 'gocode'
    let expected = 'func Example(s string)'
    let actual = go#complete#GetInfo()
    call assert_equal(expected, actual)
    let g:go_info_mode = 'guru'
    call go#config#InfoMode()
    let actual = go#complete#GetInfo()
    call assert_equal(expected, actual)
    unlet g:go_info_mode
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/config.vim
+++ b/pack/acp/start/vim-go/autoload/go/config.vim
@ -0,0 +1,479 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function! go#config#AutodetectGopath() abort
 	return get(g:, 'go_autodetect_gopath', 0)
 endfunction
 function! go#config#ListTypeCommands() abort
  return get(g:, 'go_list_type_commands', {})
 endfunction
 function! go#config#VersionWarning() abort
  return get(g:, 'go_version_warning', 1)
 endfunction
 function! go#config#BuildTags() abort
  return get(g:, 'go_build_tags', '')
 endfunction
 function! go#config#SetBuildTags(value) abort
  if a:value is ''
    silent! unlet g:go_build_tags
    return
  endif
  let g:go_build_tags = a:value
 endfunction
 function! go#config#TestTimeout() abort
 return get(g:, 'go_test_timeout', '10s')
 endfunction
 function! go#config#TestShowName() abort
  return get(g:, 'go_test_show_name', 0)
 endfunction
 function! go#config#TermHeight() abort
  return get(g:, 'go_term_height', winheight(0))
 endfunction
 function! go#config#TermWidth() abort
  return get(g:, 'go_term_width', winwidth(0))
 endfunction
 function! go#config#TermMode() abort
  return get(g:, 'go_term_mode', 'vsplit')
 endfunction
 function! go#config#TermEnabled() abort
  return has('nvim') && get(g:, 'go_term_enabled', 0)
 endfunction
 function! go#config#SetTermEnabled(value) abort
  let g:go_term_enabled = a:value
 endfunction
 function! go#config#TemplateUsePkg() abort
  return get(g:, 'go_template_use_pkg', 0)
 endfunction
 function! go#config#TemplateTestFile() abort
  return get(g:, 'go_template_test_file', "hello_world_test.go")
 endfunction
 function! go#config#TemplateFile() abort
  return get(g:, 'go_template_file', "hello_world.go")
 endfunction
 function! go#config#StatuslineDuration() abort
  return get(g:, 'go_statusline_duration', 60000)
 endfunction
 function! go#config#SnippetEngine() abort
  return get(g:, 'go_snippet_engine', 'automatic')
 endfunction
 function! go#config#PlayBrowserCommand() abort
    if go#util#IsWin()
        let go_play_browser_command = '!start rundll32 url.dll,FileProtocolHandler %URL%'
    elseif go#util#IsMac()
        let go_play_browser_command = 'open %URL%'
    elseif executable('xdg-open')
        let go_play_browser_command = 'xdg-open %URL%'
    elseif executable('firefox')
        let go_play_browser_command = 'firefox %URL% &'
    elseif executable('chromium')
        let go_play_browser_command = 'chromium %URL% &'
    else
        let go_play_browser_command = ''
    endif
    return get(g:, 'go_play_browser_command', go_play_browser_command)
 endfunction
 function! go#config#MetalinterDeadline() abort
  " gometalinter has a default deadline of 5 seconds only when asynchronous
  " jobs are not supported.
  let deadline = '5s'
  if go#util#has_job() && has('lambda')
    let deadline = ''
  endif
  return get(g:, 'go_metalinter_deadline', deadline)
 endfunction
 function! go#config#ListType() abort
  return get(g:, 'go_list_type', '')
 endfunction
 function! go#config#ListAutoclose() abort
  return get(g:, 'go_list_autoclose', 1)
 endfunction
 function! go#config#InfoMode() abort
  return get(g:, 'go_info_mode', 'gocode')
 endfunction
 function! go#config#GuruScope() abort
  let scope = get(g:, 'go_guru_scope', [])
  if !empty(scope)
    " strip trailing slashes for each path in scope. bug:
    " https://github.com/golang/go/issues/14584
    let scopes = go#util#StripTrailingSlash(scope)
  endif
  return scope
 endfunction
 function! go#config#SetGuruScope(scope) abort
  if empty(a:scope)
    if exists('g:go_guru_scope')
      unlet g:go_guru_scope
    endif
  else
    let g:go_guru_scope = a:scope
  endif
 endfunction
 function! go#config#GocodeUnimportedPackages() abort
  return get(g:, 'go_gocode_unimported_packages', 0)
 endfunction
 let s:sock_type = (has('win32') || has('win64')) ? 'tcp' : 'unix'
 function! go#config#GocodeSocketType() abort
  return get(g:, 'go_gocode_socket_type', s:sock_type)
 endfunction
 function! go#config#GocodeProposeBuiltins() abort
  return get(g:, 'go_gocode_propose_builtins', 1)
 endfunction
 function! go#config#GocodeProposeSource() abort
  return get(g:, 'go_gocode_propose_source', 0)
 endfunction
 function! go#config#EchoCommandInfo() abort
  return get(g:, 'go_echo_command_info', 1)
 endfunction
 function! go#config#DocUrl() abort
  let godoc_url = get(g:, 'go_doc_url', 'https://godoc.org')
  if godoc_url isnot 'https://godoc.org'
    " strip last '/' character if available
    let last_char = strlen(godoc_url) - 1
    if godoc_url[last_char] == '/'
      let godoc_url = strpart(godoc_url, 0, last_char)
    endif
    " custom godoc installations expect /pkg before package names
    let godoc_url .= "/pkg"
  endif
  return godoc_url
 endfunction
 function! go#config#DefReuseBuffer() abort
  return get(g:, 'go_def_reuse_buffer', 0)
 endfunction
 function! go#config#DefMode() abort
  return get(g:, 'go_def_mode', 'guru')
 endfunction
 function! go#config#DeclsIncludes() abort
  return get(g:, 'go_decls_includes', 'func,type')
 endfunction
 function! go#config#Debug() abort
  return get(g:, 'go_debug', [])
 endfunction
 function! go#config#DebugWindows() abort
  return get(g:, 'go_debug_windows', {
            \ 'stack': 'leftabove 20vnew',
            \ 'out':   'botright 10new',
            \ 'vars':  'leftabove 30vnew',
            \ }
         \ )
 endfunction
 function! go#config#DebugAddress() abort
  return get(g:, 'go_debug_address', '127.0.0.1:8181')
 endfunction
 function! go#config#DebugCommands() abort
  " make sure g:go_debug_commands is set so that it can be added to easily.
  let g:go_debug_commands = get(g:, 'go_debug_commands', [])
  return g:go_debug_commands
 endfunction
 function! go#config#DebugLogOutput() abort
  return get(g:, 'go_debug_log_output', 'debugger, rpc')
 endfunction
 function! go#config#LspLog() abort
  " make sure g:go_lsp_log is set so that it can be added to easily.
  let g:go_lsp_log = get(g:, 'go_lsp_log', [])
  return g:go_lsp_log
 endfunction
 function! go#config#SetDebugDiag(value) abort
  let g:go_debug_diag = a:value
 endfunction
 function! go#config#AutoSameids() abort
    return get(g:, 'go_auto_sameids', 0)
 endfunction
 function! go#config#SetAutoSameids(value) abort
  let g:go_auto_sameids = a:value
 endfunction
 function! go#config#AddtagsTransform() abort
  return get(g:, 'go_addtags_transform', "snakecase")
 endfunction
 function! go#config#TemplateAutocreate() abort
  return get(g:, "go_template_autocreate", 1)
 endfunction
 function! go#config#SetTemplateAutocreate(value) abort
  let g:go_template_autocreate = a:value
 endfunction
 function! go#config#MetalinterCommand() abort
  return get(g:, "go_metalinter_command", "gometalinter")
 endfunction
 function! go#config#MetalinterAutosaveEnabled() abort
  let l:default_enabled = ["vet", "golint"]
  if go#config#MetalinterCommand() == "golangci-lint"
    let l:default_enabled = ["govet", "golint"]
  endif
  return get(g:, "go_metalinter_autosave_enabled", default_enabled)
 endfunction
 function! go#config#MetalinterEnabled() abort
  let l:default_enabled = ["vet", "golint", "errcheck"]
  if go#config#MetalinterCommand() == "golangci-lint"
    let l:default_enabled = ["govet", "golint"]
  endif
  return get(g:, "go_metalinter_enabled", default_enabled)
 endfunction
 function! go#config#MetalinterDisabled() abort
  return get(g:, "go_metalinter_disabled", [])
 endfunction
 function! go#config#GolintBin() abort
  return get(g:, "go_golint_bin", "golint")
 endfunction
 function! go#config#ErrcheckBin() abort
  return get(g:, "go_errcheck_bin", "errcheck")
 endfunction
 function! go#config#MetalinterAutosave() abort
  return get(g:, "go_metalinter_autosave", 0)
 endfunction
 function! go#config#SetMetalinterAutosave(value) abort
  let g:go_metalinter_autosave = a:value
 endfunction
 function! go#config#ListHeight() abort
  return get(g:, "go_list_height", 0)
 endfunction
 function! go#config#FmtAutosave() abort
 	return get(g:, "go_fmt_autosave", 1)
 endfunction
 function! go#config#SetFmtAutosave(value) abort
  let g:go_fmt_autosave = a:value
 endfunction
 function! go#config#AsmfmtAutosave() abort
  return get(g:, "go_asmfmt_autosave", 0)
 endfunction
 function! go#config#SetAsmfmtAutosave(value) abort
  let g:go_asmfmt_autosave = a:value
 endfunction
 function! go#config#ModFmtAutosave() abort
 	return get(g:, "go_mod_fmt_autosave", 1)
 endfunction
 function! go#config#SetModFmtAutosave(value) abort
  let g:go_mod_fmt_autosave = a:value
 endfunction
 function! go#config#DocMaxHeight() abort
  return get(g:, "go_doc_max_height", 20)
 endfunction
 function! go#config#AutoTypeInfo() abort
  return get(g:, "go_auto_type_info", 0)
 endfunction
 function! go#config#SetAutoTypeInfo(value) abort
  let g:go_auto_type_info = a:value
 endfunction
 function! go#config#AlternateMode() abort
  return get(g:, "go_alternate_mode", "edit")
 endfunction
 function! go#config#DeclsMode() abort
  return get(g:, "go_decls_mode", "")
 endfunction
 function! go#config#FmtCommand() abort
  return get(g:, "go_fmt_command", "gofmt")
 endfunction
 function! go#config#FmtOptions() abort
  return get(g:, "go_fmt_options", {})
 endfunction
 function! go#config#FmtFailSilently() abort
  return get(g:, "go_fmt_fail_silently", 0)
 endfunction
 function! go#config#FmtExperimental() abort
  return get(g:, "go_fmt_experimental", 0 )
 endfunction
 function! go#config#PlayOpenBrowser() abort
  return get(g:, "go_play_open_browser", 1)
 endfunction
 function! go#config#GorenameBin() abort
  return get(g:, "go_gorename_bin", "gorename")
 endfunction
 function! go#config#GorenamePrefill() abort
  return get(g:, "go_gorename_prefill", 'expand("<cword>") =~# "^[A-Z]"' .
          \ '? go#util#pascalcase(expand("<cword>"))' .
          \ ': go#util#camelcase(expand("<cword>"))')
 endfunction
 function! go#config#TextobjIncludeFunctionDoc() abort
  return get(g:, "go_textobj_include_function_doc", 1)
 endfunction
 function! go#config#TextobjIncludeVariable() abort
  return get(g:, "go_textobj_include_variable", 1)
 endfunction
 function! go#config#BinPath() abort
  return get(g:, "go_bin_path", "")
 endfunction
 function! go#config#SearchBinPathFirst() abort
  return get(g:, 'go_search_bin_path_first', 1)
 endfunction
 function! go#config#HighlightArrayWhitespaceError() abort
  return get(g:, 'go_highlight_array_whitespace_error', 0)
 endfunction
 function! go#config#HighlightChanWhitespaceError() abort
  return get(g:, 'go_highlight_chan_whitespace_error', 0)
 endfunction
 function! go#config#HighlightExtraTypes() abort
  return get(g:, 'go_highlight_extra_types', 0)
 endfunction
 function! go#config#HighlightSpaceTabError() abort
  return get(g:, 'go_highlight_space_tab_error', 0)
 endfunction
 function! go#config#HighlightTrailingWhitespaceError() abort
  return get(g:, 'go_highlight_trailing_whitespace_error', 0)
 endfunction
 function! go#config#HighlightOperators() abort
  return get(g:, 'go_highlight_operators', 0)
 endfunction
 function! go#config#HighlightFunctions() abort
  return get(g:, 'go_highlight_functions', 0)
 endfunction
 function! go#config#HighlightFunctionParameters() abort
  " fallback to highlight_function_arguments for backwards compatibility
  return get(g:, 'go_highlight_function_parameters', get(g:, 'go_highlight_function_arguments', 0))
 endfunction
 function! go#config#HighlightFunctionCalls() abort
  return get(g:, 'go_highlight_function_calls', 0)
 endfunction
 function! go#config#HighlightFields() abort
  return get(g:, 'go_highlight_fields', 0)
 endfunction
 function! go#config#HighlightTypes() abort
  return get(g:, 'go_highlight_types', 0)
 endfunction
 function! go#config#HighlightBuildConstraints() abort
  return get(g:, 'go_highlight_build_constraints', 0)
 endfunction
 function! go#config#HighlightStringSpellcheck() abort
  return get(g:, 'go_highlight_string_spellcheck', 1)
 endfunction
 function! go#config#HighlightFormatStrings() abort
  return get(g:, 'go_highlight_format_strings', 1)
 endfunction
 function! go#config#HighlightGenerateTags() abort
  return get(g:, 'go_highlight_generate_tags', 0)
 endfunction
 function! go#config#HighlightVariableAssignments() abort
  return get(g:, 'go_highlight_variable_assignments', 0)
 endfunction
 function! go#config#HighlightVariableDeclarations() abort
  return get(g:, 'go_highlight_variable_declarations', 0)
 endfunction
 function! go#config#HighlightDebug() abort
  return get(g:, 'go_highlight_debug', 1)
 endfunction
 function! go#config#FoldEnable(...) abort
  if a:0 > 0
    return index(go#config#FoldEnable(), a:1) > -1
  endif
  return get(g:, 'go_fold_enable', ['block', 'import', 'varconst', 'package_comment'])
 endfunction
 function! go#config#EchoGoInfo() abort
  return get(g:, "go_echo_go_info", 1)
 endfunction
 " Set the default value. A value of "1" is a shortcut for this, for
 " compatibility reasons.
 if exists("g:go_gorename_prefill") && g:go_gorename_prefill == 1
  unlet g:go_gorename_prefill
 endif
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/coverage.vim
+++ b/pack/acp/start/vim-go/autoload/go/coverage.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 let s:toggle = 0
 " Buffer creates a new cover profile with 'go test -coverprofile' and changes
@ -44,43 +48,28 @@ function! go#coverage#Buffer(bang, ...) abort
  let s:toggle = 1
  let l:tmpname = tempname()
  if get(g:, 'go_echo_command_info', 1)
    call go#util#EchoProgress("testing...")
  endif
  if go#util#has_job()
    call s:coverage_job({
-          \ 'cmd': ['go', 'test', '-coverprofile', l:tmpname] + a:000,
+          \ 'cmd': ['go', 'test', '-tags', go#config#BuildTags(), '-coverprofile', l:tmpname] + a:000,
          \ 'complete': function('s:coverage_callback', [l:tmpname]),
          \ 'bang': a:bang,
          \ 'for': 'GoTest',
          \ 'statustype': 'coverage',
          \ })
    return
  endif
  if go#config#EchoCommandInfo()
    call go#util#EchoProgress("testing...")
  endif
  let args = [a:bang, 0, "-coverprofile", l:tmpname]
  if a:0
    call extend(args, a:000)
  endif
  let disabled_term = 0
  if get(g:, 'go_term_enabled')
    let disabled_term = 1
    let g:go_term_enabled = 0
  endif
  let id = call('go#test#Test', args)
  if disabled_term
    let g:go_term_enabled = 1
  endif
  if has('nvim')
    call go#jobcontrol#AddHandler(function('s:coverage_handler'))
    let s:coverage_handler_jobs[id] = l:tmpname
    return
  endif
  if go#util#ShellError() == 0
    call go#coverage#overlay(l:tmpname)
  endif
@ -96,7 +85,7 @@ function! go#coverage#Clear() abort
  " remove the autocmd we defined
  augroup vim-go-coverage
-    autocmd!
+    autocmd! * <buffer>
  augroup end
 endfunction
@ -106,10 +95,11 @@ function! go#coverage#Browser(bang, ...) abort
  let l:tmpname = tempname()
  if go#util#has_job()
    call s:coverage_job({
-          \ 'cmd': ['go', 'test', '-coverprofile', l:tmpname],
+          \ 'cmd': ['go', 'test', '-tags', go#config#BuildTags(), '-coverprofile', l:tmpname],
          \ 'complete': function('s:coverage_browser_callback', [l:tmpname]),
          \ 'bang': a:bang,
          \ 'for': 'GoTest',
          \ 'statustype': 'coverage',
          \ })
    return
  endif
@ -120,16 +110,9 @@ function! go#coverage#Browser(bang, ...) abort
  endif
  let id = call('go#test#Test', args)
  if has('nvim')
    call go#jobcontrol#AddHandler(function('s:coverage_browser_handler'))
    let s:coverage_browser_handler_jobs[id] = l:tmpname
    return
  endif
  if go#util#ShellError() == 0
-    let openHTML = 'go tool cover -html='.l:tmpname
+    call go#util#ExecInDir(['go', 'tool', 'cover', '-html=' . l:tmpname])
    call go#tool#ExecuteInDir(openHTML)
  endif
  call delete(l:tmpname)
@ -259,7 +242,7 @@ function! go#coverage#overlay(file) abort
  " clear the matches if we leave the buffer
  augroup vim-go-coverage
-    autocmd!
+    autocmd! * <buffer>
    autocmd BufWinLeave <buffer> call go#coverage#Clear()
  augroup end
@ -277,48 +260,17 @@ function s:coverage_job(args)
  " autowrite is not enabled for jobs
  call go#cmd#autowrite()
-  let status_dir =  expand('%:p:h')
+  let disabled_term = 0
-  let Complete = a:args.complete
+  if go#config#TermEnabled()
-  function! s:complete(job, exit_status, data) closure
+    let disabled_term = 1
-    let status = {
+    call go#config#SetTermEnabled(0)
          \ 'desc': 'last status',
          \ 'type': "coverage",
          \ 'state': "finished",
          \ }
    if a:exit_status
      let status.state = "failed"
  endif
-    call go#statusline#Update(status_dir, status)
+  call go#job#Spawn(a:args.cmd, a:args)
    return Complete(a:job, a:exit_status, a:data)
  endfunction
-  let a:args.complete = funcref('s:complete')
+  if disabled_term
-  let callbacks = go#job#Spawn(a:args)
+    call go#config#SetTermEnabled(1)
-
+  endif
  let start_options = {
        \ 'callback': callbacks.callback,
        \ 'exit_cb': callbacks.exit_cb,
        \ 'close_cb': callbacks.close_cb,
        \ }
  " pre start
  let dir = getcwd()
  let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
  let jobdir = fnameescape(expand("%:p:h"))
  execute cd . jobdir
  call go#statusline#Update(status_dir, {
        \ 'desc': "current status",
        \ 'type': "coverage",
        \ 'state': "started",
        \})
  call job_start(a:args.cmd, start_options)
  " post start
  execute cd . fnameescape(dir)
 endfunction
 " coverage_callback is called when the coverage execution is finished
@ -332,47 +284,14 @@ endfunction
 function! s:coverage_browser_callback(coverfile, job, exit_status, data)
  if a:exit_status == 0
-    let openHTML = 'go tool cover -html='.a:coverfile
+    call go#util#ExecInDir(['go', 'tool', 'cover', '-html=' . a:coverfile])
    call go#tool#ExecuteInDir(openHTML)
  endif
  call delete(a:coverfile)
 endfunction
-" -----------------------
+" restore Vi compatibility settings
-" | Neovim job handlers |
+let &cpo = s:cpo_save
-" -----------------------
+unlet s:cpo_save
 let s:coverage_handler_jobs = {}
 let s:coverage_browser_handler_jobs = {}
 function! s:coverage_handler(job, exit_status, data) abort
  if !has_key(s:coverage_handler_jobs, a:job.id)
    return
  endif
  let l:tmpname = s:coverage_handler_jobs[a:job.id]
  if a:exit_status == 0
    call go#coverage#overlay(l:tmpname)
  endif
  call delete(l:tmpname)
  unlet s:coverage_handler_jobs[a:job.id]
 endfunction
 function! s:coverage_browser_handler(job, exit_status, data) abort
  if !has_key(s:coverage_browser_handler_jobs, a:job.id)
    return
  endif
  let l:tmpname = s:coverage_browser_handler_jobs[a:job.id]
  if a:exit_status == 0
    let openHTML = 'go tool cover -html='.l:tmpname
    call go#tool#ExecuteInDir(openHTML)
  endif
  call delete(l:tmpname)
  unlet s:coverage_browser_handler_jobs[a:job.id]
 endfunction
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/debug.vim
+++ b/pack/acp/start/vim-go/autoload/go/debug.vim
@ -1,22 +1,13 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 scriptencoding utf-8
 if !exists('g:go_debug_windows')
  let g:go_debug_windows = {
        \ 'stack': 'leftabove 20vnew',
        \ 'out':   'botright 10new',
        \ 'vars':  'leftabove 30vnew',
        \ }
 endif
 if !exists('g:go_debug_address')
  let g:go_debug_address = '127.0.0.1:8181'
 endif
 if !exists('s:state')
  let s:state = {
      \ 'rpcid': 1,
      \ 'running': 0,
      \ 'breakpoint': {},
      \ 'currentThread': {},
      \ 'localVars': {},
      \ 'functionArgs': {},
@ -25,7 +16,7 @@ if !exists('s:state')
      \}
  if go#util#HasDebug('debugger-state')
-    let g:go_debug_diag = s:state
+     call go#config#SetDebugDiag(s:state)
  endif
 endif
@ -37,14 +28,35 @@ function! s:groutineID() abort
  return s:state['currentThread'].goroutineID
 endfunction
-function! s:exit(job, status) abort
+function! s:complete(job, exit_status, data) abort
  let l:gotready = get(s:state, 'ready', 0)
  " copy messages to a:data _only_ when dlv exited non-zero and it was never
  " detected as ready (e.g. there was a compiler error).
  if a:exit_status > 0 && !l:gotready
      " copy messages to data so that vim-go's usual handling of errors from
      " async jobs will occur.
      call extend(a:data, s:state['message'])
  endif
  " return early instead of clearing any variables when the current job is not
  " a:job
  if has_key(s:state, 'job') && s:state['job'] != a:job
    return
  endif
  if has_key(s:state, 'job')
    call remove(s:state, 'job')
  endif
-  call s:clearState()
+
-  if a:status > 0
+  if has_key(s:state, 'ready')
-    call go#util#EchoError(s:state['message'])
+    call remove(s:state, 'ready')
  endif
  if has_key(s:state, 'ch')
    call remove(s:state, 'ch')
  endif
  call s:clearState()
 endfunction
 function! s:logger(prefix, ch, msg) abort
@ -71,57 +83,46 @@ endfunction
 function! s:call_jsonrpc(method, ...) abort
  if go#util#HasDebug('debugger-commands')
    if !exists('g:go_debug_commands')
      let g:go_debug_commands = []
    endif
    echom 'sending to dlv ' . a:method
  endif
-  if len(a:000) > 0 && type(a:000[0]) == v:t_func
+  let l:args = a:000
     let Cb = a:000[0]
     let args = a:000[1:]
  else
     let Cb = v:none
     let args = a:000
  endif
  let s:state['rpcid'] += 1
-  let req_json = json_encode({
+  let l:req_json = json_encode({
      \  'id': s:state['rpcid'],
      \  'method': a:method,
-      \  'params': args,
+      \  'params': l:args,
      \})
  try
-    " Use callback
+    let l:ch = s:state['ch']
-    if type(Cb) == v:t_func
+    if has('nvim')
-      let s:ch = ch_open('127.0.0.1:8181', {'mode': 'nl', 'callback': Cb})
+      call chansend(l:ch, l:req_json)
-      call ch_sendraw(s:ch, req_json)
+      while len(s:state.data) == 0
-
+        sleep 50m
-      if go#util#HasDebug('debugger-commands')
+        if get(s:state, 'ready', 0) == 0
        let g:go_debug_commands = add(g:go_debug_commands, {
              \ 'request':  req_json,
              \ 'response': Cb,
        \ })
      endif
          return
        endif
-
+      endwhile
-    let ch = ch_open('127.0.0.1:8181', {'mode': 'nl', 'timeout': 20000})
+      let resp_json = s:state.data[0]
-    call ch_sendraw(ch, req_json)
+      let s:state.data = s:state.data[1:]
-    let resp_json = ch_readraw(ch)
+    else
      call ch_sendraw(l:ch, req_json)
      let l:resp_raw = ch_readraw(l:ch)
      let resp_json = json_decode(l:resp_raw)
    endif
    if go#util#HasDebug('debugger-commands')
-      let g:go_debug_commands = add(g:go_debug_commands, {
+      let g:go_debug_commands = add(go#config#DebugCommands(), {
-            \ 'request':  req_json,
+            \ 'request':  l:req_json,
-            \ 'response': resp_json,
+            \ 'response': l:resp_json,
      \ })
    endif
-    let obj = json_decode(resp_json)
+    if type(l:resp_json) == v:t_dict && has_key(l:resp_json, 'error') && !empty(l:resp_json.error)
-    if type(obj) == v:t_dict && has_key(obj, 'error') && !empty(obj.error)
+      throw l:resp_json.error
      throw obj.error
    endif
-    return obj
+    return l:resp_json
  catch
    throw substitute(v:exception, '^Vim', '', '')
  endtry
@ -130,7 +131,7 @@ endfunction
 " Update the location of the current breakpoint or line we're halted on based on
 " response from dlv.
 function! s:update_breakpoint(res) abort
-  if type(a:res) ==# v:t_none
+  if type(a:res) ==# type(v:null)
    return
  endif
@ -227,26 +228,34 @@ function! s:clearState() abort
  let s:state['localVars'] = {}
  let s:state['functionArgs'] = {}
  let s:state['message'] = []
  silent! sign unplace 9999
 endfunction
 function! s:stop() abort
-  call s:clearState()
+  let l:res = s:call_jsonrpc('RPCServer.Detach', {'kill': v:true})
  if has_key(s:state, 'job')
    call go#job#Wait(s:state['job'])
    " while waiting, the s:complete may have already removed job from s:state.
    if has_key(s:state, 'job')
    call job_stop(s:state['job'])
      call remove(s:state, 'job')
    endif
  endif
  if has_key(s:state, 'ready')
    call remove(s:state, 'ready')
  endif
  if has_key(s:state, 'ch')
    call remove(s:state, 'ch')
  endif
  call s:clearState()
 endfunction
 function! go#debug#Stop() abort
  " Remove signs.
  for k in keys(s:state['breakpoint'])
    let bt = s:state['breakpoint'][k]
    if bt.id >= 0
      silent exe 'sign unplace ' . bt.id
    endif
  endfor
  " Remove all commands and add back the default commands.
  for k in map(split(execute('command GoDebug'), "\n")[1:], 'matchstr(v:val, "^\\s*\\zs\\S\\+")')
    exe 'delcommand' k
@ -272,8 +281,15 @@ function! go#debug#Stop() abort
  silent! exe bufwinnr(bufnr('__GODEBUG_VARIABLES__')) 'wincmd c'
  silent! exe bufwinnr(bufnr('__GODEBUG_OUTPUT__')) 'wincmd c'
-  set noballooneval
+  if has('balloon_eval')
-  set balloonexpr=
+    let &ballooneval=s:ballooneval
    let &balloonexpr=s:balloonexpr
  endif
  augroup vim-go-debug
    autocmd!
  augroup END
  augroup! vim-go-debug
 endfunction
 function! s:goto_file() abort
@ -393,22 +409,8 @@ function! s:expand_var() abort
  endif
 endfunction
-function! s:start_cb(ch, json) abort
+function! s:start_cb() abort
-  let res = json_decode(a:json)
+  let l:winid = win_getid()
  if type(res) == v:t_dict && has_key(res, 'error') && !empty(res.error)
    throw res.error
  endif
  if empty(res) || !has_key(res, 'result')
    return
  endif
  for bt in res.result.Breakpoints
    if bt.id >= 0
      let s:state['breakpoint'][bt.id] = bt
      exe 'sign place '. bt.id .' line=' . bt.line . ' name=godebugbreakpoint file=' . bt.file
    endif
  endfor
  let oldbuf = bufnr('%')
  silent! only!
  let winnum = bufwinnr(bufnr('__GODEBUG_STACKTRACE__'))
@ -416,8 +418,9 @@ function! s:start_cb(ch, json) abort
    return
  endif
-  if exists('g:go_debug_windows["stack"]') && g:go_debug_windows['stack'] != ''
+  let debugwindows = go#config#DebugWindows()
-    exe 'silent ' . g:go_debug_windows['stack']
+  if has_key(debugwindows, "stack") && debugwindows['stack'] != ''
    exe 'silent ' . debugwindows['stack']
    silent file `='__GODEBUG_STACKTRACE__'`
    setlocal buftype=nofile bufhidden=wipe nomodified nobuflisted noswapfile nowrap nonumber nocursorline
    setlocal filetype=godebugstacktrace
@ -425,16 +428,16 @@ function! s:start_cb(ch, json) abort
    nmap <buffer> q <Plug>(go-debug-stop)
  endif
-  if exists('g:go_debug_windows["out"]') && g:go_debug_windows['out'] != ''
+  if has_key(debugwindows, "out") && debugwindows['out'] != ''
-    exe 'silent ' . g:go_debug_windows['out']
+    exe 'silent ' . debugwindows['out']
    silent file `='__GODEBUG_OUTPUT__'`
    setlocal buftype=nofile bufhidden=wipe nomodified nobuflisted noswapfile nowrap nonumber nocursorline
    setlocal filetype=godebugoutput
    nmap <buffer> q <Plug>(go-debug-stop)
  endif
-  if exists('g:go_debug_windows["vars"]') && g:go_debug_windows['vars'] != ''
+  if has_key(debugwindows, "vars") && debugwindows['vars'] != ''
-    exe 'silent ' . g:go_debug_windows['vars']
+    exe 'silent ' . debugwindows['vars']
    silent file `='__GODEBUG_VARIABLES__'`
    setlocal buftype=nofile bufhidden=wipe nomodified nobuflisted noswapfile nowrap nonumber nocursorline
    setlocal filetype=godebugvariables
@ -462,75 +465,124 @@ function! s:start_cb(ch, json) abort
  nnoremap <silent> <Plug>(go-debug-stop)       :<C-u>call go#debug#Stop()<CR>
  nnoremap <silent> <Plug>(go-debug-print)      :<C-u>call go#debug#Print(expand('<cword>'))<CR>
-  nmap <F5>   <Plug>(go-debug-continue)
+  if has('balloon_eval')
-  nmap <F6>   <Plug>(go-debug-print)
+    let s:balloonexpr=&balloonexpr
-  nmap <F9>   <Plug>(go-debug-breakpoint)
+    let s:ballooneval=&ballooneval
  nmap <F10>  <Plug>(go-debug-next)
  nmap <F11>  <Plug>(go-debug-step)
    set balloonexpr=go#debug#BalloonExpr()
    set ballooneval
  endif
-  exe bufwinnr(oldbuf) 'wincmd w'
+  call win_gotoid(l:winid)
  augroup vim-go-debug
    autocmd! * <buffer>
    autocmd FileType go nmap <buffer> <F5>   <Plug>(go-debug-continue)
    autocmd FileType go nmap <buffer> <F6>   <Plug>(go-debug-print)
    autocmd FileType go nmap <buffer> <F9>   <Plug>(go-debug-breakpoint)
    autocmd FileType go nmap <buffer> <F10>  <Plug>(go-debug-next)
    autocmd FileType go nmap <buffer> <F11>  <Plug>(go-debug-step)
  augroup END
  doautocmd vim-go-debug FileType go
 endfunction
 function! s:err_cb(ch, msg) abort
-  call go#util#EchoError(a:msg)
+  if get(s:state, 'ready', 0) != 0
    call call('s:logger', ['ERR: ', a:ch, a:msg])
    return
  endif
  let s:state['message'] += [a:msg]
 endfunction
 function! s:out_cb(ch, msg) abort
-  call go#util#EchoProgress(a:msg)
+  if get(s:state, 'ready', 0) != 0
    call call('s:logger', ['OUT: ', a:ch, a:msg])
    return
  endif
  let s:state['message'] += [a:msg]
-  " TODO: why do this in this callback?
+  if stridx(a:msg, go#config#DebugAddress()) != -1
-  if stridx(a:msg, g:go_debug_address) != -1
+    if has('nvim')
-    call ch_setoptions(a:ch, {
+      let s:state['data'] = []
-      \ 'out_cb': function('s:logger', ['OUT: ']),
+      let l:state = {'databuf': ''}
      \ 'err_cb': function('s:logger', ['ERR: ']),
      \})
-    " Tell dlv about the breakpoints that the user added before delve started.
+      " explicitly bind callback to state so that within it, self will
-    let l:breaks = copy(s:state.breakpoint)
+      " always refer to state. See :help Partial for more information.
-    let s:state['breakpoint'] = {}
+      let l:state.on_data = function('s:on_data', [], l:state)
-    for l:bt in values(l:breaks)
+      let l:ch = sockconnect('tcp', go#config#DebugAddress(), {'on_data': l:state.on_data, 'state': l:state})
-      call go#debug#Breakpoint(bt.line)
+      if l:ch == 0
        call go#util#EchoError("could not connect to debugger")
        call go#job#Stop(s:state['job'])
        return
      endif
    else
      let l:ch = ch_open(go#config#DebugAddress(), {'mode': 'raw', 'timeout': 20000})
      if ch_status(l:ch) !=# 'open'
        call go#util#EchoError("could not connect to debugger")
        call go#job#Stop(s:state['job'])
        return
      endif
    endif
    let s:state['ch'] = l:ch
    " After this block executes, Delve will be running with all the
    " breakpoints setup, so this callback doesn't have to run again; just log
    " future messages.
    let s:state['ready'] = 1
    " replace all the breakpoints set before delve started so that the ids won't overlap.
    let l:breakpoints = s:list_breakpoints()
    for l:bt in s:list_breakpoints()
      exe 'sign unplace '. l:bt.id
      call go#debug#Breakpoint(l:bt.line, l:bt.file)
    endfor
-    call s:call_jsonrpc('RPCServer.ListBreakpoints', function('s:start_cb'))
+    call s:start_cb()
  endif
 endfunction
 function! s:on_data(ch, data, event) dict abort
  let l:data = self.databuf
  for l:msg in a:data
    let l:data .= l:msg
  endfor
  try
    let l:res = json_decode(l:data)
    let s:state['data'] = add(s:state['data'], l:res)
    let self.databuf = ''
  catch
    " there isn't a complete message in databuf: buffer l:data and try
    " again when more data comes in.
    let self.databuf = l:data
  finally
  endtry
 endfunction
 " Start the debug mode. The first argument is the package name to compile and
 " debug, anything else will be passed to the running program.
 function! go#debug#Start(is_test, ...) abort
-  if has('nvim')
+  call go#cmd#autowrite()
-    call go#util#EchoError('This feature only works in Vim for now; Neovim is not (yet) supported. Sorry :-(')
+
    return
  endif
  if !go#util#has_job()
-    call go#util#EchoError('This feature requires Vim 8.0.0087 or newer with +job.')
+    call go#util#EchoError('This feature requires either Vim 8.0.0087 or newer with +job or Neovim.')
    return
  endif
  " It's already running.
-  if has_key(s:state, 'job') && job_status(s:state['job']) == 'run'
+  if has_key(s:state, 'job')
-    return
+    return s:state['job']
  endif
  let s:start_args = a:000
  if go#util#HasDebug('debugger-state')
-    let g:go_debug_diag = s:state
+    call go#config#SetDebugDiag(s:state)
  endif
  " cd in to test directory; this is also what running "go test" does.
  if a:is_test
    lcd %:p:h
  endif
  let s:state.is_test = a:is_test
  let dlv = go#path#CheckBinPath("dlv")
  if empty(dlv)
    return
@ -539,14 +591,27 @@ function! go#debug#Start(is_test, ...) abort
  try
    if len(a:000) > 0
      let l:pkgname = a:1
      " Expand .; otherwise this won't work from a tmp dir.
      if l:pkgname[0] == '.'
-        let l:pkgname = go#package#FromPath(getcwd()) . l:pkgname[1:]
+        let l:pkgname = go#package#FromPath(l:pkgname)
      endif
    else
      let l:pkgname = go#package#FromPath(getcwd())
    endif
    if l:pkgname is -1
      call go#util#EchoError('could not determine package name')
      return
    endif
    " cd in to test directory; this is also what running "go test" does.
    if a:is_test
      " TODO(bc): Either remove this if it's ok to do so or else record it and
      " reset cwd after the job completes.
      lcd %:p:h
    endif
    let s:state.is_test = a:is_test
    let l:args = []
    if len(a:000) > 1
      let l:args = ['--'] + a:000[1:]
@ -555,29 +620,40 @@ function! go#debug#Start(is_test, ...) abort
    let l:cmd = [
          \ dlv,
          \ (a:is_test ? 'test' : 'debug'),
          \ l:pkgname,
          \ '--output', tempname(),
          \ '--headless',
          \ '--api-version', '2',
-          \ '--log',
+          \ '--listen', go#config#DebugAddress(),
          \ '--listen', g:go_debug_address,
          \ '--accept-multiclient',
    \]
-    if get(g:, 'go_build_tags', '') isnot ''
+    let l:debugLogOutput = go#config#DebugLogOutput()
-      let l:cmd += ['--build-flags', '--tags=' . g:go_build_tags]
+    if l:debugLogOutput != ''
      let cmd += ['--log', '--log-output', l:debugLogOutput]
    endif
    let l:buildtags = go#config#BuildTags()
    if buildtags isnot ''
      let l:cmd += ['--build-flags', '--tags=' . buildtags]
    endif
    let l:cmd += l:args
    call go#util#EchoProgress('Starting GoDebug...')
    let s:state['message'] = []
-    let s:state['job'] = job_start(l:cmd, {
+    let l:opts = {
-      \ 'out_cb': function('s:out_cb'),
+          \ 'for': 'GoDebug',
-      \ 'err_cb': function('s:err_cb'),
+          \ 'statustype': 'debug',
-      \ 'exit_cb': function('s:exit'),
+          \ 'complete': function('s:complete'),
-      \ 'stoponexit': 'kill',
+          \ }
-    \})
+    let l:opts = go#job#Options(l:opts)
    let l:opts.out_cb = function('s:out_cb')
    let l:opts.err_cb = function('s:err_cb')
    let l:opts.stoponexit = 'kill'
    let s:state['job'] = go#job#Start(l:cmd, l:opts)
  catch
    call go#util#EchoError(v:exception)
  endtry
  return s:state['job']
 endfunction
 " Translate a reflect kind constant to a human string.
@ -670,13 +746,12 @@ endfunction
 function! s:eval(arg) abort
  try
-    let res = s:call_jsonrpc('RPCServer.State')
+    let l:res = s:call_jsonrpc('RPCServer.State')
-    let goroutineID = res.result.State.currentThread.goroutineID
+    let l:res = s:call_jsonrpc('RPCServer.Eval', {
    let res = s:call_jsonrpc('RPCServer.Eval', {
          \ 'expr':  a:arg,
-          \ 'scope': {'GoroutineID': goroutineID}
+          \ 'scope': {'GoroutineID': l:res.result.State.currentThread.goroutineID}
      \ })
-    return s:eval_tree(res.result.Variable, 0)
+    return s:eval_tree(l:res.result.Variable, 0)
  catch
    call go#util#EchoError(v:exception)
    return ''
@ -726,12 +801,11 @@ endfunction
 function! go#debug#Set(symbol, value) abort
  try
-    let res = s:call_jsonrpc('RPCServer.State')
+    let l:res = s:call_jsonrpc('RPCServer.State')
    let goroutineID = res.result.State.currentThread.goroutineID
    call s:call_jsonrpc('RPCServer.Set', {
          \ 'symbol': a:symbol,
          \ 'value':  a:value,
-          \ 'scope':  {'GoroutineID': goroutineID}
+          \ 'scope':  {'GoroutineID': l:res.result.State.currentThread.goroutineID}
    \ })
  catch
    call go#util#EchoError(v:exception)
@ -742,27 +816,20 @@ endfunction
 function! s:update_stacktrace() abort
  try
-    let res = s:call_jsonrpc('RPCServer.Stacktrace', {'id': s:groutineID(), 'depth': 5})
+    let l:res = s:call_jsonrpc('RPCServer.Stacktrace', {'id': s:groutineID(), 'depth': 5})
-    call s:show_stacktrace(res)
+    call s:show_stacktrace(l:res)
  catch
    call go#util#EchoError(v:exception)
  endtry
 endfunction
-function! s:stack_cb(ch, json) abort
+function! s:stack_cb(res) abort
  let s:stack_name = ''
  let res = json_decode(a:json)
  if type(res) == v:t_dict && has_key(res, 'error') && !empty(res.error)
    call go#util#EchoError(res.error)
    call s:clearState()
    call go#debug#Restart()
    return
  endif
-  if empty(res) || !has_key(res, 'result')
+  if empty(a:res) || !has_key(a:res, 'result')
    return
  endif
-  call s:update_breakpoint(res)
+  call s:update_breakpoint(a:res)
  call s:update_stacktrace()
  call s:update_variables()
 endfunction
@ -780,7 +847,7 @@ function! go#debug#Stack(name) abort
  endif
  " Add a breakpoint to the main.Main if the user didn't define any.
-  if len(s:state['breakpoint']) is 0
+  if len(s:list_breakpoints()) is 0
    if go#debug#Breakpoint() isnot 0
      let s:state.running = 0
      return
@ -793,36 +860,34 @@ function! go#debug#Stack(name) abort
      call s:call_jsonrpc('RPCServer.CancelNext')
    endif
    let s:stack_name = l:name
-    call s:call_jsonrpc('RPCServer.Command', function('s:stack_cb'), {'name': l:name})
+    try
      let res =  s:call_jsonrpc('RPCServer.Command', {'name': l:name})
      call s:stack_cb(res)
    catch
      call go#util#EchoError(v:exception)
      call s:clearState()
      call go#debug#Restart()
    endtry
  catch
    call go#util#EchoError(v:exception)
  endtry
 endfunction
 function! go#debug#Restart() abort
-  try
+  call go#cmd#autowrite()
-    call job_stop(s:state['job'])
+
-    while has_key(s:state, 'job') && job_status(s:state['job']) is# 'run'
+  try
-      sleep 50m
+    call s:stop()
    endwhile
    let l:breaks = s:state['breakpoint']
    let s:state = {
        \ 'rpcid': 1,
        \ 'running': 0,
        \ 'breakpoint': {},
        \ 'currentThread': {},
        \ 'localVars': {},
        \ 'functionArgs': {},
        \ 'message': [],
        \}
    " Preserve breakpoints.
    for bt in values(l:breaks)
      " TODO: should use correct filename
      exe 'sign unplace '. bt.id .' file=' . bt.file
      call go#debug#Breakpoint(bt.line)
    endfor
    call call('go#debug#Start', s:start_args)
  catch
    call go#util#EchoError(v:exception)
@ -837,47 +902,45 @@ endfunction
 " Toggle breakpoint. Returns 0 on success and 1 on failure.
 function! go#debug#Breakpoint(...) abort
  let l:filename = fnamemodify(expand('%'), ':p:gs!\\!/!')
  let l:linenr = line('.')
  " Get line number from argument.
  if len(a:000) > 0
-    let linenr = str2nr(a:1)
+    let l:linenr = str2nr(a:1)
-    if linenr is 0
+    if l:linenr is 0
      call go#util#EchoError('not a number: ' . a:1)
      return 0
    endif
-  else
+    if len(a:000) > 1
-    let linenr = line('.')
+      let l:filename = a:2
    endif
  endif
  try
    " Check if we already have a breakpoint for this line.
-    let found = v:none
+    let l:found = {}
-    for k in keys(s:state.breakpoint)
+    for l:bt in s:list_breakpoints()
-      let bt = s:state.breakpoint[k]
+      if l:bt.file is# l:filename && l:bt.line is# l:linenr
-      if bt.file == l:filename && bt.line == linenr
+        let l:found = l:bt
        let found = bt
        break
      endif
    endfor
    " Remove breakpoint.
-    if type(found) == v:t_dict
+    if type(l:found) == v:t_dict && !empty(l:found)
-      call remove(s:state['breakpoint'], bt.id)
+      exe 'sign unplace '. l:found.id .' file=' . l:found.file
      exe 'sign unplace '. found.id .' file=' . found.file
      if s:isActive()
-        let res = s:call_jsonrpc('RPCServer.ClearBreakpoint', {'id': found.id})
+        let res = s:call_jsonrpc('RPCServer.ClearBreakpoint', {'id': l:found.id})
      endif
    " Add breakpoint.
    else
      if s:isActive()
-        let res = s:call_jsonrpc('RPCServer.CreateBreakpoint', {'Breakpoint': {'file': l:filename, 'line': linenr}})
+        let l:res = s:call_jsonrpc('RPCServer.CreateBreakpoint', {'Breakpoint': {'file': l:filename, 'line': l:linenr}})
-        let bt = res.result.Breakpoint
+        let l:bt = res.result.Breakpoint
-        exe 'sign place '. bt.id .' line=' . bt.line . ' name=godebugbreakpoint file=' . bt.file
+        exe 'sign place '. l:bt.id .' line=' . l:bt.line . ' name=godebugbreakpoint file=' . l:bt.file
        let s:state['breakpoint'][bt.id] = bt
      else
-        let id = len(s:state['breakpoint']) + 1
+        let l:id = len(s:list_breakpoints()) + 1
-        let s:state['breakpoint'][id] = {'id': id, 'file': l:filename, 'line': linenr}
+        exe 'sign place ' . l:id . ' line=' . l:linenr . ' name=godebugbreakpoint file=' . l:filename
        exe 'sign place '. id .' line=' . linenr . ' name=godebugbreakpoint file=' . l:filename
      endif
    endif
  catch
@ -888,17 +951,43 @@ function! go#debug#Breakpoint(...) abort
  return 0
 endfunction
-sign define godebugbreakpoint text=> texthl=GoDebugBreakpoint
+function! s:list_breakpoints()
-sign define godebugcurline text== linehl=GoDebugCurrent texthl=GoDebugCurrent
+  " :sign place
  " --- Signs ---
  " Signs for a.go:
  "     line=15  id=2  name=godebugbreakpoint
  "     line=16  id=1  name=godebugbreakpoint
  " Signs for a_test.go:
  "     line=6  id=3  name=godebugbreakpoint
-fun! s:hi()
+  let l:signs = []
-  hi GoDebugBreakpoint term=standout ctermbg=117 ctermfg=0 guibg=#BAD4F5  guifg=Black
+  let l:file = ''
-  hi GoDebugCurrent    term=reverse  ctermbg=12  ctermfg=7 guibg=DarkBlue guifg=White
+  for l:line in split(execute('sign place'), '\n')[1:]
-endfun
+    if l:line =~# '^Signs for '
-augroup vim-go-breakpoint
+      let l:file = l:line[10:-2]
-  autocmd!
+      continue
-  autocmd ColorScheme * call s:hi()
+    endif
-augroup end
+
-call s:hi()
+    if l:line !~# 'name=godebugbreakpoint'
      continue
    endif
    let l:sign = matchlist(l:line, '\vline\=(\d+) +id\=(\d+)')
    call add(l:signs, {
          \ 'id': l:sign[2],
          \ 'file': fnamemodify(l:file, ':p'),
          \ 'line': str2nr(l:sign[1]),
    \ })
  endfor
  return l:signs
 endfunction
 sign define godebugbreakpoint text=> texthl=GoDebugBreakpoint
 sign define godebugcurline    text== texthl=GoDebugCurrent    linehl=GoDebugCurrent
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/debug_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/debug_test.vim
@ -0,0 +1,101 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function! Test_GoDebugStart_Empty() abort
  call s:debug()
 endfunction
 function! Test_GoDebugStart_RelativePackage() abort
  call s:debug('./debug/debugmain')
 endfunction
 function! Test_GoDebugStart_Package() abort
  call s:debug('debug/debugmain')
 endfunction
 function! Test_GoDebugStart_Errors() abort
  if !go#util#has_job()
    return
  endif
  try
    let l:expected = [
          \ {'lnum': 0, 'bufnr': 0, 'col': 0, 'valid': 0, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': '# debug/compilerror'},
          \ {'lnum': 6, 'bufnr': 7, 'col': 22, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': ' syntax error: unexpected newline, expecting comma or )'},
          \ {'lnum': 0, 'bufnr': 0, 'col': 0, 'valid': 0, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': 'exit status 2'}
          \]
    call setqflist([], 'r')
    let l:tmp = gotest#load_fixture('debug/compilerror/main.go')
    call assert_false(exists(':GoDebugStop'))
    let l:cd = exists('*haslocaldir') && haslocaldir() ? 'lcd' : 'cd'
    execute l:cd . ' debug/compilerror'
    call go#debug#Start(0)
    let l:actual = getqflist()
    let l:start = reltime()
    while len(l:actual) == 0 && reltimefloat(reltime(l:start)) < 10
      sleep 100m
      let l:actual = getqflist()
    endwhile
    call gotest#assert_quickfix(l:actual, l:expected)
    call assert_false(exists(':GoDebugStop'))
  finally
    call delete(l:tmp, 'rf')
    " clear the quickfix lists
    call setqflist([], 'r')
  endtry
 endfunction
 function! s:debug(...) abort
  if !go#util#has_job()
    return
  endif
  try
    let l:tmp = gotest#load_fixture('debug/debugmain/debugmain.go')
    call go#debug#Breakpoint(6)
    call assert_false(exists(':GoDebugStop'))
    if a:0 == 0
      let l:cd = exists('*haslocaldir') && haslocaldir() ? 'lcd' : 'cd'
      execute l:cd . ' debug/debugmain'
      let l:job = go#debug#Start(0)
    else
      let l:job = go#debug#Start(0, a:1)
    endif
    let l:start = reltime()
    while !exists(':GoDebugStop') && reltimefloat(reltime(l:start)) < 10
      sleep 100m
    endwhile
    call assert_true(exists(':GoDebugStop'))
    call gotest#assert_quickfix(getqflist(), [])
    call go#debug#Stop()
    if !has('nvim')
      call assert_equal(job_status(l:job), 'dead')
    endif
    call assert_false(exists(':GoDebugStop'))
  finally
    call go#debug#Breakpoint(6)
    call delete(l:tmp, 'rf')
  endtry
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/decls.vim
+++ b/pack/acp/start/vim-go/autoload/go/decls.vim
@ -1,11 +1,12 @@
-if !exists('g:go_decls_mode')
+" don't spam the user when Vim is started in Vi compatibility mode
-  let g:go_decls_mode = ''
+let s:cpo_save = &cpo
-endif
+set cpo&vim
 function! go#decls#Decls(mode, ...) abort
-  if g:go_decls_mode == 'ctrlp'
+  let decls_mode = go#config#DeclsMode()
  if decls_mode == 'ctrlp'
    call ctrlp#init(call("ctrlp#decls#cmd", [a:mode] + a:000))
-  elseif g:go_decls_mode == 'fzf'
+  elseif decls_mode == 'fzf'
    call call("fzf#decls#cmd", [a:mode] + a:000)
  else
    if globpath(&rtp, 'plugin/ctrlp.vim') != ""
@ -18,4 +19,8 @@ function! go#decls#Decls(mode, ...) abort
  end
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/def.vim
+++ b/pack/acp/start/vim-go/autoload/go/def.vim
@ -1,39 +1,38 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 let s:go_stack = []
 let s:go_stack_level = 0
-function! go#def#Jump(mode) abort
+function! go#def#Jump(mode, type) abort
  let fname = fnamemodify(expand("%"), ':p:gs?\\?/?')
  " so guru right now is slow for some people. previously we were using
  " godef which also has it's own quirks. But this issue come up so many
  " times I've decided to support both. By default we still use guru as it
  " covers all edge cases, but now anyone can switch to godef if they wish
-  let bin_name = get(g:, 'go_def_mode', 'guru')
+  let bin_name = go#config#DefMode()
  if bin_name == 'godef'
-    if &modified
+    let l:cmd = ['godef',
-      " Write current unsaved buffer to a temp file and use the modified content
+          \ '-f=' . l:fname,
-      let l:tmpname = tempname()
+          \ '-o=' . go#util#OffsetCursor(),
-      call writefile(go#util#GetLines(), l:tmpname)
+          \ '-t']
      let fname = l:tmpname
    endif
-    let bin_path = go#path#CheckBinPath("godef")
+    if &modified
-    if empty(bin_path)
+      let l:stdin_content = join(go#util#GetLines(), "\n")
-      return
+      call add(l:cmd, "-i")
-    endif
+      let [l:out, l:err] = go#util#ExecInDir(l:cmd, l:stdin_content)
-    let command = printf("%s -f=%s -o=%s -t", go#util#Shellescape(bin_path),
+    else
-      \ go#util#Shellescape(fname), go#util#OffsetCursor())
+      let [l:out, l:err] = go#util#ExecInDir(l:cmd)
    let out = go#util#System(command)
    if exists("l:tmpname")
      call delete(l:tmpname)
    endif
  elseif bin_name == 'guru'
-    let bin_path = go#path#CheckBinPath("guru")
+    let cmd = [go#path#CheckBinPath(bin_name)]
-    if empty(bin_path)
+    let buildtags = go#config#BuildTags()
-      return
+    if buildtags isnot ''
      let cmd += ['-tags', buildtags]
    endif
    let cmd = [bin_path]
    let stdin_content = ""
    if &modified
@ -42,42 +41,46 @@ function! go#def#Jump(mode) abort
      call add(cmd, "-modified")
    endif
-    if exists('g:go_build_tags')
+    call extend(cmd, ["definition", fname . ':#' . go#util#OffsetCursor()])
      let tags = get(g:, 'go_build_tags')
      call extend(cmd, ["-tags", tags])
    endif
    let fname = fname.':#'.go#util#OffsetCursor()
    call extend(cmd, ["definition", fname])
    if go#util#has_job()
      let l:state = {}
      let l:spawn_args = {
            \ 'cmd': cmd,
-            \ 'complete': function('s:jump_to_declaration_cb', [a:mode, bin_name]),
+            \ 'complete': function('s:jump_to_declaration_cb', [a:mode, bin_name], l:state),
            \ 'for': '_',
            \ 'statustype': 'searching declaration',
            \ }
      if &modified
        let l:spawn_args.input = stdin_content
      endif
-      call go#util#EchoProgress("searching declaration ...")
+      call s:def_job(spawn_args, l:state)
      call s:def_job(spawn_args)
      return
    endif
    let command = join(cmd, " ")
    if &modified
-      let out = go#util#System(command, stdin_content)
+      let [l:out, l:err] = go#util#ExecInDir(l:cmd, l:stdin_content)
    else
-      let out = go#util#System(command)
+      let [l:out, l:err] = go#util#ExecInDir(l:cmd)
    endif
  elseif bin_name == 'gopls'
    let [l:line, l:col] = getpos('.')[1:2]
    " delegate to gopls, with an empty job object and an exit status of 0
    " (they're irrelevant for gopls).
    if a:type
      call go#lsp#TypeDef(l:fname, l:line, l:col, function('s:jump_to_declaration_cb', [a:mode, 'gopls', {}, 0]))
    else
-    call go#util#EchoError('go_def_mode value: '. bin_name .' is not valid. Valid values are: [godef, guru]')
+      call go#lsp#Definition(l:fname, l:line, l:col, function('s:jump_to_declaration_cb', [a:mode, 'gopls', {}, 0]))
    endif
    return
  else
    call go#util#EchoError('go_def_mode value: '. bin_name .' is not valid. Valid values are: [godef, guru, gopls]')
    return
  endif
-  if go#util#ShellError() != 0
+  if l:err
    call go#util#EchoError(out)
    return
  endif
@ -85,19 +88,26 @@ function! go#def#Jump(mode) abort
  call go#def#jump_to_declaration(out, a:mode, bin_name)
 endfunction
-function! s:jump_to_declaration_cb(mode, bin_name, job, exit_status, data) abort
+function! s:jump_to_declaration_cb(mode, bin_name, job, exit_status, data) abort dict
  if a:exit_status != 0
    return
  endif
  call go#def#jump_to_declaration(a:data[0], a:mode, a:bin_name)
-  call go#util#EchoSuccess(fnamemodify(a:data[0], ":t"))
+
  " capture the active window so that callbacks for jobs, exit_cb and
  " close_cb, and callbacks for gopls can return to it when a:mode caused a
  " split.
  let self.winid = win_getid(winnr())
 endfunction
 " go#def#jump_to_declaration parses out (expected to be
 " 'filename:line:col: message').
 function! go#def#jump_to_declaration(out, mode, bin_name) abort
  let final_out = a:out
  if a:bin_name == "godef"
-    " append the type information to the same line so our we can parse it.
+    " append the type information to the same line so it will be parsed
    " correctly using guru's output format.
    " This makes it compatible with guru output.
    let final_out = join(split(a:out, '\n'), ':')
  endif
@ -110,10 +120,24 @@ function! go#def#jump_to_declaration(out, mode, bin_name) abort
    let parts = split(out, ':')
  endif
  if len(parts) == 0
    call go#util#EchoError('go jump_to_declaration '. a:bin_name .' output is not valid.')
    return
  endif
  let line = 1
  let col = 1
  let ident = 0
  let filename = parts[0]
  if len(parts) > 1
    let line = parts[1]
  endif
  if len(parts) > 2
    let col = parts[2]
  endif
  if len(parts) > 3
    let ident = parts[3]
  endif
  " Remove anything newer than the current position, just like basic
  " vim tag support
@ -138,7 +162,7 @@ function! go#def#jump_to_declaration(out, mode, bin_name) abort
  if filename != fnamemodify(expand("%"), ':p:gs?\\?/?')
    " jump to existing buffer if, 1. we have enabled it, 2. the buffer is loaded
    " and 3. there is buffer window number we switch to
-    if get(g:, 'go_def_reuse_buffer', 0) && bufloaded(filename) != 0 && bufwinnr(filename) != -1
+    if go#config#DefReuseBuffer() && bufloaded(filename) != 0 && bufwinnr(filename) != -1
      " jumpt to existing buffer if it exists
      execute bufwinnr(filename) . 'wincmd w'
    else
@ -291,14 +315,25 @@ function! go#def#Stack(...) abort
  endif
 endfunction
-function s:def_job(args) abort
+function s:def_job(args, state) abort
-  let callbacks = go#job#Spawn(a:args)
+  let l:start_options = go#job#Options(a:args)
-  let start_options = {
+  let l:state = a:state
-        \ 'callback': callbacks.callback,
+  function! s:exit_cb(next, job, exitval) dict
-        \ 'exit_cb': callbacks.exit_cb,
+    call call(a:next, [a:job, a:exitval])
-        \ 'close_cb': callbacks.close_cb,
+    if has_key(self, 'winid')
-        \ }
+      call win_gotoid(self.winid)
    endif
  endfunction
  let l:start_options.exit_cb = funcref('s:exit_cb', [l:start_options.exit_cb], l:state)
  function! s:close_cb(next, ch) dict
    call call(a:next, [a:ch])
    if has_key(self, 'winid')
      call win_gotoid(self.winid)
    endif
  endfunction
  let l:start_options.close_cb = funcref('s:close_cb', [l:start_options.close_cb], l:state)
  if &modified
    let l:tmpname = tempname()
@ -307,7 +342,11 @@ function s:def_job(args) abort
    let l:start_options.in_name = l:tmpname
  endif
-  call job_start(a:args.cmd, start_options)
+  call go#job#Start(a:args.cmd, l:start_options)
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/def_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/def_test.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! Test_jump_to_declaration_guru() abort
  try
    let l:filename = 'def/jump.go'
@ -34,4 +38,37 @@ func! Test_jump_to_declaration_godef() abort
  endtry
 endfunc
 func! Test_Jump_leaves_lists() abort
  try
    let filename = 'def/jump.go'
    let l:tmp = gotest#load_fixture(l:filename)
    let expected = [{'lnum': 10, 'bufnr': bufnr('%'), 'col': 1, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': 'quux'}]
    call setloclist(winnr(), copy(expected), 'r' )
    call setqflist(copy(expected), 'r' )
    let l:bufnr = bufnr('%')
    call cursor(6, 7)
    call go#def#Jump('', 0)
    let start = reltime()
    while bufnr('%') == l:bufnr && reltimefloat(reltime(start)) < 10
      sleep 100m
    endwhile
    let actual = getloclist(winnr())
    call gotest#assert_quickfix(actual, expected)
    let actual = getqflist()
    call gotest#assert_quickfix(actual, expected)
  finally
    call delete(l:tmp, 'rf')
  endtry
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/doc.vim
+++ b/pack/acp/start/vim-go/autoload/go/doc.vim
@ -2,11 +2,11 @@
 " Use of this source code is governed by a BSD-style
 " license that can be found in the LICENSE file.
-let s:buf_nr = -1
+" don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
-if !exists("g:go_doc_command")
+let s:buf_nr = -1
  let g:go_doc_command = ["godoc"]
 endif
 function! go#doc#OpenBrowser(...) abort
  " check if we have gogetdoc as it gives us more and accurate information.
@ -14,8 +14,8 @@ function! go#doc#OpenBrowser(...) abort
  " non-json output of gogetdoc
  let bin_path = go#path#CheckBinPath('gogetdoc')
  if !empty(bin_path) && exists('*json_decode')
-    let json_out = s:gogetdoc(1)
+    let [l:json_out, l:err] = s:gogetdoc(1)
-    if go#util#ShellError() != 0
+    if l:err
      call go#util#EchoError(json_out)
      return
    endif
@ -29,15 +29,13 @@ function! go#doc#OpenBrowser(...) abort
    let name = out["name"]
    let decl = out["decl"]
-    let godoc_url = s:custom_godoc_url()
+    let godoc_url = go#config#DocUrl()
    let godoc_url .= "/" . import
    if decl !~ "^package"
      let godoc_url .= "#" . name
    endif
-    echo godoc_url
+    call go#util#OpenBrowser(godoc_url)
    call go#tool#OpenBrowser(godoc_url)
    return
  endif
@ -50,28 +48,22 @@ function! go#doc#OpenBrowser(...) abort
  let exported_name = pkgs[1]
  " example url: https://godoc.org/github.com/fatih/set#Set
-  let godoc_url = s:custom_godoc_url() . "/" . pkg . "#" . exported_name
+  let godoc_url = go#config#DocUrl() . "/" . pkg . "#" . exported_name
-  call go#tool#OpenBrowser(godoc_url)
+  call go#util#OpenBrowser(godoc_url)
 endfunction
 function! go#doc#Open(newmode, mode, ...) abort
  " With argument: run "godoc [arg]".
  if len(a:000)
-    if empty(go#path#CheckBinPath(g:go_doc_command[0]))
+    let [l:out, l:err] = go#util#Exec(['go', 'doc'] + a:000)
-      return
+  else " Without argument: run gogetdoc on cursor position.
-    endif
+    let [l:out, l:err] = s:gogetdoc(0)
    let command = printf("%s %s", go#util#Shelljoin(g:go_doc_command), join(a:000, ' '))
    let out = go#util#System(command)
  " Without argument: run gogetdoc on cursor position.
  else
    let out = s:gogetdoc(0)
    if out == -1
      return
    endif
  endif
-  if go#util#ShellError() != 0
+  if l:err
    call go#util#EchoError(out)
    return
  endif
@ -97,7 +89,7 @@ function! s:GodocView(newposition, position, content) abort
  if !is_visible
    if a:position == "split"
      " cap window height to 20, but resize it for smaller contents
-      let max_height = get(g:, "go_doc_max_height", 20)
+      let max_height = go#config#DocMaxHeight()
      let content_height = len(split(a:content, "\n"))
      if content_height > max_height
        exe 'resize ' . max_height
@ -129,39 +121,29 @@ function! s:GodocView(newposition, position, content) abort
  setlocal nomodifiable
  sil normal! gg
-  " close easily with <esc> or enter
+  " close easily with enter
  noremap <buffer> <silent> <CR> :<C-U>close<CR>
  noremap <buffer> <silent> <Esc> :<C-U>close<CR>
  " make sure any key that sends an escape as a prefix (e.g. the arrow keys)
  " don't cause the window to close.
  nnoremap <buffer> <silent> <Esc>[ <Esc>[
 endfunction
 function! s:gogetdoc(json) abort
-  " check if we have 'gogetdoc' and use it automatically
+  let l:cmd = [
-  let bin_path = go#path#CheckBinPath('gogetdoc')
+        \ 'gogetdoc',
-  if empty(bin_path)
+        \ '-tags', go#config#BuildTags(),
-    return -1
+        \ '-pos', expand("%:p:gs!\\!/!") . ':#' . go#util#OffsetCursor()]
  endif
  let cmd = [go#util#Shellescape(bin_path)]
  let offset = go#util#OffsetCursor()
  let fname = expand("%:p:gs!\\!/!")
  let pos = shellescape(fname.':#'.offset)
  let cmd += ["-pos", pos]
  if a:json
-    let cmd += ["-json"]
+    let l:cmd += ['-json']
  endif
  let command = join(cmd, " ")
  if &modified
-    let command .= " -modified"
+    let l:cmd += ['-modified']
-    let out = go#util#System(command, go#util#archive())
+    return go#util#Exec(l:cmd, go#util#archive())
  else
    let out = go#util#System(command)
  endif
-  return out
+  return go#util#Exec(l:cmd)
 endfunction
 " returns the package and exported name. exported name might be empty.
@ -206,18 +188,8 @@ function! s:godocWord(args) abort
  return [pkg, exported_name]
 endfunction
-function! s:custom_godoc_url() abort
+" restore Vi compatibility settings
-  let godoc_url = get(g:, 'go_doc_url', 'https://godoc.org')
+let &cpo = s:cpo_save
-  if godoc_url isnot 'https://godoc.org'
+unlet s:cpo_save
    " strip last '/' character if available
    let last_char = strlen(godoc_url) - 1
    if godoc_url[last_char] == '/'
      let godoc_url = strpart(godoc_url, 0, last_char)
    endif
    " custom godoc installations expect /pkg before package names
    let godoc_url .= "/pkg"
  endif
  return godoc_url
 endfunction
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/fillstruct.vim
+++ b/pack/acp/start/vim-go/autoload/go/fillstruct.vim
@ -1,8 +1,14 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function! go#fillstruct#FillStruct() abort
  let l:cmd = ['fillstruct',
      \ '-file', bufname(''),
      \ '-offset', go#util#OffsetCursor(),
      \ '-line', line('.')]
      " Needs: https://github.com/davidrjenni/reftools/pull/14
      "\ '-tags', go#config#BuildTags()]
  " Read from stdin if modified.
  if &modified
@ -59,4 +65,8 @@ function! go#fillstruct#FillStruct() abort
  endtry
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/fillstruct_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/fillstruct_test.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! Test_fillstruct() abort
  try
    let l:tmp = gotest#write_file('a/a.go', [
@ -87,4 +91,8 @@ func! Test_fillstruct_two_cursor() abort
  endtry
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/fmt.vim
+++ b/pack/acp/start/vim-go/autoload/go/fmt.vim
@ -5,21 +5,9 @@
 " fmt.vim: Vim command to format Go files with gofmt (and gofmt compatible
 " toorls, such as goimports).
-if !exists("g:go_fmt_command")
+" don't spam the user when Vim is started in Vi compatibility mode
-  let g:go_fmt_command = "gofmt"
+let s:cpo_save = &cpo
-endif
+set cpo&vim
 if !exists('g:go_fmt_options')
  let g:go_fmt_options = ''
 endif
 if !exists('g:go_fmt_fail_silently')
  let g:go_fmt_fail_silently = 0
 endif
 if !exists("g:go_fmt_experimental")
  let g:go_fmt_experimental = 0
 endif
 "  we have those problems :
 "  http://stackoverflow.com/questions/12741977/prevent-vim-from-updating-its-undo-tree
@ -30,7 +18,7 @@ endif
 "  this and have VimL experience, please look at the function for
 "  improvements, patches are welcome :)
 function! go#fmt#Format(withGoimport) abort
-  if g:go_fmt_experimental == 1
+  if go#config#FmtExperimental()
    " Using winsaveview to save/restore cursor state has the problem of
    " closing folds on save:
    "   https://github.com/fatih/vim-go/issues/502
@ -64,18 +52,18 @@ function! go#fmt#Format(withGoimport) abort
    let l:tmpname = tr(l:tmpname, '\', '/')
  endif
-  let bin_name = g:go_fmt_command
+  let bin_name = go#config#FmtCommand()
  if a:withGoimport == 1
    let bin_name = "goimports"
  endif
  let current_col = col('.')
-  let out = go#fmt#run(bin_name, l:tmpname, expand('%'))
+  let [l:out, l:err] = go#fmt#run(bin_name, l:tmpname, expand('%'))
  let diff_offset = len(readfile(l:tmpname)) - line('$')
-  if go#util#ShellError() == 0
+  if l:err == 0
    call go#fmt#update_file(l:tmpname, expand('%'))
-  elseif g:go_fmt_fail_silently == 0
+  elseif !go#config#FmtFailSilently()
    let errors = s:parse_errors(expand('%'), out)
    call s:show_errors(errors)
  endif
@ -83,7 +71,7 @@ function! go#fmt#Format(withGoimport) abort
  " We didn't use the temp file, so clean up
  call delete(l:tmpname)
-  if g:go_fmt_experimental == 1
+  if go#config#FmtExperimental()
    " restore our undo history
    silent! exe 'rundo ' . tmpundofile
    call delete(tmpundofile)
@ -154,64 +142,27 @@ endfunction
 " run runs the gofmt/goimport command for the given source file and returns
 " the output of the executed command. Target is the real file to be formatted.
 function! go#fmt#run(bin_name, source, target)
-  let cmd = s:fmt_cmd(a:bin_name, a:source, a:target)
+  let l:cmd = s:fmt_cmd(a:bin_name, a:source, a:target)
-  if empty(cmd)
+  if empty(l:cmd)
    return
  endif
-
+  return go#util#Exec(l:cmd)
  let command = join(cmd, " ")
  " execute our command...
  let out = go#util#System(command)
  return out
 endfunction
-" fmt_cmd returns a dict that contains the command to execute gofmt (or
+" fmt_cmd returns the command to run as a list.
 " goimports). args is dict with
 function! s:fmt_cmd(bin_name, source, target)
-  " check if the user has installed command binary.
+  let l:cmd = [a:bin_name, '-w']
  " For example if it's goimports, let us check if it's installed,
  " if not the user get's a warning via go#path#CheckBinPath()
  let bin_path = go#path#CheckBinPath(a:bin_name)
  if empty(bin_path)
    return []
  endif
  " start constructing the command
  let bin_path = go#util#Shellescape(bin_path)
  let cmd = [bin_path]
  call add(cmd, "-w")
  " add the options for binary (if any). go_fmt_options was by default of type
  " string, however to allow customization it's now a dictionary of binary
  " name mapping to options.
-  let opts = g:go_fmt_options
+  let opts = go#config#FmtOptions()
-  if type(g:go_fmt_options) == type({})
+  if type(opts) == type({})
-    let opts = has_key(g:go_fmt_options, a:bin_name) ? g:go_fmt_options[a:bin_name] : ""
+    let opts = has_key(opts, a:bin_name) ? opts[a:bin_name] : ""
  endif
  call extend(cmd, split(opts, " "))
-
+  if a:bin_name is# 'goimports'
-  if a:bin_name == "goimports"
+    call extend(cmd, ["-srcdir", a:target])
    " lazy check if goimports support `-srcdir`. We should eventually remove
    " this in the future
    if !exists('b:goimports_vendor_compatible')
      let out = go#util#System(bin_path . " --help")
      if out !~ "-srcdir"
        call go#util#EchoWarning(printf("vim-go: goimports (%s) does not support srcdir. Update with: :GoUpdateBinaries", bin_path))
      else
        let b:goimports_vendor_compatible = 1
      endif
    endif
    if exists('b:goimports_vendor_compatible') && b:goimports_vendor_compatible
      let ssl_save = &shellslash
      set noshellslash
      " use the filename without the fully qualified name if the tree is
      " symlinked into the GOPATH, goimports won't work properly.
      call extend(cmd, ["-srcdir", shellescape(a:target)])
      let &shellslash = ssl_save
    endif
  endif
  call add(cmd, a:source)
@ -254,14 +205,18 @@ function! s:show_errors(errors) abort
 endfunction
 function! go#fmt#ToggleFmtAutoSave() abort
-  if get(g:, "go_fmt_autosave", 1)
+  if go#config#FmtAutosave()
-    let g:go_fmt_autosave = 0
+    call go#config#SetFmtAutosave(0)
    call go#util#EchoProgress("auto fmt disabled")
    return
  end
-  let g:go_fmt_autosave = 1
+  call go#config#SetFmtAutosave(1)
  call go#util#EchoProgress("auto fmt enabled")
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/fmt_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/fmt_test.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! Test_run_fmt() abort
  let actual_file = tempname()
  call writefile(readfile("test-fixtures/fmt/hello.go"), actual_file)
@ -46,4 +50,8 @@ func! Test_goimports() abort
  call assert_equal(expected, actual)
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/guru.vim
+++ b/pack/acp/start/vim-go/autoload/go/guru.vim
@ -1,5 +1,9 @@
 "  guru.vim -- Vim integration for the Go guru.
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 " guru_cmd returns a dict that contains the command to execute guru. args
 " is dict with following options:
 "  mode        : guru mode, such as 'implements'
@ -14,14 +18,9 @@ function! s:guru_cmd(args) range abort
  let format = a:args.format
  let needs_scope = a:args.needs_scope
  let selected = a:args.selected
  let postype = get(a:args, 'postype', 'cursor')
  let result = {}
  let pkg = go#package#ImportPath()
  " this is important, check it!
  if pkg == -1 && needs_scope
    return {'err': "current directory is not inside of a valid GOPATH"}
  endif
  "return with a warning if the binary doesn't exist
  let bin_path = go#path#CheckBinPath("guru")
@ -30,9 +29,8 @@ function! s:guru_cmd(args) range abort
  endif
  " start constructing the command
-  let cmd = [bin_path]
+  let cmd = [bin_path, '-tags', go#config#BuildTags()]
  let filename = fnamemodify(expand("%"), ':p:gs?\\?/?')
  if &modified
    let result.stdin_content = go#util#archive()
    call add(cmd, "-modified")
@ -43,49 +41,30 @@ function! s:guru_cmd(args) range abort
    call add(cmd, "-json")
  endif
-  " check for any tags
+  let scopes = go#config#GuruScope()
-  if exists('g:go_build_tags')
+  if empty(scopes)
    let tags = get(g:, 'go_build_tags')
    call extend(cmd, ["-tags", tags])
    let result.tags = tags
  endif
    " some modes require scope to be defined (such as callers). For these we
    " choose a sensible setting, which is using the current file's package
  let scopes = []
    if needs_scope
      let pkg = go#package#ImportPath()
      if pkg == -1
        return {'err': "current directory is not inside of a valid GOPATH"}
      endif
      let scopes = [pkg]
    endif
  " check for any user defined scope setting. users can define the scope,
  " in package pattern form. examples:
  "  golang.org/x/tools/cmd/guru # a single package
  "  golang.org/x/tools/...      # all packages beneath dir
  "  ...                         # the entire workspace.
  if exists('g:go_guru_scope')
    " check that the setting is of type list
    if type(get(g:, 'go_guru_scope')) != type([])
      return {'err' : "go_guru_scope should of type list"}
  endif
-    let scopes = get(g:, 'go_guru_scope')
+  " Add the scope.
  endif
  " now add the scope to our command if there is any
  if !empty(scopes)
-    " strip trailing slashes for each path in scoped. bug:
+    " guru expect a comma-separated list of patterns.
    " https://github.com/golang/go/issues/14584
    let scopes = go#util#StripTrailingSlash(scopes)
    " create shell-safe entries of the list
    if !has("nvim") && !go#util#has_job() | let scopes = go#util#Shelllist(scopes) | endif
    " guru expect a comma-separated list of patterns, construct it
    let l:scope = join(scopes, ",")
    let result.scope = l:scope
    call extend(cmd, ["-scope", l:scope])
  endif
  if postype == 'balloon'
    let pos = printf("#%s", go#util#Offset(v:beval_lnum, v:beval_col))
  else
    let pos = printf("#%s", go#util#OffsetCursor())
    if selected != -1
      " means we have a range, get it
@ -93,9 +72,10 @@ function! s:guru_cmd(args) range abort
      let pos2 = go#util#Offset(line("'>"), col("'>"))
      let pos = printf("#%s,#%s", pos1, pos2)
    endif
  endif
-  let filename .= ':'.pos
+  let l:filename = fnamemodify(expand("%"), ':p:gs?\\?/?') . ':' . pos
-  call extend(cmd, [mode, filename])
+  call extend(cmd, [mode, l:filename])
  let result.cmd = cmd
  return result
@ -119,51 +99,22 @@ function! s:sync_guru(args) abort
    endif
  endif
  " run, forrest run!!!
-  let command = join(result.cmd, " ")
+  if has_key(l:result, 'stdin_content')
-  if has_key(result, 'stdin_content')
+    let [l:out, l:err] = go#util#Exec(l:result.cmd, l:result.stdin_content)
    let out = go#util#System(command, result.stdin_content)
  else
-    let out = go#util#System(command)
+    let [l:out, l:err] = go#util#Exec(l:result.cmd)
  endif
  if has_key(a:args, 'custom_parse')
-    call a:args.custom_parse(go#util#ShellError(), out, a:args.mode)
+    call a:args.custom_parse(l:err, l:out, a:args.mode)
  else
-    call s:parse_guru_output(go#util#ShellError(), out, a:args.mode)
+    call s:parse_guru_output(l:err, l:out, a:args.mode)
  endif
-  return out
+  return l:out
 endfunc
 " use vim or neovim job api as appropriate
 function! s:job_start(cmd, start_options) abort
  if go#util#has_job()
    return job_start(a:cmd, a:start_options)
  endif
  let opts = {'stdout_buffered': v:true, 'stderr_buffered': v:true}
  function opts.on_stdout(job_id, data, event) closure
    call a:start_options.callback(a:job_id, join(a:data, "\n"))
  endfunction
  function opts.on_stderr(job_id, data, event) closure
    call a:start_options.callback(a:job_id, join(a:data, "\n"))
  endfunction
  function opts.on_exit(job_id, exit_code, event) closure
    call a:start_options.exit_cb(a:job_id, a:exit_code)
    call a:start_options.close_cb(a:job_id)
  endfunction
  " use a shell for input redirection if needed
  let cmd = a:cmd
  if has_key(a:start_options, 'in_io') && a:start_options.in_io ==# 'file' && !empty(a:start_options.in_name)
    let cmd = ['/bin/sh', '-c', join(a:cmd, ' ') . ' <' . a:start_options.in_name]
  endif
  return jobstart(cmd, opts)
 endfunction
 " async_guru runs guru in async mode with the given arguments
 function! s:async_guru(args) abort
  let result = s:guru_cmd(a:args)
@ -172,92 +123,51 @@ function! s:async_guru(args) abort
    return
  endif
  if !has_key(a:args, 'disable_progress')
    if a:args.needs_scope
      call go#util#EchoProgress("analysing with scope " . result.scope .
            \ " (see ':help go-guru-scope' if this doesn't work)...")
    endif
  endif
  let state = {
        \ 'status_dir': expand('%:p:h'),
        \ 'statusline_type': printf("%s", a:args.mode),
        \ 'mode': a:args.mode,
        \ 'status': {},
        \ 'exitval': 0,
        \ 'closed': 0,
        \ 'exited': 0,
        \ 'messages': [],
        \ 'parse' : get(a:args, 'custom_parse', funcref("s:parse_guru_output"))
      \ }
-  function! s:callback(chan, msg) dict
+  " explicitly bind complete to state so that within it, self will
-    call add(self.messages, a:msg)
+  " always refer to state. See :help Partial for more information.
-  endfunction
+  let state.complete = function('s:complete', [], state)
-  function! s:exit_cb(job, exitval) dict
+  let opts = {
-    let self.exited = 1
+        \ 'statustype': get(a:args, 'statustype', a:args.mode),
-
+        \ 'for': '_',
-    let status = {
+        \ 'errorformat': "%f:%l.%c-%[%^:]%#:\ %m,%f:%l:%c:\ %m",
-          \ 'desc': 'last status',
+        \ 'complete': state.complete,
          \ 'type': self.statusline_type,
          \ 'state': "finished",
        \ }
-    if a:exitval
+  if has_key(a:args, 'disable_progress')
-      let self.exitval = a:exitval
+    let opts.statustype = ''
      let status.state = "failed"
  endif
-    call go#statusline#Update(self.status_dir, status)
+  let opts = go#job#Options(l:opts)
    if self.closed
      call self.complete()
    endif
  endfunction
  function! s:close_cb(ch) dict
    let self.closed = 1
    if self.exited
      call self.complete()
    endif
  endfunction
  function state.complete() dict
    let out = join(self.messages, "\n")
    call self.parse(self.exitval, out, self.mode)
  endfunction
  " explicitly bind the callbacks to state so that self within them always
  " refers to state. See :help Partial for more information.
  let start_options = {
        \ 'callback': function('s:callback', [], state),
        \ 'exit_cb': function('s:exit_cb', [], state),
        \ 'close_cb': function('s:close_cb', [], state)
       \ }
  if has_key(result, 'stdin_content')
    let l:tmpname = tempname()
    call writefile(split(result.stdin_content, "\n"), l:tmpname, "b")
-    let l:start_options.in_io = "file"
+    let l:opts.in_io = "file"
-    let l:start_options.in_name = l:tmpname
+    let l:opts.in_name = l:tmpname
  endif
-  call go#statusline#Update(state.status_dir, {
+  call go#job#Start(result.cmd, opts)
        \ 'desc': "current status",
        \ 'type': state.statusline_type,
        \ 'state': "analysing",
        \})
-  return s:job_start(result.cmd, start_options)
+  if a:args.needs_scope && go#config#EchoCommandInfo() && !has_key(a:args, 'disable_progress')
    call go#util#EchoProgress("analysing with scope " . result.scope .
          \ " (see ':help go-guru-scope' if this doesn't work)...")
  endif
 endfunc
 function! s:complete(job, exit_status, messages) dict abort
  let output = join(a:messages, "\n")
  call self.parse(a:exit_status, output, self.mode)
 endfunction
 " run_guru runs the given guru argument
 function! s:run_guru(args) abort
-  if has('nvim') || go#util#has_job()
+  if go#util#has_job()
    let res = s:async_guru(a:args)
  else
    let res = s:sync_guru(a:args)
@ -278,6 +188,18 @@ function! go#guru#Implements(selected) abort
  call s:run_guru(args)
 endfunction
 " Shows the set of possible objects to which a pointer may point.
 function! go#guru#PointsTo(selected) abort
  let l:args = {
        \ 'mode': 'pointsto',
        \ 'format': 'plain',
        \ 'selected': a:selected,
        \ 'needs_scope': 1,
        \ }
  call s:run_guru(l:args)
 endfunction
 " Report the possible constants, global variables, and concrete types that may
 " appear in a value of type error
 function! go#guru#Whicherrs(selected) abort
@ -309,7 +231,7 @@ function! go#guru#Describe(selected) abort
  call s:run_guru(args)
 endfunction
-function! go#guru#DescribeInfo() abort
+function! go#guru#DescribeInfo(showstatus) abort
  " json_encode() and friends are introduced with this patch (7.4.1304)
  " vim: https://groups.google.com/d/msg/vim_dev/vLupTNhQhZ8/cDGIk0JEDgAJ
  " nvim: https://github.com/neovim/neovim/pull/4131
@ -318,6 +240,18 @@ function! go#guru#DescribeInfo() abort
    return
  endif
  let args = {
        \ 'mode': 'describe',
        \ 'format': 'json',
        \ 'selected': -1,
        \ 'needs_scope': 0,
        \ 'custom_parse': function('s:info'),
        \ 'disable_progress': a:showstatus == 0,
        \ }
  call s:run_guru(args)
 endfunction
 function! s:info(exit_val, output, mode)
  if a:exit_val != 0
    return
@ -400,19 +334,7 @@ function! go#guru#DescribeInfo() abort
    return
  endif
-    call go#util#EchoInfo(info)
+  call go#util#ShowInfo(info)
  endfunction
  let args = {
        \ 'mode': 'describe',
        \ 'format': 'json',
        \ 'selected': -1,
        \ 'needs_scope': 0,
        \ 'custom_parse': function('s:info'),
        \ 'disable_progress': 1,
        \ }
  call s:run_guru(args)
 endfunction
 " Show possible targets of selected function call
@ -493,7 +415,7 @@ function! go#guru#Referrers(selected) abort
  call s:run_guru(args)
 endfunction
-function! go#guru#SameIds() abort
+function! go#guru#SameIds(showstatus) abort
  " we use matchaddpos() which was introduce with 7.4.330, be sure we have
  " it: http://ftp.vim.org/vim/patches/7.4/7.4.330
  if !exists("*matchaddpos")
@ -516,6 +438,9 @@ function! go#guru#SameIds() abort
        \ 'needs_scope': 0,
        \ 'custom_parse': function('s:same_ids_highlight'),
        \ }
  if !a:showstatus
    let args.disable_progress = 1
  endif
  call s:run_guru(args)
 endfunction
@ -524,20 +449,20 @@ function! s:same_ids_highlight(exit_val, output, mode) abort
  call go#guru#ClearSameIds() " run after calling guru to reduce flicker.
  if a:output[0] !=# '{'
-    if !get(g:, 'go_auto_sameids', 0)
+    if !go#config#AutoSameids()
      call go#util#EchoError(a:output)
    endif
    return
  endif
  let result = json_decode(a:output)
-  if type(result) != type({}) && !get(g:, 'go_auto_sameids', 0)
+  if type(result) != type({}) && !go#config#AutoSameids()
    call go#util#EchoError("malformed output from guru")
    return
  endif
  if !has_key(result, 'sameids')
-    if !get(g:, 'go_auto_sameids', 0)
+    if !go#config#AutoSameids()
      call go#util#EchoError("no same_ids founds for the given identifier")
    endif
    return
@ -563,12 +488,12 @@ function! s:same_ids_highlight(exit_val, output, mode) abort
    call matchaddpos('goSameId', [[str2nr(pos[-2]), str2nr(pos[-1]), str2nr(poslen)]])
  endfor
-  if get(g:, "go_auto_sameids", 0)
+  if go#config#AutoSameids()
    " re-apply SameIds at the current cursor position at the time the buffer
    " is redisplayed: e.g. :edit, :GoRename, etc.
    augroup vim-go-sameids
-      autocmd!
+      autocmd! * <buffer>
-      autocmd BufWinEnter <buffer> nested call go#guru#SameIds()
+      autocmd BufWinEnter <buffer> nested call go#guru#SameIds(0)
    augroup end
  endif
 endfunction
@ -592,7 +517,7 @@ function! go#guru#ClearSameIds() abort
  " remove the autocmds we defined
  augroup vim-go-sameids
-    autocmd!
+    autocmd! * <buffer>
  augroup end
  return 0
@ -600,20 +525,20 @@ endfunction
 function! go#guru#ToggleSameIds() abort
  if go#guru#ClearSameIds() != 0
-    call go#guru#SameIds()
+    call go#guru#SameIds(1)
  endif
 endfunction
-function! go#guru#AutoToogleSameIds() abort
+function! go#guru#AutoToggleSameIds() abort
-  if get(g:, "go_auto_sameids", 0)
+  if go#config#AutoSameids()
    call go#util#EchoProgress("sameids auto highlighting disabled")
    call go#guru#ClearSameIds()
-    let g:go_auto_sameids = 0
+    call go#config#SetAutoSameids(0)
    return
  endif
  call go#util#EchoSuccess("sameids auto highlighting enabled")
-  let g:go_auto_sameids = 1
+  call go#config#SetAutoSameids(1)
 endfunction
@ -648,22 +573,165 @@ endfun
 function! go#guru#Scope(...) abort
  if a:0
    let scope = a:000
    if a:0 == 1 && a:1 == '""'
-      unlet g:go_guru_scope
+      let scope = []
    endif
    call go#config#SetGuruScope(scope)
    if empty(scope)
      call go#util#EchoSuccess("guru scope is cleared")
    else
      let g:go_guru_scope = a:000
      call go#util#EchoSuccess("guru scope changed to: ". join(a:000, ","))
    endif
    return
  endif
-  if !exists('g:go_guru_scope')
+  let scope = go#config#GuruScope()
  if empty(scope)
    call go#util#EchoError("guru scope is not set")
  else
-    call go#util#EchoSuccess("current guru scope: ". join(g:go_guru_scope, ","))
+    call go#util#EchoSuccess("current guru scope: ". join(scope, ","))
  endif
 endfunction
 function! go#guru#DescribeBalloon() abort
  " don't even try if async isn't available.
  if !go#util#has_job()
    return
  endif
  " json_encode() and friends are introduced with this patch (7.4.1304)
  " vim: https://groups.google.com/d/msg/vim_dev/vLupTNhQhZ8/cDGIk0JEDgAJ
  " nvim: https://github.com/neovim/neovim/pull/4131
  if !exists("*json_decode")
    call go#util#EchoError("requires 'json_decode'. Update your Vim/Neovim version.")
    return
  endif
  " change the active window to the window where the cursor is.
  let l:winid = win_getid(winnr())
  call win_gotoid(v:beval_winid)
  let l:args = {
        \ 'mode': 'describe',
        \ 'format': 'json',
        \ 'selected': -1,
        \ 'needs_scope': 0,
        \ 'custom_parse': function('s:describe_balloon'),
        \ 'disable_progress': 1,
        \ 'postype': 'balloon',
        \ }
  call s:async_guru(args)
  " make the starting window active again
  call win_gotoid(l:winid)
  return ''
 endfunction
 function! s:describe_balloon(exit_val, output, mode)
  if a:exit_val != 0
    return
  endif
  if a:output[0] !=# '{'
    return
  endif
  if empty(a:output) || type(a:output) != type("")
    return
  endif
  let l:result = json_decode(a:output)
  if type(l:result) != type({})
    call go#util#EchoError(printf('malformed output from guru: %s', a:output))
    return
  endif
  let l:info = []
  if has_key(l:result, 'desc')
    if l:result['desc'] != 'identifier'
      let l:info = add(l:info, l:result['desc'])
    endif
  endif
  if has_key(l:result, 'detail')
    let l:detail = l:result['detail']
    " guru gives different information based on the detail mode. Let try to
    " extract the most useful information
    if l:detail == 'value'
      if !has_key(l:result, 'value')
        call go#util#EchoError('value key is missing. Please open a bug report on vim-go repo.')
        return
      endif
      let l:val = l:result['value']
      if !has_key(l:val, 'type')
        call go#util#EchoError('type key is missing (value.type). Please open a bug report on vim-go repo.')
        return
      endif
      let l:info = add(l:info, printf('type: %s', l:val['type']))
      if has_key(l:val, 'value')
        let l:info = add(l:info, printf('value: %s', l:val['value']))
      endif
    elseif l:detail == 'type'
      if !has_key(l:result, 'type')
        call go#util#EchoError('type key is missing. Please open a bug report on vim-go repo.')
        return
      endif
      let l:type = l:result['type']
      if !has_key(l:type, 'type')
        call go#util#EchoError('type key is missing (type.type). Please open a bug report on vim-go repo.')
        return
      endif
      let l:info = add(l:info, printf('type: %s', l:type['type']))
      if has_key(l:type, 'methods')
        let l:info = add(l:info, 'methods:')
        for l:m in l:type.methods
          let l:info = add(l:info, printf("\t%s", l:m['name']))
        endfor
      endif
    elseif l:detail == 'package'
      if !has_key(l:result, 'package')
        call go#util#EchoError('package key is missing. Please open a bug report on vim-go repo.')
        return
      endif
      let l:package = result['package']
      if !has_key(l:package, 'path')
        call go#util#EchoError('path key is missing (package.path). Please open a bug report on vim-go repo.')
        return
      endif
      let l:info = add(l:info, printf('package: %s', l:package["path"]))
    elseif l:detail == 'unknown'
      " the description is already included in l:info, and there's no other
      " information on unknowns.
    else
      call go#util#EchoError(printf('unknown detail mode (%s) found. Please open a bug report on vim-go repo', l:detail))
      return
    endif
  endif
  if has('balloon_eval')
    call balloon_show(join(l:info, "\n"))
    return
  endif
  call balloon_show(l:info)
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/guru_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/guru_test.vim
@ -0,0 +1,23 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function Test_GuruScope_Set() abort
  silent call go#guru#Scope("example.com/foo/bar")
  let actual = go#config#GuruScope()
  call assert_equal(["example.com/foo/bar"], actual)
  silent call go#guru#Scope('""')
  silent let actual = go#config#GuruScope()
  call assert_equal([], actual, "setting scope to empty string should clear")
  if exists('g:go_guru_scope')
    unlet g:go_guru_scope
  endif
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/highlight_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/highlight_test.vim
@ -0,0 +1,105 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function! Test_gomodVersion_highlight() abort
  try
    syntax on
    let l:dir = gotest#write_file('gomodtest/go.mod', [
          \ 'module github.com/fatih/vim-go',
          \ '',
          \ '\x1frequire (',
          \ '\tversion/simple v1.0.0',
          \ '\tversion/simple-pre-release v1.0.0-rc',
          \ '\tversion/simple-pre-release v1.0.0+meta',
          \ '\tversion/simple-pre-release v1.0.0-rc+meta',
          \ '\tversion/pseudo/premajor v1.0.0-20060102150405-0123456789abcdef',
          \ '\tversion/pseudo/prerelease v1.0.0-prerelease.0.20060102150405-0123456789abcdef',
          \ '\tversion/pseudo/prepatch v1.0.1-0.20060102150405-0123456789abcdef',
          \ '\tversion/simple/incompatible v2.0.0+incompatible',
          \ '\tversion/pseudo/premajor/incompatible v2.0.0-20060102150405-0123456789abcdef+incompatible',
          \ '\tversion/pseudo/prerelease/incompatible v2.0.0-prerelease.0.20060102150405-0123456789abcdef+incompatible',
          \ '\tversion/pseudo/prepatch/incompatible v2.0.1-0.20060102150405-0123456789abcdef+incompatible',
          \ ')'])
    let l:lineno = 4
    let l:lineclose = line('$')
    while l:lineno < l:lineclose
      let l:line = getline(l:lineno)
      let l:col = col([l:lineno, '$']) - 1
      let l:idx = len(l:line) - 1
      let l:from = stridx(l:line, ' ') + 1
      while l:idx >= l:from
        call cursor(l:lineno, l:col)
        let l:synname = synIDattr(synID(l:lineno, l:col, 1), 'name')
        let l:errlen = len(v:errors)
        call assert_equal('gomodVersion', l:synname, 'version on line ' . l:lineno)
        " continue at the next line if there was an error at this column;
        " there's no need to test each column once an error is detected.
        if l:errlen < len(v:errors)
          break
        endif
        let l:col -= 1
        let l:idx -= 1
      endwhile
      let l:lineno += 1
    endwhile
  finally
    call delete(l:dir, 'rf')
  endtry
 endfunc
 function! Test_gomodVersion_incompatible_highlight() abort
  try
    syntax on
    let l:dir = gotest#write_file('gomodtest/go.mod', [
          \ 'module github.com/fatih/vim-go',
          \ '',
          \ '\x1frequire (',
          \ '\tversion/invalid/premajor/incompatible v1.0.0-20060102150405-0123456789abcdef+incompatible',
          \ '\tversion/invalid/prerelease/incompatible v1.0.0-prerelease.0.20060102150405-0123456789abcdef+incompatible',
          \ '\tversion/invalid/prepatch/incompatible v1.0.1-0.20060102150405-0123456789abcdef+incompatible',
          \ ')'])
    let l:lineno = 4
    let l:lineclose = line('$')
    while l:lineno < l:lineclose
      let l:line = getline(l:lineno)
      let l:col = col([l:lineno, '$']) - 1
      let l:idx = len(l:line) - 1
      let l:from = stridx(l:line, '+')
      while l:idx >= l:from
        call cursor(l:lineno, l:col)
        let l:synname = synIDattr(synID(l:lineno, l:col, 1), 'name')
        let l:errlen = len(v:errors)
        call assert_notequal('gomodVersion', l:synname, 'version on line ' . l:lineno)
        " continue at the next line if there was an error at this column;
        " there's no need to test each column once an error is detected.
        if l:errlen < len(v:errors)
          break
        endif
        let l:col -= 1
        let l:idx -= 1
      endwhile
      let l:lineno += 1
    endwhile
  finally
    call delete(l:dir, 'rf')
  endtry
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/iferr.vim
+++ b/pack/acp/start/vim-go/autoload/go/iferr.vim
@ -0,0 +1,26 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function! go#iferr#Generate()
  let [l:out, l:err] = go#util#Exec(['iferr',
        \ '-pos=' . go#util#OffsetCursor()], go#util#GetLines())
  if len(l:out) == 1
    return
  endif
  if getline('.') =~ '^\s*$'
    silent delete _
    silent normal! k
  endif
  let l:pos = getcurpos()
  call append(l:pos[1], split(l:out, "\n"))
  silent normal! j=2j
  call setpos('.', l:pos)
  silent normal! 4j
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/impl.vim
+++ b/pack/acp/start/vim-go/autoload/go/impl.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function! go#impl#Impl(...) abort
  let recv = ""
  let iface = ""
@ -101,13 +105,29 @@ function! s:root_dirs() abort
  return dirs
 endfunction
-function! s:go_packages(dirs) abort
+function! s:go_packages(dirs, arglead) abort
  let pkgs = []
-  for d in a:dirs
+  for dir in a:dirs
-    let pkg_root = expand(d . '/pkg/' . go#util#osarch())
+      " this may expand to multiple lines
-    call extend(pkgs, split(globpath(pkg_root, '**/*.a', 1), "\n"))
+      let scr_root = expand(dir . '/src/')
      for pkg in split(globpath(scr_root, a:arglead.'*'), "\n")
          if isdirectory(pkg)
              let pkg .= '/'
          elseif pkg !~ '\.a$'
              continue
          endif
          " without this the result can have duplicates in form of
          " 'encoding/json' and '/encoding/json/'
          let pkg = go#util#StripPathSep(pkg)
          " remove the scr root and keep the package in tact
          let pkg = substitute(pkg, scr_root, "", "")
          call add(pkgs, pkg)
      endfor
-  return map(pkgs, "fnamemodify(v:val, ':t:r')")
+  endfor
  return pkgs
 endfunction
 function! s:interface_list(pkg) abort
@ -124,17 +144,32 @@ endfunction
 " Complete package and interface for {interface}
 function! go#impl#Complete(arglead, cmdline, cursorpos) abort
  let words = split(a:cmdline, '\s\+', 1)
  if words[-1] ==# ''
-    return s:uniq(sort(s:go_packages(s:root_dirs())))
+    " if no words are given, just start completing the first package we found
-  elseif words[-1] =~# '^\h\w*$'
+    return s:uniq(sort(s:go_packages(s:root_dirs(), a:arglead)))
-    return s:uniq(sort(filter(s:go_packages(s:root_dirs()), 'stridx(v:val, words[-1]) == 0')))
+  elseif words[-1] =~# '^\(\h\w.*\.\%(\h\w*\)\=$\)\@!\S*$'
-  elseif words[-1] =~# '^\h\w*\.\%(\h\w*\)\=$'
+    " start matching go packages. It's negate match of the below match
-    let [pkg, interface] = split(words[-1], '\.', 1)
+    return s:uniq(sort(s:go_packages(s:root_dirs(), a:arglead)))
-    echomsg pkg
+  elseif words[-1] =~# '^\h\w.*\.\%(\h\w*\)\=$'
    " match the following, anything that could indicate an interface candidate
    " 
    "  io.
    "  io.Wr
    "  github.com/fatih/color.
    "  github.com/fatih/color.U
    "  github.com/fatih/color.Un
    let splitted = split(words[-1], '\.', 1)
    let pkg = join(splitted[:-2], '.')
    let interface = splitted[-1]
    return s:uniq(sort(filter(s:interface_list(pkg), 'v:val =~? words[-1]')))
  else
    return []
  endif
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/impl_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/impl_test.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! Test_impl() abort
  try
    let l:tmp = gotest#write_file('a/a.go', [
@ -35,3 +39,9 @@ func! Test_impl_get() abort
    call delete(l:tmp, 'rf')
  endtry
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/import.vim
+++ b/pack/acp/start/vim-go/autoload/go/import.vim
@ -4,6 +4,11 @@
 "
 " Check out the docs for more information at /doc/vim-go.txt
 "
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function! go#import#SwitchImport(enabled, localname, path, bang) abort
  let view = winsaveview()
  let path = substitute(a:path, '^\s*\(.\{-}\)\s*$', '\1', '')
@ -27,8 +32,8 @@ function! go#import#SwitchImport(enabled, localname, path, bang) abort
  endif
  if a:bang == "!"
-    let out = go#util#System("go get -u -v ".shellescape(path))
+    let [l:out, l:err] = go#util#Exec(['go', 'get', '-u', '-v', path])
-    if go#util#ShellError() != 0
+    if err != 0
      call s:Error("Can't find import: " . path . ":" . out)
    endif
  endif
@ -65,6 +70,9 @@ function! go#import#SwitchImport(enabled, localname, path, bang) abort
      let packageline = line
      let appendline = line
    elseif linestr =~# '^import\s\+(\+)'
      let appendline = line
      let appendstr = qlocalpath
    elseif linestr =~# '^import\s\+('
      let appendstr = qlocalpath
      let indentstr = 1
@ -161,8 +169,16 @@ function! go#import#SwitchImport(enabled, localname, path, bang) abort
        let linesdelta += 3
        let appendstr = qlocalpath
        let indentstr = 1
      endif
        call append(appendline, appendstr)
      elseif getline(appendline) =~# '^import\s\+(\+)'
        call setline(appendline, 'import (')
        call append(appendline + 0, appendstr)
        call append(appendline + 1, ')')
        let linesdelta -= 1
        let indentstr = 1
      else
        call append(appendline, appendstr)
      endif
      execute appendline + 1
      if indentstr
        execute 'normal! >>'
@ -209,5 +225,8 @@ function! s:Error(s) abort
  echohl Error | echo a:s | echohl None
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/indent_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/indent_test.vim
@ -0,0 +1,72 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! Test_indent_raw_string() abort
  " The goRawString discovery requires that syntax be enabled.
  syntax on
  try
    let l:dir= gotest#write_file('indent/indent.go', [
          \ 'package main',
          \ '',
          \ 'import "fmt"',
          \ '',
          \ 'func main() {',
          \	"\t\x1fconst msg = `",
          \ '`',
          \ '\tfmt.Println(msg)',
          \ '}'])
    silent execute "normal o" . "not indented\<Esc>"
    let l:indent = indent(line('.'))
    call assert_equal(0, l:indent)
  finally
    call delete(l:dir, 'rf')
  endtry
  try
    let l:dir= gotest#write_file('indent/indent.go', [
          \ 'package main',
          \ '',
          \ 'import "fmt"',
          \ '',
          \ 'func main() {',
          \	"\t\x1fmsg := `",
          \ '`',
          \ '\tfmt.Println(msg)',
          \ '}'])
    silent execute "normal o" . "not indented\<Esc>"
    let l:indent = indent(line('.'))
    call assert_equal(0, l:indent)
  finally
    call delete(l:dir, 'rf')
  endtry
  try
    let l:dir= gotest#write_file('indent/indent.go', [
          \ 'package main',
          \ '',
          \ 'import "fmt"',
          \ '',
          \ 'func main() {',
          \	"\tconst msg = `",
          \ "\t\x1findented",
          \ '`',
          \ '\tfmt.Println(msg)',
          \ '}'])
    silent execute "normal o" . "indented\<Esc>"
    let l:indent = indent(line('.'))
    call assert_equal(shiftwidth(), l:indent)
  finally
    call delete(l:dir, 'rf')
  endtry
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/issue.vim
+++ b/pack/acp/start/vim-go/autoload/go/issue.vim
@ -0,0 +1,42 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 let s:templatepath = go#util#Join(expand('<sfile>:p:h:h:h'), '.github', 'ISSUE_TEMPLATE.md')
 function! go#issue#New() abort
  let body = go#uri#Encode(s:issuebody())
  let url = "https://github.com/fatih/vim-go/issues/new?body=" . l:body
  call go#util#OpenBrowser(l:url)
 endfunction
 function! s:issuebody() abort
  let lines = readfile(s:templatepath)
  let rtrimpat = '[[:space:]]\+$'
  let body = []
  for l in lines
    let body = add(body, l)
    if l =~ '^\* Vim version'
      redir => out
        silent version
      redir END
      let body = extend(body, split(out, "\n")[0:2])
    elseif l =~ '^\* Go version'
      let [out, err] = go#util#Exec(['go', 'version'])
      let body = add(body, substitute(l:out, rtrimpat, '', ''))
    elseif l =~ '^\* Go environment'
      let [out, err] = go#util#Exec(['go', 'env'])
      let body = add(body, substitute(l:out, rtrimpat, '', ''))
    endif
  endfor
  return join(body, "\n")
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/job.vim
+++ b/pack/acp/start/vim-go/autoload/go/job.vim
@ -1,24 +1,46 @@
-" Spawn returns callbacks to be used with job_start. It is abstracted to be
+" don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 " Spawn starts an asynchronous job. See the description of go#job#Options to
 " understand the args parameter.
 "
 " Spawn returns a job.
 function! go#job#Spawn(cmd, args)
  let l:options = go#job#Options(a:args)
  return go#job#Start(a:cmd, l:options)
 endfunction
 " Options returns callbacks to be used with job_start. It is abstracted to be
 " used with various go commands, such as build, test, install, etc.. This
 " allows us to avoid writing the same callback over and over for some
-" commands. It's fully customizable so each command can change it to it's own
+" commands. It's fully customizable so each command can change it to its own
 " logic.
 "
 " args is a dictionary with the these keys:
 "   'cmd':
 "     The value to pass to job_start().
 "   'bang':
 "     Set to 0 to jump to the first error in the error list.
 "     Defaults to 0.
 "   'statustype':
 "     The status type to use when updating the status.
 "     See statusline.vim.
 "   'for':
 "     The g:go_list_type_command key to use to get the error list type to use.
 "     Errors will not be handled when the value is '_'.
 "     Defaults to '_job'
 "   'errorformat':
 "     The errorformat string to use when parsing errors. Defaults to
 "     &errorformat.
 "     See :help 'errorformat'.
 "   'complete':
 "     A function to call after the job exits and the channel is closed. The
 "     function will be passed three arguments: the job, its exit code, and the
-"     list of messages received from the channel. The default value will
+"     list of messages received from the channel. The default is a no-op. A
-"     process the messages and manage the error list after the job exits and
+"     custom value can modify the messages before they are processed by the
-"     the channel is closed.
+"     returned exit_cb and close_cb callbacks. When the function is called,
 "     the current window will be the window that was hosting the buffer when
 "     the job was started. After it returns, the current window will be
 "     restored to what it was before the function was called.
 " The return value is a dictionary with these keys:
 "   'callback':
@ -30,22 +52,30 @@
 "   'close_cb':
 "     A function suitable to be passed as a job close_cb handler. See
 "     job-close_cb.
-function go#job#Spawn(args)
+"   'cwd':
 "     The path to the directory which contains the current buffer. The
 "     callbacks are configured to expect this directory is the working
 "     directory for the job; it should not be modified by callers.
 function! go#job#Options(args)
  let cbs = {}
  let state = {
-        \ 'winnr': winnr(),
+        \ 'winid': win_getid(winnr()),
        \ 'dir': getcwd(),
        \ 'jobdir': fnameescape(expand("%:p:h")),
        \ 'messages': [],
        \ 'args': a:args.cmd,
        \ 'bang': 0,
        \ 'for': "_job",
        \ 'exited': 0,
        \ 'exit_status': 0,
        \ 'closed': 0,
-        \ 'errorformat': &errorformat
+        \ 'errorformat': &errorformat,
        \ 'statustype' : ''
      \ }
  if has("patch-8.0.0902") || has('nvim')
    let cbs.cwd = state.jobdir
  endif
  if has_key(a:args, 'bang')
    let state.bang = a:args.bang
  endif
@ -54,90 +84,139 @@ function go#job#Spawn(args)
    let state.for = a:args.for
  endif
-  " do nothing in state.complete by default.
+  if has_key(a:args, 'statustype')
    let state.statustype = a:args.statustype
  endif
  if has_key(a:args, 'errorformat')
    let state.errorformat = a:args.errorformat
  endif
  function state.complete(job, exit_status, data)
    if has_key(self, 'custom_complete')
      let l:winid = win_getid(winnr())
      " Always set the active window to the window that was active when the job
      " was started. Among other things, this makes sure that the correct
      " window's location list will be populated when the list type is
      " 'location' and the user has moved windows since starting the job.
      call win_gotoid(self.winid)
      call self.custom_complete(a:job, a:exit_status, a:data)
      call win_gotoid(l:winid)
    endif
    call self.show_errors(a:job, a:exit_status, a:data)
  endfunction
  function state.show_status(job, exit_status) dict
    if self.statustype == ''
      return
    endif
    if go#config#EchoCommandInfo()
      let prefix = '[' . self.statustype . '] '
      if a:exit_status == 0
        call go#util#EchoSuccess(prefix . "SUCCESS")
      else
        call go#util#EchoError(prefix . "FAIL")
      endif
    endif
    let status = {
          \ 'desc': 'last status',
          \ 'type': self.statustype,
          \ 'state': "success",
          \ }
    if a:exit_status
      let status.state = "failed"
    endif
    if has_key(self, 'started_at')
      let elapsed_time = reltimestr(reltime(self.started_at))
      " strip whitespace
      let elapsed_time = substitute(elapsed_time, '^\s*\(.\{-}\)\s*$', '\1', '')
      let status.state .= printf(" (%ss)", elapsed_time)
    endif
    call go#statusline#Update(self.jobdir, status)
  endfunction
  if has_key(a:args, 'complete')
-    let state.complete = a:args.complete
+    let state.custom_complete = a:args.complete
  endif
-  function! s:callback(chan, msg) dict
+  " explicitly bind _start to state so that within it, self will
-    call add(self.messages, a:msg)
+  " always refer to state. See :help Partial for more information.
-  endfunction
+  "
  " _start is intended only for internal use and should not be referenced
  " outside of this file.
  let cbs._start = function('s:start', [''], state)
  " explicitly bind callback to state so that within it, self will
  " always refer to state. See :help Partial for more information.
  let cbs.callback = function('s:callback', [], state)
  function! s:exit_cb(job, exitval) dict
    let self.exit_status = a:exitval
    let self.exited = 1
    if get(g:, 'go_echo_command_info', 1)
      if a:exitval == 0
        call go#util#EchoSuccess("SUCCESS")
      else
        call go#util#EchoError("FAILED")
      endif
    endif
    if self.closed
      call self.complete(a:job, self.exit_status, self.messages)
      call self.show_errors(a:job, self.exit_status, self.messages)
    endif
  endfunction
  " explicitly bind exit_cb to state so that within it, self will always refer
  " to state. See :help Partial for more information.
  let cbs.exit_cb = function('s:exit_cb', [], state)
  function! s:close_cb(ch) dict
    let self.closed = 1
    if self.exited
      let job = ch_getjob(a:ch)
      call self.complete(job, self.exit_status, self.messages)
      call self.show_errors(job, self.exit_status, self.messages)
    endif
  endfunction
  " explicitly bind close_cb to state so that within it, self will
  " always refer to state. See :help Partial for more information.
  let cbs.close_cb = function('s:close_cb', [], state)
  function state.show_errors(job, exit_status, data)
    if self.for == '_'
      return
    endif
    let l:winid = win_getid(winnr())
    " Always set the active window to the window that was active when the job
    " was started. Among other things, this makes sure that the correct
    " window's location list will be populated when the list type is
    " 'location' and the user has moved windows since starting the job.
    call win_gotoid(self.winid)
    let l:listtype = go#list#Type(self.for)
    if a:exit_status == 0
      call go#list#Clean(l:listtype)
      call win_gotoid(l:winid)
      return
    endif
    let l:listtype = go#list#Type(self.for)
    if len(a:data) == 0
      call go#list#Clean(l:listtype)
      call win_gotoid(l:winid)
      return
    endif
    let out = join(self.messages, "\n")
-    let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
+    let l:cd = exists('*haslocaldir') && haslocaldir() ? 'lcd' : 'cd'
    try
      " parse the errors relative to self.jobdir
-      execute cd self.jobdir
+      execute l:cd self.jobdir
      call go#list#ParseFormat(l:listtype, self.errorformat, out, self.for)
      let errors = go#list#Get(l:listtype)
    finally
-      execute cd . fnameescape(self.dir)
+      execute l:cd fnameescape(self.dir)
    endtry
    if empty(errors)
      " failed to parse errors, output the original content
-      call go#util#EchoError(self.messages + [self.dir])
+      call go#util#EchoError([self.dir] + self.messages)
      call win_gotoid(l:winid)
      return
    endif
-    if self.winnr == winnr()
+    " only open the error window if user was still in the window from which
    " the job was started.
    if self.winid == l:winid
      call go#list#Window(l:listtype, len(errors))
-      if !self.bang
+      if self.bang
        call win_gotoid(l:winid)
      else
        call go#list#JumpToFirst(l:listtype)
      endif
    endif
@ -146,4 +225,311 @@ function go#job#Spawn(args)
  return cbs
 endfunction
 function! s:start(args) dict
  if go#config#EchoCommandInfo() && self.statustype != ""
    let prefix = '[' . self.statustype . '] '
    call go#util#EchoSuccess(prefix . "dispatched")
  endif
  if self.statustype != ''
    let status = {
          \ 'desc': 'current status',
          \ 'type': self.statustype,
          \ 'state': "started",
          \ }
    call go#statusline#Update(self.jobdir, status)
  endif
  let self.started_at = reltime()
 endfunction
 function! s:callback(chan, msg) dict
  call add(self.messages, a:msg)
 endfunction
 function! s:exit_cb(job, exitval) dict
  let self.exit_status = a:exitval
  let self.exited = 1
  call self.show_status(a:job, a:exitval)
  if self.closed || has('nvim')
    call self.complete(a:job, self.exit_status, self.messages)
  endif
 endfunction
 function! s:close_cb(ch) dict
  let self.closed = 1
  if self.exited
    let job = ch_getjob(a:ch)
    call self.complete(job, self.exit_status, self.messages)
  endif
 endfunction
 " go#job#Start runs a job. The options are expected to be the options
 " suitable for Vim8 jobs. When called from Neovim, Vim8 options will be
 " transformed to their Neovim equivalents.
 function! go#job#Start(cmd, options)
  let l:cd = exists('*haslocaldir') && haslocaldir() ? 'lcd' : 'cd'
  let l:options = copy(a:options)
  if has('nvim')
    let l:options = s:neooptions(l:options)
  endif
  " Verify that the working directory for the job actually exists. Return
  " early if the directory does not exist. This helps avoid errors when
  " working with plugins that use virtual files that don't actually exist on
  " the file system.
  let l:filedir = expand("%:p:h")
  if has_key(l:options, 'cwd') && !isdirectory(l:options.cwd)
      return
  elseif !isdirectory(l:filedir)
    return
  endif
  let l:manualcd = 0
  if !has_key(l:options, 'cwd')
    " pre start
    let l:manualcd = 1
    let dir = getcwd()
    execute l:cd fnameescape(filedir)
  elseif !(has("patch-8.0.0902") || has('nvim'))
    let l:manualcd = 1
    let l:dir = l:options.cwd
    execute l:cd fnameescape(l:dir)
    call remove(l:options, 'cwd')
  endif
  if has_key(l:options, '_start')
    call l:options._start()
    " remove _start to play nicely with vim (when vim encounters an unexpected
    " job option it reports an "E475: invalid argument" error).
    unlet l:options._start
  endif
  " noblock was added in 8.1.350; remove it if it's not supported.
  if has_key(l:options, 'noblock') && (has('nvim') || !has("patch-8.1.350"))
    call remove(l:options, 'noblock')
  endif
  if go#util#HasDebug('shell-commands')
    call go#util#EchoInfo('job command: ' . string(a:cmd))
  endif
  if has('nvim')
    let l:input = []
    if has_key(a:options, 'in_io') && a:options.in_io ==# 'file' && !empty(a:options.in_name)
      let l:input = readfile(a:options.in_name, "b")
    endif
    let job = jobstart(a:cmd, l:options)
    if len(l:input) > 0
      call chansend(job, l:input)
      " close stdin to signal that no more bytes will be sent.
      call chanclose(job, 'stdin')
    endif
  else
    let l:cmd = a:cmd
    if go#util#IsWin()
      let l:cmd = join(map(copy(a:cmd), function('s:winjobarg')), " ")
    endif
    let job = job_start(l:cmd, l:options)
  endif
  if l:manualcd
    " post start
    execute l:cd fnameescape(l:dir)
  endif
  return job
 endfunction
 " s:neooptions returns a dictionary of job options suitable for use by Neovim
 " based on a dictionary of job options suitable for Vim8.
 function! s:neooptions(options)
  let l:options = {}
  let l:options['stdout_buf'] = ''
  let l:options['stderr_buf'] = ''
  let l:err_mode = get(a:options, 'err_mode', get(a:options, 'mode', ''))
  let l:out_mode = get(a:options, 'out_mode', get(a:options, 'mode', ''))
  for key in keys(a:options)
      if key == 'cwd'
        let l:options['cwd'] = a:options['cwd']
        continue
      endif
      if key == 'callback'
        let l:options['callback'] = a:options['callback']
        if !has_key(a:options, 'out_cb')
          let l:options['on_stdout'] = function('s:callback2on_stdout', [l:out_mode], l:options)
        endif
        if !has_key(a:options, 'err_cb')
          let l:options['on_stderr'] = function('s:callback2on_stderr', [l:err_mode], l:options)
        endif
        continue
      endif
      if key == 'out_cb'
        let l:options['out_cb'] = a:options['out_cb']
        let l:options['on_stdout'] = function('s:on_stdout', [l:out_mode], l:options)
        continue
      endif
      if key == 'err_cb'
        let l:options['err_cb'] = a:options['err_cb']
        let l:options['on_stderr'] = function('s:on_stderr', [l:err_mode], l:options)
        continue
      endif
      if key == 'exit_cb'
        let l:options['exit_cb'] = a:options['exit_cb']
        let l:options['on_exit'] = function('s:on_exit', [], l:options)
        continue
      endif
      if key == 'close_cb'
        continue
      endif
      if key == 'stoponexit'
        if a:options['stoponexit'] == ''
          let l:options['detach'] = 1
        endif
        continue
      endif
  endfor
  return l:options
 endfunction
 function! s:callback2on_stdout(mode, ch, data, event) dict
  let self.stdout_buf = s:neocb(a:mode, a:ch, self.stdout_buf, a:data, self.callback)
 endfunction
 function! s:callback2on_stderr(mode, ch, data, event) dict
  let self.stderr_buf = s:neocb(a:mode, a:ch, self.stderr_buf, a:data, self.callback)
 endfunction
 function! s:on_stdout(mode, ch, data, event) dict
  let self.stdout_buf = s:neocb(a:mode, a:ch, self.stdout_buf, a:data, self.out_cb)
 endfunction
 function! s:on_stderr(mode, ch, data, event) dict
  let self.stderr_buf = s:neocb(a:mode, a:ch, self.stderr_buf, a:data, self.err_cb )
 endfunction
 function! s:on_exit(jobid, exitval, event) dict
  call self.exit_cb(a:jobid, a:exitval)
 endfunction
 function! go#job#Stop(job) abort
  if has('nvim')
    call jobstop(a:job)
    return
  endif
  call job_stop(a:job)
  call go#job#Wait(a:job)
  return
 endfunction
 function! go#job#Wait(job) abort
  if has('nvim')
    call jobwait([a:job])
    return
  endif
  while job_status(a:job) is# 'run'
    sleep 50m
  endwhile
 endfunction
 function! s:winjobarg(idx, val) abort
  if empty(a:val)
    return '""'
  endif
  return a:val
 endfunction
 function! s:neocb(mode, ch, buf, data, callback)
  " dealing with the channel lines of Neovim is awful. The docs (:help
  " channel-lines) say:
  "     stream event handlers may receive partial (incomplete) lines. For a
  "     given invocation of on_stdout etc, `a:data` is not guaranteed to end
  "     with a newline.
  "       - `abcdefg` may arrive as `['abc']`, `['defg']`.
  "       - `abc\nefg` may arrive as `['abc', '']`, `['efg']` or `['abc']`,
  "         `['','efg']`, or even `['ab']`, `['c','efg']`.
  "
  " Thankfully, though, this is explained a bit better in an issue:
  " https://github.com/neovim/neovim/issues/3555. Specifically in these two
  " comments:
  "     * https://github.com/neovim/neovim/issues/3555#issuecomment-152290804
  "     * https://github.com/neovim/neovim/issues/3555#issuecomment-152588749
  "
  " The key is
  "     Every item in the list passed to job control callbacks represents a
  "     string after a newline(Except the first, of course). If the program
  "     outputs: "hello\nworld" the corresponding list is ["hello", "world"].
  "     If the program outputs "hello\nworld\n", the corresponding list is
  "     ["hello", "world", ""]. In other words, you can always determine if
  "     the last line received is complete or not.
  " and
  "     for every list you receive in a callback, all items except the first
  "     represent newlines.
  let l:buf = ''
  " A single empty string means EOF was reached. The first item will never be
  " an empty string except for when it's the only item and is signaling that
  " EOF was reached.
  if len(a:data) == 1 && a:data[0] == ''
    " when there's nothing buffered, return early so that an
    " erroneous message will not be added.
    if a:buf == ''
      return ''
    endif
    let l:data = [a:buf]
  else
    let l:data = copy(a:data)
    let l:data[0] = a:buf . l:data[0]
    " The last element may be a partial line; save it for next time.
    if a:mode != 'raw'
      let l:buf = l:data[-1]
      let l:data = l:data[:-2]
    endif
  endif
  let l:i = 0
  let l:last = len(l:data) - 1
  while l:i <= l:last
    let l:msg = l:data[l:i]
    if a:mode == 'raw' && l:i < l:last
      let l:msg = l:msg . "\n"
    endif
    call a:callback(a:ch, l:msg)
    let l:i += 1
  endwhile
  return l:buf
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/jobcontrol.vim
+++ b/pack/acp/start/vim-go/autoload/go/jobcontrol.vim
@ -1,190 +0,0 @@
 " s:jobs is a global reference to all jobs started with Spawn() or with the
 " internal function s:spawn
 let s:jobs = {}
 " s:handlers is a global event handlers for all jobs started with Spawn() or
 " with the internal function s:spawn
 let s:handlers = {}
 " Spawn is a wrapper around s:spawn. It can be executed by other files and
 " scripts if needed. Desc defines the description for printing the status
 " during the job execution (useful for statusline integration).
 function! go#jobcontrol#Spawn(bang, desc, for, args) abort
  " autowrite is not enabled for jobs
  call go#cmd#autowrite()
  let job = s:spawn(a:bang, a:desc, a:for, a:args)
  return job.id
 endfunction
 " AddHandler adds a on_exit callback handler and returns the id.
 function! go#jobcontrol#AddHandler(handler) abort
  let i = len(s:handlers)
  while has_key(s:handlers, string(i))
    let i += 1
    break
  endwhile
  let s:handlers[string(i)] = a:handler
  return string(i)
 endfunction
 " RemoveHandler removes a callback handler by id.
 function! go#jobcontrol#RemoveHandler(id) abort
  unlet s:handlers[a:id]
 endfunction
 " spawn spawns a go subcommand with the name and arguments with jobstart. Once a
 " job is started a reference will be stored inside s:jobs. The job is started
 " inside the current files folder.
 function! s:spawn(bang, desc, for, args) abort
  let status_type = a:args[0]
  let status_dir = expand('%:p:h')
  let started_at = reltime()
  call go#statusline#Update(status_dir, {
        \ 'desc': "current status",
        \ 'type': status_type,
        \ 'state': "started",
        \})
  let job = {
        \ 'desc': a:desc,
        \ 'bang': a:bang,
        \ 'winnr': winnr(),
        \ 'importpath': go#package#ImportPath(),
        \ 'state': "RUNNING",
        \ 'stderr' : [],
        \ 'stdout' : [],
        \ 'on_stdout': function('s:on_stdout'),
        \ 'on_stderr': function('s:on_stderr'),
        \ 'on_exit' : function('s:on_exit'),
        \ 'status_type' : status_type,
        \ 'status_dir' : status_dir,
        \ 'started_at' : started_at,
        \ 'for' : a:for,
        \ 'errorformat': &errorformat,
        \ }
  " execute go build in the files directory
  let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
  " cleanup previous jobs for this file
  for jb in values(s:jobs)
    if jb.importpath == job.importpath
      unlet s:jobs[jb.id]
    endif
  endfor
  let dir = getcwd()
  let jobdir = fnameescape(expand("%:p:h"))
  execute cd . jobdir
  " append the subcommand, such as 'build'
  let argv = ['go'] + a:args
  " run, forrest, run!
  let id = jobstart(argv, job)
  let job.id = id
  let job.dir = jobdir
  let s:jobs[id] = job
  execute cd . fnameescape(dir)
  return job
 endfunction
 " on_exit is the exit handler for jobstart(). It handles cleaning up the job
 " references and also displaying errors in the quickfix window collected by
 " on_stderr handler. If there are no errors and a quickfix window is open,
 " it'll be closed.
 function! s:on_exit(job_id, exit_status, event) dict abort
  let status = {
        \ 'desc': 'last status',
        \ 'type': self.status_type,
        \ 'state': "success",
        \ }
  if a:exit_status
    let status.state = "failed"
  endif
  let elapsed_time = reltimestr(reltime(self.started_at))
  " strip whitespace
  let elapsed_time = substitute(elapsed_time, '^\s*\(.\{-}\)\s*$', '\1', '')
  let status.state .= printf(" (%ss)", elapsed_time)
  call go#statusline#Update(self.status_dir, status)
  let std_combined = self.stderr + self.stdout
  let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
  let dir = getcwd()
  execute cd self.dir
  call s:callback_handlers_on_exit(s:jobs[a:job_id], a:exit_status, std_combined)
  let l:listtype = go#list#Type(self.for)
  if a:exit_status == 0
    call go#list#Clean(l:listtype)
    let self.state = "SUCCESS"
    if get(g:, 'go_echo_command_info', 1)
      call go#util#EchoSuccess("[" . self.status_type . "] SUCCESS")
    endif
    execute cd . fnameescape(dir)
    return
  endif
  let self.state = "FAILED"
  if get(g:, 'go_echo_command_info', 1)
    call go#util#EchoError("[" . self.status_type . "] FAILED")
  endif
  " parse the errors relative to self.jobdir
  call go#list#ParseFormat(l:listtype, self.errorformat, std_combined, self.for)
  let errors = go#list#Get(l:listtype)
  execute cd . fnameescape(dir)
  if !len(errors)
    " failed to parse errors, output the original content
    call go#util#EchoError(std_combined[0])
    return
  endif
  " if we are still in the same windows show the list
  if self.winnr == winnr()
    call go#list#Window(l:listtype, len(errors))
    if !empty(errors) && !self.bang
      call go#list#JumpToFirst(l:listtype)
    endif
  endif
 endfunction
 " callback_handlers_on_exit runs all handlers for job on exit event.
 function! s:callback_handlers_on_exit(job, exit_status, data) abort
  if empty(s:handlers)
    return
  endif
  for s:handler in values(s:handlers)
    call s:handler(a:job, a:exit_status, a:data)
  endfor
 endfunction
 " on_stdout is the stdout handler for jobstart(). It collects the output of
 " stderr and stores them to the jobs internal stdout list.
 function! s:on_stdout(job_id, data, event) dict abort
  call extend(self.stdout, a:data)
 endfunction
 " on_stderr is the stderr handler for jobstart(). It collects the output of
 " stderr and stores them to the jobs internal stderr list.
 function! s:on_stderr(job_id, data, event) dict abort
  call extend(self.stderr, a:data)
 endfunction
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/keyify.vim
+++ b/pack/acp/start/vim-go/autoload/go/keyify.vim
@ -1,20 +1,24 @@
-function! go#keyify#Keyify()
+" don't spam the user when Vim is started in Vi compatibility mode
-  let bin_path = go#path#CheckBinPath("keyify")
+let s:cpo_save = &cpo
-  let fname = fnamemodify(expand("%"), ':p:gs?\\?/?')
+set cpo&vim
-  if empty(bin_path) || !exists('*json_decode')
+function! go#keyify#Keyify()
  " Needs: https://github.com/dominikh/go-tools/pull/272
  "\ '-tags', go#config#BuildTags(),
  let l:cmd = ['keyify',
      \ '-json',
      \ printf('%s:#%s', fnamemodify(expand('%'), ':p:gs?\\?/?'), go#util#OffsetCursor())]
  let [l:out, l:err] = go#util#Exec(l:cmd)
  if l:err
    call go#util#EchoError("non-zero exit code: " . l:out)
    return
  endif
-
+  silent! let result = json_decode(l:out)
  " Get result of command as json, that contains `start`, `end` and `replacement`
  let command = printf("%s -json %s:#%s", go#util#Shellescape(bin_path),
    \ go#util#Shellescape(fname), go#util#OffsetCursor())
  let output = go#util#System(command)
  silent! let result = json_decode(output)
  " We want to output the error message in case the result isn't a JSON
  if type(result) != type({})
-    call go#util#EchoError(s:chomp(output))
+    call go#util#EchoError(s:chomp(l:out))
    return
  endif
@ -53,4 +57,8 @@ function! s:chomp(string)
    return substitute(a:string, '\n\+$', '', '')
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/lint.vim
+++ b/pack/acp/start/vim-go/autoload/go/lint.vim
@ -1,62 +1,34 @@
-if !exists("g:go_metalinter_command")
+" don't spam the user when Vim is started in Vi compatibility mode
-  let g:go_metalinter_command = ""
+let s:cpo_save = &cpo
-endif
+set cpo&vim
-if !exists("g:go_metalinter_autosave_enabled")
+function! go#lint#Gometa(bang, autosave, ...) abort
  let g:go_metalinter_autosave_enabled = ['vet', 'golint']
 endif
 if !exists("g:go_metalinter_enabled")
  let g:go_metalinter_enabled = ['vet', 'golint', 'errcheck']
 endif
 if !exists("g:go_metalinter_disabled")
  let g:go_metalinter_disabled = []
 endif
 if !exists("g:go_golint_bin")
  let g:go_golint_bin = "golint"
 endif
 if !exists("g:go_errcheck_bin")
  let g:go_errcheck_bin = "errcheck"
 endif
 function! go#lint#Gometa(autosave, ...) abort
  if a:0 == 0
    let goargs = [expand('%:p:h')]
  else
    let goargs = a:000
  endif
-  let bin_path = go#path#CheckBinPath("gometalinter")
+  let l:metalinter = go#config#MetalinterCommand()
-  if empty(bin_path)
+
  if l:metalinter == 'gometalinter' || l:metalinter == 'golangci-lint'
    let cmd = s:metalintercmd(l:metalinter)
    if empty(cmd)
      return
    endif
  let cmd = [bin_path]
  let cmd += ["--disable-all"]
  if a:autosave || empty(g:go_metalinter_command)
    " linters
-    let linters = a:autosave ? g:go_metalinter_autosave_enabled : g:go_metalinter_enabled
+    let linters = a:autosave ? go#config#MetalinterAutosaveEnabled() : go#config#MetalinterEnabled()
    for linter in linters
      let cmd += ["--enable=".linter]
    endfor
-    for linter in g:go_metalinter_disabled
+    for linter in go#config#MetalinterDisabled()
      let cmd += ["--disable=".linter]
    endfor
    " gometalinter has a --tests flag to tell its linters whether to run
    " against tests. While not all of its linters respect this flag, for those
    " that do, it means if we don't pass --tests, the linter won't run against
    " test files. One example of a linter that will not run against tests if
    " we do not specify this flag is errcheck.
    let cmd += ["--tests"]
  else
    " the user wants something else, let us use it.
-    let cmd += split(g:go_metalinter_command, " ")
+    let cmd = split(go#config#MetalinterCommand(), " ")
  endif
  if a:autosave
@ -64,36 +36,43 @@ function! go#lint#Gometa(autosave, ...) abort
    " will be cleared
    redraw
    if l:metalinter == "gometalinter"
      " Include only messages for the active buffer for autosave.
-    let cmd += [printf('--include=^%s:.*$', fnamemodify(expand('%:p'), ":."))]
+      let include = [printf('--include=^%s:.*$', fnamemodify(expand('%:p'), ":."))]
      if go#util#has_job()
        let include = [printf('--include=^%s:.*$', expand('%:p:t'))]
      endif
      let cmd += include
    elseif l:metalinter == "golangci-lint"
      let goargs[0] = expand('%:p')
    endif
  endif
-  " gometalinter has a default deadline of 5 seconds.
+  " Call metalinter asynchronously.
-  "
+  let deadline = go#config#MetalinterDeadline()
-  " For async mode (s:lint_job), we want to override the default deadline only
+  if deadline != ''
  " if we have a deadline configured.
  "
  " For sync mode (go#util#System), always explicitly pass the 5 seconds
  " deadline if there is no other deadline configured. If a deadline is
  " configured, then use it.
  " Call gometalinter asynchronously.
  if go#util#has_job() && has('lambda')
    let deadline = get(g:, 'go_metalinter_deadline', 0)
    if deadline != 0
    let cmd += ["--deadline=" . deadline]
  endif
  let cmd += goargs
-    call s:lint_job({'cmd': cmd}, a:autosave)
+  if l:metalinter == "gometalinter"
-    return
+    " Gometalinter can output one of the two, so we look for both:
    "   <file>:<line>:<column>:<severity>: <message> (<linter>)
    "   <file>:<line>::<severity>: <message> (<linter>)
    " This can be defined by the following errorformat:
    let errformat = "%f:%l:%c:%t%*[^:]:\ %m,%f:%l::%t%*[^:]:\ %m"
  else
    " Golangci-lint can output the following:
    "   <file>:<line>:<column>: <message> (<linter>)
    " This can be defined by the following errorformat:
    let errformat = "%f:%l:%c:\ %m"
  endif
-  " We're calling gometalinter synchronously.
+  if go#util#has_job()
-  let cmd += ["--deadline=" . get(g:, 'go_metalinter_deadline', "5s")]
+    call s:lint_job({'cmd': cmd, 'statustype': l:metalinter, 'errformat': errformat}, a:bang, a:autosave)
-
+    return
-  let cmd += goargs
+  endif
  let [l:out, l:err] = go#util#Exec(cmd)
@ -107,48 +86,46 @@ function! go#lint#Gometa(autosave, ...) abort
    call go#list#Clean(l:listtype)
    echon "vim-go: " | echohl Function | echon "[metalinter] PASS" | echohl None
  else
-    " GoMetaLinter can output one of the two, so we look for both:
+    let l:winid = win_getid(winnr())
    "   <file>:<line>:[<column>]: <message> (<linter>)
    "   <file>:<line>:: <message> (<linter>)
    " This can be defined by the following errorformat:
    let errformat = "%f:%l:%c:%t%*[^:]:\ %m,%f:%l::%t%*[^:]:\ %m"
    " Parse and populate our location list
    call go#list#ParseFormat(l:listtype, errformat, split(out, "\n"), 'GoMetaLinter')
    let errors = go#list#Get(l:listtype)
    call go#list#Window(l:listtype, len(errors))
-    if !a:autosave
+    if a:autosave || a:bang
-      call go#list#JumpToFirst(l:listtype)
+      call win_gotoid(l:winid)
      return
    endif
    call go#list#JumpToFirst(l:listtype)
  endif
 endfunction
 " Golint calls 'golint' on the current directory. Any warnings are populated in
 " the location list
-function! go#lint#Golint(...) abort
+function! go#lint#Golint(bang, ...) abort
  let bin_path = go#path#CheckBinPath(g:go_golint_bin)
  if empty(bin_path)
    return
  endif
  let bin_path = go#util#Shellescape(bin_path)
  if a:0 == 0
-    let out = go#util#System(bin_path . " " . go#util#Shellescape(go#package#ImportPath()))
+    let [l:out, l:err] = go#util#Exec([go#config#GolintBin(), go#package#ImportPath()])
  else
-    let out = go#util#System(bin_path . " " . go#util#Shelljoin(a:000))
+    let [l:out, l:err] = go#util#Exec([go#config#GolintBin()] + a:000)
  endif
-  if empty(out)
+  if empty(l:out)
-    echon "vim-go: " | echohl Function | echon "[lint] PASS" | echohl None
+    call go#util#EchoSuccess('[lint] PASS')
    return
  endif
  let l:winid = win_getid(winnr())
  let l:listtype = go#list#Type("GoLint")
-  call go#list#Parse(l:listtype, out, "GoLint")
+  call go#list#Parse(l:listtype, l:out, "GoLint")
-  let errors = go#list#Get(l:listtype)
+  let l:errors = go#list#Get(l:listtype)
-  call go#list#Window(l:listtype, len(errors))
+  call go#list#Window(l:listtype, len(l:errors))
  if a:bang
    call win_gotoid(l:winid)
    return
  endif
  call go#list#JumpToFirst(l:listtype)
 endfunction
@ -156,202 +133,152 @@ endfunction
 " the location list
 function! go#lint#Vet(bang, ...) abort
  call go#cmd#autowrite()
-  echon "vim-go: " | echohl Identifier | echon "calling vet..." | echohl None
+
  if go#config#EchoCommandInfo()
    call go#util#EchoProgress('calling vet...')
  endif
  if a:0 == 0
-    let out = go#util#System('go vet ' . go#util#Shellescape(go#package#ImportPath()))
+    let [l:out, l:err] = go#util#Exec(['go', 'vet', go#package#ImportPath()])
  else
-    let out = go#util#System('go tool vet ' . go#util#Shelljoin(a:000))
+    let [l:out, l:err] = go#util#Exec(['go', 'tool', 'vet'] + a:000)
  endif
  let l:listtype = go#list#Type("GoVet")
-  if go#util#ShellError() != 0
+  if l:err != 0
    let l:winid = win_getid(winnr())
    let errorformat = "%-Gexit status %\\d%\\+," . &errorformat
    call go#list#ParseFormat(l:listtype, l:errorformat, out, "GoVet")
    let errors = go#list#Get(l:listtype)
    call go#list#Window(l:listtype, len(errors))
    if !empty(errors) && !a:bang
      call go#list#JumpToFirst(l:listtype)
    else
      call win_gotoid(l:winid)
    endif
    echon "vim-go: " | echohl ErrorMsg | echon "[vet] FAIL" | echohl None
  else
    call go#list#Clean(l:listtype)
-    redraw | echon "vim-go: " | echohl Function | echon "[vet] PASS" | echohl None
+    call go#util#EchoSuccess('[vet] PASS')
  endif
 endfunction
 " ErrCheck calls 'errcheck' for the given packages. Any warnings are populated in
 " the location list
-function! go#lint#Errcheck(...) abort
+function! go#lint#Errcheck(bang, ...) abort
  if a:0 == 0
-    let import_path = go#package#ImportPath()
+    let l:import_path = go#package#ImportPath()
    if import_path == -1
-      echohl Error | echomsg "vim-go: package is not inside GOPATH src" | echohl None
+      call go#util#EchoError('package is not inside GOPATH src')
      return
    endif
  else
-    let import_path = go#util#Shelljoin(a:000)
+    let l:import_path = join(a:000, ' ')
  endif
-  let bin_path = go#path#CheckBinPath(g:go_errcheck_bin)
+  call go#util#EchoProgress('[errcheck] analysing ...')
  if empty(bin_path)
    return
  endif
  echon "vim-go: " | echohl Identifier | echon "errcheck analysing ..." | echohl None
  redraw
-  let command =  go#util#Shellescape(bin_path) . ' -abspath ' . import_path
+  let [l:out, l:err] = go#util#Exec([go#config#ErrcheckBin(), '-abspath', l:import_path])
  let out = go#tool#ExecuteInDir(command)
  let l:listtype = go#list#Type("GoErrCheck")
-  if go#util#ShellError() != 0
+  if l:err != 0
    let l:winid = win_getid(winnr())
    let errformat = "%f:%l:%c:\ %m, %f:%l:%c\ %#%m"
    " Parse and populate our location list
    call go#list#ParseFormat(l:listtype, errformat, split(out, "\n"), 'Errcheck')
-    let errors = go#list#Get(l:listtype)
+    let l:errors = go#list#Get(l:listtype)
-    if empty(errors)
+    if empty(l:errors)
-      echohl Error | echomsg "GoErrCheck returned error" | echohl None
+      call go#util#EchoError(l:out)
      echo out
      return
    endif
    if !empty(errors)
      echohl Error | echomsg "GoErrCheck found errors" | echohl None
      call go#list#Populate(l:listtype, errors, 'Errcheck')
      call go#list#Window(l:listtype, len(errors))
-      if !empty(errors)
+      if !a:bang
        call go#list#JumpToFirst(l:listtype)
      else
        call win_gotoid(l:winid)
      endif
    endif
  else
    call go#list#Clean(l:listtype)
-    echon "vim-go: " | echohl Function | echon "[errcheck] PASS" | echohl None
+    call go#util#EchoSuccess('[errcheck] PASS')
  endif
 endfunction
 function! go#lint#ToggleMetaLinterAutoSave() abort
-  if get(g:, "go_metalinter_autosave", 0)
+  if go#config#MetalinterAutosave()
-    let g:go_metalinter_autosave = 0
+    call go#config#SetMetalinterAutosave(0)
    call go#util#EchoProgress("auto metalinter disabled")
    return
  end
-  let g:go_metalinter_autosave = 1
+  call go#config#SetMetalinterAutosave(1)
  call go#util#EchoProgress("auto metalinter enabled")
 endfunction
-function! s:lint_job(args, autosave)
+function! s:lint_job(args, bang, autosave)
-  let state = {
+  let l:opts = {
-        \ 'status_dir': expand('%:p:h'),
+        \ 'statustype': a:args.statustype,
-        \ 'started_at': reltime(),
+        \ 'errorformat': a:args.errformat,
-        \ 'messages': [],
+        \ 'for': "GoMetaLinter",
-        \ 'exited': 0,
+        \ 'bang': a:bang,
        \ 'closed': 0,
        \ 'exit_status': 0,
        \ 'winnr': winnr(),
        \ 'autosave': a:autosave
        \ }
-  call go#statusline#Update(state.status_dir, {
+  if a:autosave
-        \ 'desc': "current status",
+    let l:opts.for = "GoMetaLinterAutoSave"
-        \ 'type': "gometalinter",
+  endif
        \ 'state': "analysing",
        \})
  " autowrite is not enabled for jobs
  call go#cmd#autowrite()
-  if a:autosave
+  call go#job#Spawn(a:args.cmd, l:opts)
    let state.listtype = go#list#Type("GoMetaLinterAutoSave")
  else
    let state.listtype = go#list#Type("GoMetaLinter")
  endif
  function! s:callback(chan, msg) dict closure
    call add(self.messages, a:msg)
 endfunction
-  function! s:exit_cb(job, exitval) dict
+function! s:metalintercmd(metalinter)
-    let self.exited = 1
+  let l:cmd = []
-    let self.exit_status = a:exitval
+  let bin_path = go#path#CheckBinPath(a:metalinter)
-
+  if !empty(bin_path)
-    let status = {
+    if a:metalinter == "gometalinter"
-          \ 'desc': 'last status',
+      let l:cmd = s:gometalintercmd(bin_path)
-          \ 'type': "gometaliner",
+    elseif a:metalinter == "golangci-lint"
-          \ 'state': "finished",
+      let l:cmd = s:golangcilintcmd(bin_path)
-          \ }
+    endif
    if a:exitval
      let status.state = "failed"
  endif
-    let elapsed_time = reltimestr(reltime(self.started_at))
+  return cmd
    " strip whitespace
    let elapsed_time = substitute(elapsed_time, '^\s*\(.\{-}\)\s*$', '\1', '')
    let status.state .= printf(" (%ss)", elapsed_time)
    call go#statusline#Update(self.status_dir, status)
    if self.closed
      call self.show_errors()
    endif
 endfunction
-  function! s:close_cb(ch) dict
+function! s:gometalintercmd(bin_path)
-    let self.closed = 1
+  let cmd = [a:bin_path]
  let cmd += ["--disable-all"]
-    if self.exited
+  " gometalinter has a --tests flag to tell its linters whether to run
-      call self.show_errors()
+  " against tests. While not all of its linters respect this flag, for those
-    endif
+  " that do, it means if we don't pass --tests, the linter won't run against
  " test files. One example of a linter that will not run against tests if
  " we do not specify this flag is errcheck.
  let cmd += ["--tests"]
  return cmd
 endfunction
-
+function! s:golangcilintcmd(bin_path)
-  function state.show_errors()
+  let cmd = [a:bin_path]
-    let l:winnr = winnr()
+  let cmd += ["run"]
-
+  let cmd += ["--print-issued-lines=false"]
-    " make sure the current window is the window from which gometalinter was
+  let cmd += ["--disable-all"]
-    " run when the listtype is locationlist so that the location list for the
+  " do not use the default exclude patterns, because doing so causes golint
-    " correct window will be populated.
+  " problems about missing doc strings to be ignored and other things that
-    if self.listtype == 'locationlist'
+  " golint identifies.
-      exe self.winnr . "wincmd w"
+  let cmd += ["--exclude-use-default=false"]
-    endif
+  return cmd
    let l:errorformat = '%f:%l:%c:%t%*[^:]:\ %m,%f:%l::%t%*[^:]:\ %m'
    call go#list#ParseFormat(self.listtype, l:errorformat, self.messages, 'GoMetaLinter')
    let errors = go#list#Get(self.listtype)
    call go#list#Window(self.listtype, len(errors))
    " move to the window that was active before processing the errors, because
    " the user may have moved around within the window or even moved to a
    " different window since saving. Moving back to current window as of the
    " start of this function avoids the perception that the quickfix window
    " steals focus when linting takes a while.
    if self.autosave
      exe l:winnr . "wincmd w"
    endif
    if get(g:, 'go_echo_command_info', 1)
      call go#util#EchoSuccess("linting finished")
    endif
 endfunction
-  " explicitly bind the callbacks to state so that self within them always
+" restore Vi compatibility settings
-  " refers to state. See :help Partial for more information.
+let &cpo = s:cpo_save
-  let start_options = {
+unlet s:cpo_save
        \ 'callback': funcref("s:callback", [], state),
        \ 'exit_cb': funcref("s:exit_cb", [], state),
        \ 'close_cb': funcref("s:close_cb", [], state),
        \ }
  call job_start(a:args.cmd, start_options)
  if get(g:, 'go_echo_command_info', 1)
    call go#util#EchoProgress("linting started ...")
  endif
 endfunction
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/lint_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/lint_test.vim
@ -1,7 +1,21 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! Test_Gometa() abort
  call s:gometa('gometaliner')
 endfunc
 func! Test_GometaGolangciLint() abort
  call s:gometa('golangci-lint')
 endfunc
 func! s:gometa(metalinter) abort
  let $GOPATH = fnameescape(fnamemodify(getcwd(), ':p')) . 'test-fixtures/lint'
  silent exe 'e ' . $GOPATH . '/src/lint/lint.go'
  try
    let g:go_metalinter_comand = a:metalinter
    let expected = [
          \ {'lnum': 5, 'bufnr': bufnr('%')+1, 'col': 1, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': 'w', 'pattern': '', 'text': 'exported function MissingFooDoc should have comment or be unexported (golint)'}
        \ ]
@ -9,17 +23,9 @@ func! Test_Gometa() abort
    " clear the quickfix lists
    call setqflist([], 'r')
  " call go#lint#ToggleMetaLinterAutoSave from lint.vim so that the file will
  " be autoloaded and the default for g:go_metalinter_enabled will be set so
  " we can capture it to restore it after the test is run.
  call go#lint#ToggleMetaLinterAutoSave()
  " And restore it back to its previous value
  call go#lint#ToggleMetaLinterAutoSave()
  let orig_go_metalinter_enabled = g:go_metalinter_enabled
    let g:go_metalinter_enabled = ['golint']
-  call go#lint#Gometa(0, $GOPATH . '/src/foo')
+    call go#lint#Gometa(0, 0, $GOPATH . '/src/foo')
    let actual = getqflist()
    let start = reltime()
@ -29,13 +35,25 @@ func! Test_Gometa() abort
    endwhile
    call gotest#assert_quickfix(actual, expected)
-  let g:go_metalinter_enabled = orig_go_metalinter_enabled
+  finally
      unlet g:go_metalinter_enabled
  endtry
 endfunc
 func! Test_GometaWithDisabled() abort
  call s:gometawithdisabled('gometalinter')
 endfunc
 func! Test_GometaWithDisabledGolangciLint() abort
  call s:gometawithdisabled('golangci-lint')
 endfunc
 func! s:gometawithdisabled(metalinter) abort
  let $GOPATH = fnameescape(fnamemodify(getcwd(), ':p')) . 'test-fixtures/lint'
  silent exe 'e ' . $GOPATH . '/src/lint/lint.go'
  try
    let g:go_metalinter_comand = a:metalinter
    let expected = [
          \ {'lnum': 5, 'bufnr': bufnr('%')+1, 'col': 1, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': 'w', 'pattern': '', 'text': 'exported function MissingFooDoc should have comment or be unexported (golint)'}
        \ ]
@ -43,17 +61,9 @@ func! Test_GometaWithDisabled() abort
    " clear the quickfix lists
    call setqflist([], 'r')
  " call go#lint#ToggleMetaLinterAutoSave from lint.vim so that the file will
  " be autoloaded and the default for g:go_metalinter_disabled will be set so
  " we can capture it to restore it after the test is run.
  call go#lint#ToggleMetaLinterAutoSave()
  " And restore it back to its previous value
  call go#lint#ToggleMetaLinterAutoSave()
  let orig_go_metalinter_disabled = g:go_metalinter_disabled
    let g:go_metalinter_disabled = ['vet']
-  call go#lint#Gometa(0, $GOPATH . '/src/foo')
+    call go#lint#Gometa(0, 0, $GOPATH . '/src/foo')
    let actual = getqflist()
    let start = reltime()
@ -63,13 +73,25 @@ func! Test_GometaWithDisabled() abort
    endwhile
    call gotest#assert_quickfix(actual, expected)
-  let g:go_metalinter_disabled = orig_go_metalinter_disabled
+  finally
    unlet g:go_metalinter_disabled
  endtry
 endfunc
 func! Test_GometaAutoSave() abort
  call s:gometaautosave('gometalinter')
 endfunc
 func! Test_GometaAutoSaveGolangciLint() abort
  call s:gometaautosave('golangci-lint')
 endfunc
 func! s:gometaautosave(metalinter) abort
  let $GOPATH = fnameescape(fnamemodify(getcwd(), ':p')) . 'test-fixtures/lint'
  silent exe 'e ' . $GOPATH . '/src/lint/lint.go'
  try
    let g:go_metalinter_comand = a:metalinter
    let expected = [
          \ {'lnum': 5, 'bufnr': bufnr('%'), 'col': 1, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': 'w', 'pattern': '', 'text': 'exported function MissingDoc should have comment or be unexported (golint)'}
        \ ]
@ -79,17 +101,9 @@ func! Test_GometaAutoSave() abort
    " clear the location lists
    call setloclist(l:winnr, [], 'r')
  " call go#lint#ToggleMetaLinterAutoSave from lint.vim so that the file will
  " be autoloaded and the default for g:go_metalinter_autosave_enabled will be
  " set so we can capture it to restore it after the test is run.
  call go#lint#ToggleMetaLinterAutoSave()
  " And restore it back to its previous value
  call go#lint#ToggleMetaLinterAutoSave()
  let orig_go_metalinter_autosave_enabled = g:go_metalinter_autosave_enabled
    let g:go_metalinter_autosave_enabled = ['golint']
-  call go#lint#Gometa(1)
+    call go#lint#Gometa(0, 1)
    let actual = getloclist(l:winnr)
    let start = reltime()
@ -99,16 +113,19 @@ func! Test_GometaAutoSave() abort
    endwhile
    call gotest#assert_quickfix(actual, expected)
-  let g:go_metalinter_autosave_enabled = orig_go_metalinter_autosave_enabled
+  finally
    unlet g:go_metalinter_autosave_enabled
  endtry
 endfunc
-func! Test_Vet()
+func! Test_Vet() abort
  let $GOPATH = fnameescape(fnamemodify(getcwd(), ':p')) . 'test-fixtures/lint'
  silent exe 'e ' . $GOPATH . '/src/vet/vet.go'
  compiler go
  let expected = [
-        \ {'lnum': 7, 'bufnr': bufnr('%'), 'col': 0, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': 'arg str for printf verb %d of wrong type: string'}
+        \ {'lnum': 7, 'bufnr': bufnr('%'), 'col': 2, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '',
        \ 'text': 'Printf format %d has arg str of wrong type string'}
      \ ]
  let winnr = winnr()
@ -128,4 +145,8 @@ func! Test_Vet()
  call gotest#assert_quickfix(actual, expected)
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/list.vim
+++ b/pack/acp/start/vim-go/autoload/go/list.vim
@ -1,10 +1,6 @@
-if !exists("g:go_list_type")
+" don't spam the user when Vim is started in Vi compatibility mode
-  let g:go_list_type = ""
+let s:cpo_save = &cpo
-endif
+set cpo&vim
 if !exists("g:go_list_type_commands")
  let g:go_list_type_commands = {}
 endif
 " Window opens the list with the given height up to 10 lines maximum.
 " Otherwise g:go_loclist_height is used.
@ -22,7 +18,7 @@ function! go#list#Window(listtype, ...) abort
    return
  endif
-  let height = get(g:, "go_list_height", 0)
+  let height = go#config#ListHeight()
  if height == 0
    " prevent creating a large location height for a large set of numbers
    if a:1 > 10
@ -113,7 +109,7 @@ endfunction
 " Close closes the location list
 function! go#list#Close(listtype) abort
-  let autoclose_window = get(g:, 'go_list_autoclose', 1)
+  let autoclose_window = go#config#ListAutoclose()
  if !autoclose_window
    return
  endif
@ -126,13 +122,12 @@ function! go#list#Close(listtype) abort
 endfunction
 function! s:listtype(listtype) abort
-  if g:go_list_type == "locationlist"
+  let listtype = go#config#ListType()
-    return "locationlist"
+  if empty(listtype)
-  elseif g:go_list_type == "quickfix"
+    return a:listtype
    return "quickfix"
  endif
-  return a:listtype
+  return listtype
 endfunction
 " s:default_list_type_commands is the defaults that will be used for each of
@ -143,6 +138,7 @@ endfunction
 " in g:go_list_type_commands.
 let s:default_list_type_commands = {
      \ "GoBuild":              "quickfix",
      \ "GoDebug":              "quickfix",
      \ "GoErrCheck":           "quickfix",
      \ "GoFmt":                "locationlist",
      \ "GoGenerate":           "quickfix",
@ -150,6 +146,7 @@ let s:default_list_type_commands = {
      \ "GoLint":               "quickfix",
      \ "GoMetaLinter":         "quickfix",
      \ "GoMetaLinterAutoSave": "locationlist",
      \ "GoModFmt":             "locationlist",
      \ "GoModifyTags":         "locationlist",
      \ "GoRename":             "quickfix",
      \ "GoRun":                "quickfix",
@ -169,7 +166,11 @@ function! go#list#Type(for) abort
    let l:listtype = "quickfix"
  endif
-  return get(g:go_list_type_commands, a:for, l:listtype)
+  return get(go#config#ListTypeCommands(), a:for, l:listtype)
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/lsp.vim
+++ b/pack/acp/start/vim-go/autoload/go/lsp.vim
@ -0,0 +1,533 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 scriptencoding utf-8
 let s:lspfactory = {}
 function! s:lspfactory.get() dict abort
  if !has_key(self, 'current')
    " TODO(bc): check that the lsp is still running.
    let self.current = s:newlsp()
  endif
  return self.current
 endfunction
 function! s:lspfactory.reset() dict abort
  if has_key(self, 'current')
    call remove(self, 'current')
  endif
 endfunction
 function! s:newlsp() abort
  if !go#util#has_job()
    " TODO(bc): start the server in the background using a shell that waits for the right output before returning.
    call go#util#EchoError('This feature requires either Vim 8.0.0087 or newer with +job or Neovim.')
    return
  endif
  " job is the job used to talk to the backing instance of gopls.
  " ready is 0 until the initialize response has been received. 1 afterwards.
  " queue is messages to send after initialization
  " last_request_id is id of the most recently sent request.
  " buf is unprocessed/incomplete responses
  " handlers is a mapping of request ids to dictionaries of functions.
  "   request id -> {start, requestComplete, handleResult, error}
  "   * start is a function that takes no arguments
  "   * requestComplete is a function that takes 1 argument. The parameter will be 1
  "     if the call was succesful.
  "   * handleResult takes a single argument, the result message received from gopls
  "   * error takes a single argument, the error message received from gopls.
  "     The error method is optional.
  let l:lsp = {
        \ 'job':  '',
        \ 'ready': 0,
        \ 'queue': [],
        \ 'last_request_id': 0,
        \ 'buf': '',
        \ 'handlers': {},
        \ }
  function! l:lsp.readMessage(data) dict abort
    let l:responses = []
    let l:rest = a:data
    while 1
      " Look for the end of the HTTP headers
      let l:body_start_idx = matchend(l:rest, "\r\n\r\n")
      if l:body_start_idx < 0
        " incomplete header
        break
      endif
      " Parse the Content-Length header.
      let l:header = l:rest[:l:body_start_idx - 4]
      let l:length_match = matchlist(
      \   l:header,
      \   '\vContent-Length: *(\d+)'
      \)
      if empty(l:length_match)
        " TODO(bc): shutdown gopls?
        throw "invalid JSON-RPC header:\n" . l:header
      endif
      " get the start of the rest
      let l:rest_start_idx = l:body_start_idx + str2nr(l:length_match[1])
      if len(l:rest) < l:rest_start_idx
        " incomplete response body
        break
      endif
      if go#util#HasDebug('lsp')
        let g:go_lsp_log = add(go#config#LspLog(), "<-\n" . l:rest[:l:rest_start_idx - 1])
      endif
      let l:body = l:rest[l:body_start_idx : l:rest_start_idx - 1]
      let l:rest = l:rest[l:rest_start_idx :]
      try
        " add the json body to the list.
        call add(l:responses, json_decode(l:body))
      catch
        " TODO(bc): log the message and/or show an error message.
      finally
        " intentionally left blank.
      endtry
    endwhile
    return [l:rest, l:responses]
  endfunction
  function! l:lsp.handleMessage(ch, data) dict abort
      let self.buf .= a:data
      let [self.buf, l:responses] = self.readMessage(self.buf)
      " TODO(bc): handle notifications (e.g. window/showMessage).
      for l:response in l:responses
        if has_key(l:response, 'id') && has_key(self.handlers, l:response.id)
          try
            let l:handler = self.handlers[l:response.id]
            if has_key(l:response, 'error')
              call l:handler.requestComplete(0)
              if has_key(l:handler, 'error')
                call call(l:handler.error, [l:response.error.message])
              else
                call go#util#EchoError(l:response.error.message)
              endif
              return
            endif
            call l:handler.requestComplete(1)
            call call(l:handler.handleResult, [l:response.result])
          finally
            call remove(self.handlers, l:response.id)
          endtry
        endif
      endfor
  endfunction
  function! l:lsp.handleInitializeResult(result) dict abort
    let self.ready = 1
    " TODO(bc): send initialized message to the server?
    " send messages queued while waiting for ready.
    for l:item in self.queue
      call self.sendMessage(l:item.data, l:item.handler)
    endfor
    " reset the queue
    let self.queue = []
  endfunction
  function! l:lsp.sendMessage(data, handler) dict abort
    if !self.last_request_id
      " TODO(bc): run a server per module and one per GOPATH? (may need to
      " keep track of servers by rootUri).
      let l:msg = self.newMessage(go#lsp#message#Initialize(getcwd()))
      let l:state = s:newHandlerState('')
      let l:state.handleResult = funcref('self.handleInitializeResult', [], l:self)
      let self.handlers[l:msg.id] = l:state
      call l:state.start()
      call self.write(l:msg)
    endif
    if !self.ready
      call add(self.queue, {'data': a:data, 'handler': a:handler})
      return
    endif
    let l:msg = self.newMessage(a:data)
    if has_key(l:msg, 'id')
      let self.handlers[l:msg.id] = a:handler
    endif
    call a:handler.start()
    call self.write(l:msg)
  endfunction
  " newMessage returns a message constructed from data. data should be a dict
  " with 2 or 3 keys: notification, method, and optionally params.
  function! l:lsp.newMessage(data) dict abort
    let l:msg = {
          \ 'method': a:data.method,
          \ 'jsonrpc': '2.0',
          \ }
    if !a:data.notification
      let self.last_request_id += 1
      let l:msg.id = self.last_request_id
    endif
    if has_key(a:data, 'params')
      let l:msg.params = a:data.params
    endif
    return l:msg
  endfunction
  function! l:lsp.write(msg) dict abort
      let l:body = json_encode(a:msg)
      let l:data = 'Content-Length: ' . strlen(l:body) . "\r\n\r\n" . l:body
    if go#util#HasDebug('lsp')
      let g:go_lsp_log = add(go#config#LspLog(), "->\n" . l:data)
    endif
    if has('nvim')
      call chansend(self.job, l:data)
      return
    endif
    call ch_sendraw(self.job, l:data)
  endfunction
  function! l:lsp.exit_cb(job, exit_status) dict abort
    call s:lspfactory.reset()
  endfunction
  " explicitly bind close_cb to state so that within it, self will always refer
  function! l:lsp.close_cb(ch) dict abort
    " TODO(bc): does anything need to be done here?
  endfunction
  function! l:lsp.err_cb(ch, msg) dict abort
    if go#util#HasDebug('lsp')
      let g:go_lsp_log = add(go#config#LspLog(), "<-stderr\n" .  a:msg)
    endif
  endfunction
  " explicitly bind callbacks to l:lsp so that within it, self will always refer
  " to l:lsp instead of l:opts. See :help Partial for more information.
  let l:opts = {
        \ 'in_mode': 'raw',
        \ 'out_mode': 'raw',
        \ 'err_mode': 'nl',
        \ 'noblock': 1,
        \ 'err_cb': funcref('l:lsp.err_cb', [], l:lsp),
        \ 'out_cb': funcref('l:lsp.handleMessage', [], l:lsp),
        \ 'close_cb': funcref('l:lsp.close_cb', [], l:lsp),
        \ 'exit_cb': funcref('l:lsp.exit_cb', [], l:lsp),
        \ 'cwd': getcwd(),
        \}
  let l:bin_path = go#path#CheckBinPath("gopls")
  if empty(l:bin_path)
    return
  endif
  " TODO(bc): output a message indicating which directory lsp is going to
  " start in.
  let l:lsp.job = go#job#Start([l:bin_path], l:opts)
  " TODO(bc): send the initialize message now?
  return l:lsp
 endfunction
 function! s:noop(...) abort
 endfunction
 function! s:newHandlerState(statustype) abort
  let l:state = {
        \ 'winid': win_getid(winnr()),
        \ 'statustype': a:statustype,
        \ 'jobdir': getcwd(),
      \ }
  " explicitly bind requestComplete to state so that within it, self will
  " always refer to state. See :help Partial for more information.
  let l:state.requestComplete = funcref('s:requestComplete', [], l:state)
  " explicitly bind start to state so that within it, self will
  " always refer to state. See :help Partial for more information.
  let l:state.start = funcref('s:start', [], l:state)
  return l:state
 endfunction
 function! s:requestComplete(ok) abort dict
  if self.statustype == ''
    return
  endif
  if go#config#EchoCommandInfo()
    let prefix = '[' . self.statustype . '] '
    if a:ok
      call go#util#EchoSuccess(prefix . "SUCCESS")
    else
      call go#util#EchoError(prefix . "FAIL")
    endif
  endif
  let status = {
        \ 'desc': 'last status',
        \ 'type': self.statustype,
        \ 'state': "success",
        \ }
  if !a:ok
    let status.state = "failed"
  endif
  if has_key(self, 'started_at')
    let elapsed_time = reltimestr(reltime(self.started_at))
    " strip whitespace
    let elapsed_time = substitute(elapsed_time, '^\s*\(.\{-}\)\s*$', '\1', '')
    let status.state .= printf(" (%ss)", elapsed_time)
  endif
  call go#statusline#Update(self.jobdir, status)
 endfunction
 function! s:start() abort dict
  if self.statustype != ''
    let status = {
          \ 'desc': 'current status',
          \ 'type': self.statustype,
          \ 'state': "started",
          \ }
    call go#statusline#Update(self.jobdir, status)
  endif
  let self.started_at = reltime()
 endfunction
 " go#lsp#Definition calls gopls to get the definition of the identifier at
 " line and col in fname. handler should be a dictionary function that takes a
 " list of strings in the form 'file:line:col: message'. handler will be
 " attached to a dictionary that manages state (statuslines, sets the winid,
 " etc.)
 function! go#lsp#Definition(fname, line, col, handler) abort
  call go#lsp#DidChange(a:fname)
  let l:lsp = s:lspfactory.get()
  let l:state = s:newHandlerState('definition')
  let l:state.handleResult = funcref('s:definitionHandler', [function(a:handler, [], l:state)], l:state)
  let l:msg = go#lsp#message#Definition(fnamemodify(a:fname, ':p'), a:line, a:col)
  call l:lsp.sendMessage(l:msg, l:state)
 endfunction
 function! s:definitionHandler(next, msg) abort dict
  " gopls returns a []Location; just take the first one.
  let l:msg = a:msg[0]
  let l:args = [[printf('%s:%d:%d: %s', go#path#FromURI(l:msg.uri), l:msg.range.start.line+1, l:msg.range.start.character+1, 'lsp does not supply a description')]]
  call call(a:next, l:args)
 endfunction
 " go#lsp#Type calls gopls to get the type definition of the identifier at
 " line and col in fname. handler should be a dictionary function that takes a
 " list of strings in the form 'file:line:col: message'. handler will be
 " attached to a dictionary that manages state (statuslines, sets the winid,
 " etc.)
 function! go#lsp#TypeDef(fname, line, col, handler) abort
  call go#lsp#DidChange(a:fname)
  let l:lsp = s:lspfactory.get()
  let l:state = s:newHandlerState('type definition')
  let l:msg = go#lsp#message#TypeDefinition(fnamemodify(a:fname, ':p'), a:line, a:col)
  let l:state.handleResult = funcref('s:typeDefinitionHandler', [function(a:handler, [], l:state)], l:state)
  call l:lsp.sendMessage(l:msg, l:state)
 endfunction
 function! s:typeDefinitionHandler(next, msg) abort dict
  " gopls returns a []Location; just take the first one.
  let l:msg = a:msg[0]
  let l:args = [[printf('%s:%d:%d: %s', go#path#FromURI(l:msg.uri), l:msg.range.start.line+1, l:msg.range.start.character+1, 'lsp does not supply a description')]]
  call call(a:next, l:args)
 endfunction
 function! go#lsp#DidOpen(fname) abort
  if get(b:, 'go_lsp_did_open', 0)
    return
  endif
  if !filereadable(a:fname)
    return
  endif
  let l:lsp = s:lspfactory.get()
  let l:msg = go#lsp#message#DidOpen(fnamemodify(a:fname, ':p'), join(go#util#GetLines(), "\n") . "\n")
  let l:state = s:newHandlerState('')
  let l:state.handleResult = funcref('s:noop')
  call l:lsp.sendMessage(l:msg, l:state)
  let b:go_lsp_did_open = 1
 endfunction
 function! go#lsp#DidChange(fname) abort
  " DidChange is called even when fname isn't open in a buffer (e.g. via
  " go#lsp#Info); don't report the file as open or as having changed when it's
  " not actually a buffer.
  if bufnr(a:fname) == -1
    return
  endif
  call go#lsp#DidOpen(a:fname)
  if !filereadable(a:fname)
    return
  endif
  let l:lsp = s:lspfactory.get()
  let l:msg = go#lsp#message#DidChange(fnamemodify(a:fname, ':p'), join(go#util#GetLines(), "\n") . "\n")
  let l:state = s:newHandlerState('')
  let l:state.handleResult = funcref('s:noop')
  call l:lsp.sendMessage(l:msg, l:state)
 endfunction
 function! go#lsp#DidClose(fname) abort
  if !filereadable(a:fname)
    return
  endif
  if !get(b:, 'go_lsp_did_open', 0)
    return
  endif
  let l:lsp = s:lspfactory.get()
  let l:msg = go#lsp#message#DidClose(fnamemodify(a:fname, ':p'))
  let l:state = s:newHandlerState('')
  let l:state.handleResult = funcref('s:noop')
  call l:lsp.sendMessage(l:msg, l:state)
  let b:go_lsp_did_open = 0
 endfunction
 function! go#lsp#Completion(fname, line, col, handler) abort
  call go#lsp#DidChange(a:fname)
  let l:lsp = s:lspfactory.get()
  let l:msg = go#lsp#message#Completion(a:fname, a:line, a:col)
  let l:state = s:newHandlerState('completion')
  let l:state.handleResult = funcref('s:completionHandler', [function(a:handler, [], l:state)], l:state)
  let l:state.error = funcref('s:completionErrorHandler', [function(a:handler, [], l:state)], l:state)
  call l:lsp.sendMessage(l:msg, l:state)
 endfunction
 function! s:completionHandler(next, msg) abort dict
  " gopls returns a CompletionList.
  let l:matches = []
  for l:item in a:msg.items
    let l:match = {'abbr': l:item.label, 'word': l:item.textEdit.newText, 'info': '', 'kind': go#lsp#completionitemkind#Vim(l:item.kind)}
    if has_key(l:item, 'detail')
        let l:item.info = l:item.detail
    endif
    if has_key(l:item, 'documentation')
      let l:match.info .= "\n\n" . l:item.documentation
    endif
    let l:matches = add(l:matches, l:match)
  endfor
  let l:args = [l:matches]
  call call(a:next, l:args)
 endfunction
 function! s:completionErrorHandler(next, error) abort dict
  call call(a:next, [[]])
 endfunction
 function! go#lsp#Hover(fname, line, col, handler) abort
  call go#lsp#DidChange(a:fname)
  let l:lsp = s:lspfactory.get()
  let l:msg = go#lsp#message#Hover(a:fname, a:line, a:col)
  let l:state = s:newHandlerState('')
  let l:state.handleResult = funcref('s:hoverHandler', [function(a:handler, [], l:state)], l:state)
  let l:state.error = funcref('s:noop')
  call l:lsp.sendMessage(l:msg, l:state)
 endfunction
 function! s:hoverHandler(next, msg) abort dict
  let l:content = split(a:msg.contents.value, '; ')
  if len(l:content) > 1
    let l:curly = stridx(l:content[0], '{')
    let l:content = extend([l:content[0][0:l:curly]], map(extend([l:content[0][l:curly+1:]], l:content[1:]), '"\t" . v:val'))
    let l:content[len(l:content)-1] = '}'
  endif
  let l:args = [l:content]
  call call(a:next, l:args)
 endfunction
 function! go#lsp#Info(showstatus)
  let l:fname = expand('%:p')
  let [l:line, l:col] = getpos('.')[1:2]
  call go#lsp#DidChange(l:fname)
  let l:lsp = s:lspfactory.get()
  if a:showstatus
    let l:state = s:newHandlerState('info')
  else
    let l:state = s:newHandlerState('')
  endif
  let l:state.handleResult = funcref('s:infoDefinitionHandler', [function('s:info', []), a:showstatus], l:state)
  let l:state.error = funcref('s:noop')
  let l:msg = go#lsp#message#Definition(l:fname, l:line, l:col)
  call l:lsp.sendMessage(l:msg, l:state)
 endfunction
 function! s:infoDefinitionHandler(next, showstatus, msg) abort dict
  " gopls returns a []Location; just take the first one.
  let l:msg = a:msg[0]
  let l:fname = go#path#FromURI(l:msg.uri)
  let l:line = l:msg.range.start.line+1
  let l:col = l:msg.range.start.character+1
  let l:lsp = s:lspfactory.get()
  let l:msg = go#lsp#message#Hover(l:fname, l:line, l:col)
  if a:showstatus
    let l:state = s:newHandlerState('info')
  else
    let l:state = s:newHandlerState('')
  endif
  let l:state.handleResult = funcref('s:hoverHandler', [function('s:info', [], l:state)], l:state)
  let l:state.error = funcref('s:noop')
  call l:lsp.sendMessage(l:msg, l:state)
 endfunction
 function! s:info(content) abort dict
  " strip off the method set and fields of structs and interfaces.
  let l:content = substitute(a:content[0], '{.*', '', '')
  call go#util#ShowInfo(l:content)
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/lsp/completionitemkind.vim
+++ b/pack/acp/start/vim-go/autoload/go/lsp/completionitemkind.vim
@ -0,0 +1,47 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 let s:Text = 1
 let s:Method = 2
 let s:Function = 3
 let s:Constructor = 4
 let s:Field = 5
 let s:Variable = 6
 let s:Class = 7
 let s:Interface = 8
 let s:Module = 9
 let s:Property = 10
 let s:Unit = 11
 let s:Value = 12
 let s:Enum = 13
 let s:Keyword = 14
 let s:Snippet = 15
 let s:Color = 16
 let s:File = 17
 let s:Reference = 18
 let s:Folder = 19
 let s:EnumMember = 20
 let s:Constant = 21
 let s:Struct = 22
 let s:Event = 23
 let s:Operator = 24
 let s:TypeParameter = 25
 function! go#lsp#completionitemkind#Vim(kind)
  if a:kind == s:Method || a:kind == s:Function || a:kind == s:Constructor
    return 'f'
  elseif a:kind == s:Variable || a:kind == s:Constant
    return 'v'
  elseif a:kind == s:Field || a:kind == s:Property
    return 'm'
  elseif a:kind == s:Class || a:kind == s:Interface || a:kind == s:Struct
    return 't'
  endif
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/lsp/message.vim
+++ b/pack/acp/start/vim-go/autoload/go/lsp/message.vim
@ -0,0 +1,127 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function! go#lsp#message#Initialize(wd) abort
  return {
          \ 'notification': 0,
          \ 'method': 'initialize',
          \ 'params': {
            \ 'processId': getpid(),
            \ 'rootUri': go#path#ToURI(a:wd),
            \ 'capabilities': {
              \ 'workspace': {},
              \ 'textDocument': {
                \ 'hover': {
                  \ 'contentFormat': ['plaintext'],
                \ },
              \ }
            \ }
          \ }
       \ }
 endfunction
 function! go#lsp#message#Definition(file, line, col) abort
  return {
          \ 'notification': 0,
          \ 'method': 'textDocument/definition',
          \ 'params': {
          \   'textDocument': {
          \       'uri': go#path#ToURI(a:file)
          \   },
          \   'position': s:position(a:line, a:col)
          \ }
       \ }
 endfunction
 function! go#lsp#message#TypeDefinition(file, line, col) abort
  return {
          \ 'notification': 0,
          \ 'method': 'textDocument/typeDefinition',
          \ 'params': {
          \   'textDocument': {
          \       'uri': go#path#ToURI(a:file)
          \   },
          \   'position': s:position(a:line, a:col)
          \ }
       \ }
 endfunction
 function! go#lsp#message#DidOpen(file, content) abort
  return {
          \ 'notification': 1,
          \ 'method': 'textDocument/didOpen',
          \ 'params': {
          \     'textDocument': {
          \         'uri': go#path#ToURI(a:file),
          \         'languageId': 'go',
          \         'text': a:content,
          \     }
          \ }
       \ }
 endfunction
 function! go#lsp#message#DidChange(file, content) abort
  return {
          \ 'notification': 1,
          \ 'method': 'textDocument/didChange',
          \ 'params': {
          \     'textDocument': {
          \         'uri': go#path#ToURI(a:file),
          \     },
          \     'contentChanges': [
          \       {
          \         'text': a:content,
          \       }
          \     ]
          \ }
       \ }
 endfunction
 function! go#lsp#message#DidClose(file) abort
  return {
          \ 'notification': 1,
          \ 'method': 'textDocument/didClose',
          \ 'params': {
          \     'textDocument': {
          \         'uri': go#path#ToURI(a:file),
          \     }
          \ }
       \ }
 endfunction
 function! go#lsp#message#Completion(file, line, col) abort
  return {
          \ 'notification': 0,
          \ 'method': 'textDocument/completion',
          \ 'params': {
          \   'textDocument': {
          \       'uri': go#path#ToURI(a:file)
          \   },
          \   'position': s:position(a:line, a:col),
          \ }
       \ }
 endfunction
 function! go#lsp#message#Hover(file, line, col) abort
  return {
          \ 'notification': 0,
          \ 'method': 'textDocument/hover',
          \ 'params': {
          \   'textDocument': {
          \       'uri': go#path#ToURI(a:file)
          \   },
          \   'position': s:position(a:line, a:col),
          \ }
       \ }
 endfunction
 function! s:position(line, col) abort
  return {'line': a:line - 1, 'character': a:col-1}
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/mod.vim
+++ b/pack/acp/start/vim-go/autoload/go/mod.vim
@ -0,0 +1,150 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 let s:go_major_version = ""
 function! go#mod#Format() abort
  " go mod only exists in `v1.11`
  if empty(s:go_major_version)
    let tokens = matchlist(go#util#System("go version"), '\d\+.\(\d\+\)\(\.\d\+\)\? ')
    let s:go_major_version = str2nr(tokens[1])
  endif
  if s:go_major_version < "11" 
    call go#util#EchoError("Go v1.11 is required to format go.mod file")
    return
  endif
  let fname = fnamemodify(expand("%"), ':p:gs?\\?/?')
  " Save cursor position and many other things.
  let l:curw = winsaveview()
  " Write current unsaved buffer to a temp file
  let l:tmpname = tempname() . '.mod'
  call writefile(go#util#GetLines(), l:tmpname)
  if go#util#IsWin()
    let l:tmpname = tr(l:tmpname, '\', '/')
  endif
  let current_col = col('.')
  let l:args = ['go', 'mod', 'edit', '--fmt', l:tmpname]
  let [l:out, l:err] = go#util#Exec(l:args)
  let diff_offset = len(readfile(l:tmpname)) - line('$')
  if l:err == 0
    call go#mod#update_file(l:tmpname, fname)
  else
    let errors = s:parse_errors(fname, l:out)
    call s:show_errors(errors)
  endif
  " We didn't use the temp file, so clean up
  call delete(l:tmpname)
  " Restore our cursor/windows positions.
  call winrestview(l:curw)
  " be smart and jump to the line the new statement was added/removed
  call cursor(line('.') + diff_offset, current_col)
  " Syntax highlighting breaks less often.
  syntax sync fromstart
 endfunction
 " update_file updates the target file with the given formatted source
 function! go#mod#update_file(source, target)
  " remove undo point caused via BufWritePre
  try | silent undojoin | catch | endtry
  let old_fileformat = &fileformat
  if exists("*getfperm")
    " save file permissions
    let original_fperm = getfperm(a:target)
  endif
  call rename(a:source, a:target)
  " restore file permissions
  if exists("*setfperm") && original_fperm != ''
    call setfperm(a:target , original_fperm)
  endif
  " reload buffer to reflect latest changes
  silent edit!
  let &fileformat = old_fileformat
  let &syntax = &syntax
  let l:listtype = go#list#Type("GoModFmt")
  " the title information was introduced with 7.4-2200
  " https://github.com/vim/vim/commit/d823fa910cca43fec3c31c030ee908a14c272640
  if has('patch-7.4.2200')
    " clean up previous list
    if l:listtype == "quickfix"
      let l:list_title = getqflist({'title': 1})
    else
      let l:list_title = getloclist(0, {'title': 1})
    endif
  else
    " can't check the title, so assume that the list was for go fmt.
    let l:list_title = {'title': 'Format'}
  endif
  if has_key(l:list_title, "title") && l:list_title['title'] == "Format"
    call go#list#Clean(l:listtype)
  endif
 endfunction
 " parse_errors parses the given errors and returns a list of parsed errors
 function! s:parse_errors(filename, content) abort
  let splitted = split(a:content, '\n')
  " list of errors to be put into location list
  let errors = []
  for line in splitted
    let tokens = matchlist(line, '^\(.\{-}\):\(\d\+\):\s*\(.*\)')
    if !empty(tokens)
      call add(errors,{
            \"filename": a:filename,
            \"lnum":     tokens[2],
            \"text":     tokens[3],
            \ })
    endif
  endfor
  return errors
 endfunction
 " show_errors opens a location list and shows the given errors. If the given
 " errors is empty, it closes the the location list
 function! s:show_errors(errors) abort
  let l:listtype = go#list#Type("GoModFmt")
  if !empty(a:errors)
    call go#list#Populate(l:listtype, a:errors, 'Format')
    call go#util#EchoError("GoModFmt returned error")
  endif
  " this closes the window if there are no errors or it opens
  " it if there is any
  call go#list#Window(l:listtype, len(a:errors))
 endfunction
 function! go#mod#ToggleModFmtAutoSave() abort
  if go#config#ModFmtAutosave()
    call go#config#SetModFmtAutosave(0)
    call go#util#EchoProgress("auto mod fmt disabled")
    return
  end
  call go#config#SetModFmtAutosave(1)
  call go#util#EchoProgress("auto mod fmt enabled")
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/package.vim
+++ b/pack/acp/start/vim-go/autoload/go/package.vim
@ -5,6 +5,10 @@
 " This file provides a utility function that performs auto-completion of
 " package names, for use by other commands.
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 let s:goos = $GOOS
 let s:goarch = $GOARCH
@ -28,7 +32,7 @@ if len(s:goarch) == 0
  endif
 endif
-function! go#package#Paths() abort
+function! s:paths() abort
  let dirs = []
  if !exists("s:goroot")
@ -54,63 +58,119 @@ function! go#package#Paths() abort
  return dirs
 endfunction
 function! s:module() abort
  let [l:out, l:err] = go#util#ExecInDir(['go', 'list', '-m', '-f', '{{.Dir}}'])
  if l:err != 0
    return {}
  endif
  let l:dir = split(l:out, '\n')[0]
  let [l:out, l:err] = go#util#ExecInDir(['go', 'list', '-m', '-f', '{{.Path}}'])
  if l:err != 0
    return {}
  endif
  let l:path = split(l:out, '\n')[0]
  return {'dir': l:dir, 'path': l:path}
 endfunction
 function! s:vendordirs() abort
  let l:vendorsuffix = go#util#PathSep() . 'vendor'
  let l:module = s:module()
  if empty(l:module)
    let [l:root, l:err] = go#util#ExecInDir(['go', 'list', '-f', '{{.Root}}'])
    if l:err != 0
      return []
    endif
    let l:root = split(l:root, '\n')[0] . go#util#PathSep() . 'src'
    let [l:dir, l:err] = go#util#ExecInDir(['go', 'list', '-f', '{{.Dir}}'])
    if l:err != 0
      return []
    endif
    let l:dir = split(l:dir, '\n')[0]
    let l:vendordirs = []
    while l:dir != l:root
      let l:vendordir = l:dir . l:vendorsuffix
      if isdirectory(l:vendordir)
        let l:vendordirs = add(l:vendordirs, l:vendordir)
      endif
      let l:dir = fnamemodify(l:dir, ':h')
    endwhile
    return l:vendordirs
  endif
  let l:vendordir = l:module.dir . l:vendorsuffix
  if !isdirectory(l:vendordir)
    return []
  endif
  return [l:vendordir]
 endfunction
 let s:import_paths = {}
-" ImportPath returns the import path in the current directory it was executed
+" ImportPath returns the import path of the package for current buffer.
 function! go#package#ImportPath() abort
  let dir = expand("%:p:h")
  if has_key(s:import_paths, dir)
    return s:import_paths[dir]
  endif
-  let out = go#tool#ExecuteInDir("go list")
+  let [l:out, l:err] = go#util#ExecInDir(['go', 'list'])
-  if go#util#ShellError() != 0
+  if l:err != 0
    return -1
  endif
-  let import_path = split(out, '\n')[0]
+  let l:importpath = split(out, '\n')[0]
  " go list returns '_CURRENTDIRECTORY' if the directory is not inside GOPATH.
  " Check it and retun an error if that is the case
-  if import_path[0] ==# '_'
+  if l:importpath[0] ==# '_'
    return -1
  endif
-  let s:import_paths[dir] = import_path
+  let s:import_paths[dir] = l:importpath
-  return import_path
+  return l:importpath
 endfunction
 " FromPath returns the import path of arg.
 function! go#package#FromPath(arg) abort
-  let path = fnamemodify(resolve(a:arg), ':p')
+  let l:cd = exists('*haslocaldir') && haslocaldir() ? 'lcd' : 'cd'
-  let dirs = go#package#Paths()
+  let l:dir = getcwd()
-  for dir in dirs
+  let l:path = a:arg
-    if len(dir) && match(path, dir) == 0
+  if !isdirectory(l:path)
-      let workspace = dir
+    let l:path = fnamemodify(l:path, ':h')
      break
  endif
  endfor
-  if !exists('workspace')
+  execute l:cd fnameescape(l:path)
  let [l:out, l:err] = go#util#Exec(['go', 'list'])
  execute l:cd fnameescape(l:dir)
  if l:err != 0
    return -1
  endif
-  let path = substitute(path, '/*$', '', '')
+  let l:importpath = split(l:out, '\n')[0]
-  let workspace = substitute(workspace . '/src/', '/+', '', '')
+
-  if isdirectory(path)
+  " go list returns '_CURRENTDIRECTORY' if the directory is not inside GOPATH.
-    return substitute(path, workspace, '', '')
+  " Check it and retun an error if that is the case
-  else
+  if l:importpath[0] ==# '_'
-    return substitute(substitute(path, workspace, '', ''),
+    return -1
          \ '/' . fnamemodify(path, ':t'), '', '')
  endif
  return l:importpath
 endfunction
 function! go#package#CompleteMembers(package, member) abort
-  silent! let content = go#util#System('godoc ' . a:package)
+  let [l:content, l:err] = go#util#Exec(['go', 'doc', a:package])
-  if go#util#ShellError() || !len(content)
+  if l:err || !len(content)
    return []
  endif
  let lines = filter(split(content, "\n"),"v:val !~ '^\\s\\+$'")
  try
    let mx1 = '^\s\+\(\S+\)\s\+=\s\+.*'
@ -136,37 +196,88 @@ function! go#package#Complete(ArgLead, CmdLine, CursorPos) abort
    return go#package#CompleteMembers(words[1], words[2])
  endif
-    let dirs = go#package#Paths()
+  let dirs = s:paths()
  let module = s:module()
-    if len(dirs) == 0
+  if len(dirs) == 0 && empty(module)
    " should not happen
    return []
  endif
  let vendordirs = s:vendordirs()
  let ret = {}
  for dir in dirs
    " this may expand to multiple lines
    let root = split(expand(dir . '/pkg/' . s:goos . '_' . s:goarch), "\n")
-        call add(root, expand(dir . '/src'))
+    let root = add(root, expand(dir . '/src'), )
-        for r in root
+    let root = extend(root, vendordirs)
-            for i in split(globpath(r, a:ArgLead.'*'), "\n")
+    let root = add(root, module)
-                if isdirectory(i)
+    for item in root
-                    let i .= '/'
+      " item may be a dictionary when operating in a module.
-                elseif i !~ '\.a$'
+      if type(item) == type({})
        if empty(item)
          continue
        endif
-                let i = substitute(substitute(i[len(r)+1:], '[\\]', '/', 'g'),
+        let dir = item.dir
        let path = item.path
      else
        let dir = item
        let path = item
      endif
      if !empty(module) && dir ==# module.dir
        if stridx(a:ArgLead, module.path) == 0
          if len(a:ArgLead) != len(module.path)
            let glob = globpath(module.dir, substitute(a:ArgLead, module.path . '/\?', '', '').'*')
          else
            let glob = module.dir
          endif
        elseif stridx(module.path, a:ArgLead) == 0 && stridx(module.path, '/', len(a:ArgLead)) < 0
          " use the module directory when a:ArgLead is contained in
          " module.path and module.path does not have any path segments after
          " a:ArgLead.
          let glob = module.dir
        else
          continue
        endif
      else
        let glob = globpath(dir, a:ArgLead.'*')
      endif
      for candidate in split(glob)
        if isdirectory(candidate)
          " TODO(bc): use wildignore instead of filtering out vendor
          " directories manually?
          if fnamemodify(candidate, ':t') == 'vendor'
            continue
          endif
          let candidate .= '/'
        elseif candidate !~ '\.a$'
          continue
        endif
        if dir !=# path
          let candidate = substitute(candidate, '^' . dir, path, 'g')
        else
          let candidate = candidate[len(dir)+1:]
        endif
        " replace a backslash with a forward slash and drop .a suffixes
        let candidate = substitute(substitute(candidate, '[\\]', '/', 'g'),
                          \ '\.a$', '', 'g')
        " without this the result can have duplicates in form of
        " 'encoding/json' and '/encoding/json/'
-                let i = go#util#StripPathSep(i)
+        let candidate = go#util#StripPathSep(candidate)
-                let ret[i] = i
+        let ret[candidate] = candidate
      endfor
    endfor
  endfor
  return sort(keys(ret))
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/package_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/package_test.vim
@ -0,0 +1,58 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! Test_Complete_GOPATH_simple() abort
  let $GOPATH = fnameescape(fnamemodify(getcwd(), ':p')) . 'test-fixtures/package'
  silent exe 'edit ' . $GOPATH . '/src/package/package.go'
  call s:complete('package', ['package'])
 endfunc
 func! Test_Complete_Module_simple() abort
  silent exe 'edit ' . fnameescape(fnamemodify(getcwd(), ':p')) . 'test-fixtures/package/src/package/package.go'
  call s:complete('package', ['package'])
 endfunc
 func! Test_Complete_GOPATH_subdirs() abort
  let $GOPATH = fnameescape(fnamemodify(getcwd(), ':p')) . 'test-fixtures/package'
  silent exe 'edit ' . $GOPATH . '/src/package/package.go'
  call s:complete('package/', ['package/bar', 'package/baz'])
 endfunc
 func! Test_Complete_Module_subdirs() abort
  silent exe 'edit ' . fnameescape(fnamemodify(getcwd(), ':p')) . 'test-fixtures/package/src/package/package.go'
  call s:complete('package/', ['package/bar', 'package/baz'])
 endfunc
 func! Test_Complete_GOPATH_baronly() abort
  let $GOPATH = fnameescape(fnamemodify(getcwd(), ':p')) . 'test-fixtures/package'
  silent exe 'edit ' . $GOPATH . '/src/package/package.go'
  call s:complete('package/bar', ['package/bar'])
 endfunc
 func! Test_Complete_Module_baronly() abort
  silent exe 'edit ' . fnameescape(fnamemodify(getcwd(), ':p')) . 'test-fixtures/package/src/package/package.go'
  call s:complete('package/bar', ['package/bar'])
 endfunc
 func! Test_Complete_GOPATH_vendor() abort
  let $GOPATH = fnameescape(fnamemodify(getcwd(), ':p')) . 'test-fixtures/package'
  silent exe 'edit ' . $GOPATH . '/src/package/package.go'
  call s:complete('foo', ['foo'])
 endfunc
 func! Test_Complete_Module_vendor() abort
  silent exe 'edit ' . fnameescape(fnamemodify(getcwd(), ':p')) . 'test-fixtures/package/src/package/package.go'
  call s:complete('foo', ['foo'])
 endfunc
 func! s:complete(arglead, expected) abort
  let l:candidates = go#package#Complete(a:arglead, '', 1)
  call assert_equal(a:expected, l:candidates)
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/path.vim
+++ b/pack/acp/start/vim-go/autoload/go/path.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 " initial_go_path is used to store the initial GOPATH that was set when Vim
 " was started. It's used with :GoPathClear to restore the GOPATH when the user
 " changed it explicitly via :GoPath. Initially it's empty. It's being set when
@ -121,13 +125,14 @@ endfunction
 " BinPath returns the binary path of installed go tools.
 function! go#path#BinPath() abort
-  let bin_path = ""
+  let bin_path = go#config#BinPath()
  if bin_path != ""
    return bin_path
  endif
  " check if our global custom path is set, if not check if $GOBIN is set so
  " we can use it, otherwise use default GOPATH
-  if exists("g:go_bin_path")
+  if $GOBIN != ""
    let bin_path = g:go_bin_path
  elseif $GOBIN != ""
    let bin_path = $GOBIN
  else
    let go_paths = split(go#path#Default(), go#util#PathListSep())
@ -141,11 +146,13 @@ function! go#path#BinPath() abort
 endfunction
 " CheckBinPath checks whether the given binary exists or not and returns the
-" path of the binary. It returns an empty string doesn't exists.
+" path of the binary, respecting the go_bin_path and go_search_bin_path_first
 " settings. It returns an empty string if the binary doesn't exist.
 function! go#path#CheckBinPath(binpath) abort
  " remove whitespaces if user applied something like 'goimports   '
  let binpath = substitute(a:binpath, '^\s*\(.\{-}\)\s*$', '\1', '')
-  " save off original path
+
  " save original path
  let old_path = $PATH
  " check if we have an appropriate bin_path
@ -153,7 +160,12 @@ function! go#path#CheckBinPath(binpath) abort
  if !empty(go_bin_path)
    " append our GOBIN and GOPATH paths and be sure they can be found there...
    " let us search in our GOBIN and GOPATH paths
    " respect the ordering specified by go_search_bin_path_first
    if go#config#SearchBinPathFirst()
      let $PATH = go_bin_path . go#util#PathListSep() . $PATH
    else
      let $PATH = $PATH . go#util#PathListSep() . go_bin_path
    endif
  endif
  " if it's in PATH just return it
@ -193,4 +205,44 @@ function! s:CygwinPath(path)
   return substitute(a:path, '\\', '/', "g")
 endfunction
 " go#path#ToURI converts path to a file URI. path should be an absolute path.
 " Relative paths cannot be properly converted to a URI; when path is a
 " relative path, the file scheme will not be prepended.
 function! go#path#ToURI(path)
  let l:absolute = !go#util#IsWin() && a:path[0] is# '/'
  let l:prefix = ''
  let l:path = a:path
  if go#util#IsWin() && l:path[1:2] is# ':\'
    let l:absolute = 1
    let l:prefix = '/' . l:path[0:1]
    let l:path = l:path[2:]
  endif
  return substitute(
  \   (l:absolute ? 'file://' : '') . l:prefix . go#uri#EncodePath(l:path),
  \   '\\',
  \   '/',
  \   'g',
  \)
 endfunction
 function! go#path#FromURI(uri) abort
    let l:i = len('file://')
    let l:encoded_path = a:uri[: l:i - 1] is# 'file://' ? a:uri[l:i :] : a:uri
    let l:path = go#uri#Decode(l:encoded_path)
    " If the path is like /C:/foo/bar, it should be C:\foo\bar instead.
    if go#util#IsWin() && l:path =~# '^/[a-zA-Z]:'
        let l:path = substitute(l:path[1:], '/', '\\', 'g')
    endif
    return l:path
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/play.vim
+++ b/pack/acp/start/vim-go/autoload/go/play.vim
@ -1,7 +1,6 @@
-if !exists("g:go_play_open_browser")
+" don't spam the user when Vim is started in Vi compatibility mode
-  let g:go_play_open_browser = 1
+let s:cpo_save = &cpo
-endif
+set cpo&vim
 function! go#play#Share(count, line1, line2) abort
  if !executable('curl')
@ -13,15 +12,16 @@ function! go#play#Share(count, line1, line2) abort
  let share_file = tempname()
  call writefile(split(content, "\n"), share_file, "b")
-  let command = "curl -s -X POST https://play.golang.org/share --data-binary '@".share_file."'"
+  let l:cmd = ['curl', '-s', '-X', 'POST', 'https://play.golang.org/share',
-  let snippet_id = go#util#System(command)
+        \ '--data-binary', '@' . l:share_file]
  let [l:snippet_id, l:err] = go#util#Exec(l:cmd)
  " we can remove the temp file because it's now posted.
  call delete(share_file)
-  if go#util#ShellError() != 0
+  if l:err != 0
-    echo 'A error has occurred. Run this command to see what the problem is:'
+    echom 'A error has occurred. Run this command to see what the problem is:'
-    echo command
+    echom go#util#Shelljoin(l:cmd)
    return
  endif
@ -34,8 +34,8 @@ function! go#play#Share(count, line1, line2) abort
    let @+ = url
  endif
-  if g:go_play_open_browser != 0
+  if go#config#PlayOpenBrowser()
-    call go#tool#OpenBrowser(url)
+    call go#util#OpenBrowser(url)
  endif
  echo "vim-go: snippet uploaded: ".url
@ -70,4 +70,8 @@ function! s:get_visual_selection() abort
  return join(lines, "\n")
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/rename.vim
+++ b/pack/acp/start/vim-go/autoload/go/rename.vim
@ -1,26 +1,14 @@
-if !exists("g:go_gorename_bin")
+" don't spam the user when Vim is started in Vi compatibility mode
-  let g:go_gorename_bin = "gorename"
+let s:cpo_save = &cpo
-endif
+set cpo&vim
 " Set the default value. A value of "1" is a shortcut for this, for
 " compatibility reasons.
 function! s:default() abort
  if !exists("g:go_gorename_prefill") || g:go_gorename_prefill == 1
    let g:go_gorename_prefill = 'expand("<cword>") =~# "^[A-Z]"' .
          \ '? go#util#pascalcase(expand("<cword>"))' .
          \ ': go#util#camelcase(expand("<cword>"))'
  endif
 endfunction
 call s:default()
 function! go#rename#Rename(bang, ...) abort
  call s:default()
  let to_identifier = ""
  if a:0 == 0
    let ask = printf("vim-go: rename '%s' to: ", expand("<cword>"))
-    if g:go_gorename_prefill != ''
+    let prefill = go#config#GorenamePrefill()
-      let to_identifier = input(ask, eval(g:go_gorename_prefill))
+    if prefill != ''
      let to_identifier = input(ask, eval(prefill))
    else
      let to_identifier = input(ask)
    endif
@ -33,7 +21,7 @@ function! go#rename#Rename(bang, ...) abort
  endif
  " return with a warning if the bin doesn't exist
-  let bin_path = go#path#CheckBinPath(g:go_gorename_bin)
+  let bin_path = go#path#CheckBinPath(go#config#GorenameBin())
  if empty(bin_path)
    return
  endif
@ -41,22 +29,9 @@ function! go#rename#Rename(bang, ...) abort
  let fname = expand('%:p')
  let pos = go#util#OffsetCursor()
  let offset = printf('%s:#%d', fname, pos)
-
+  let cmd = [bin_path, "-offset", offset, "-to", to_identifier, '-tags', go#config#BuildTags()]
  " no need to escape for job call
  let bin_path = go#util#has_job() ? bin_path : shellescape(bin_path)
  let offset = go#util#has_job() ? offset : shellescape(offset)
  let to_identifier = go#util#has_job() ? to_identifier : shellescape(to_identifier)
  let cmd = [bin_path, "-offset", offset, "-to", to_identifier]
  " check for any tags
  if exists('g:go_build_tags')
    let tags = get(g:, 'go_build_tags')
    call extend(cmd, ["-tags", tags])
  endif
  if go#util#has_job()
    call go#util#EchoProgress(printf("renaming to '%s' ...", to_identifier))
    call s:rename_job({
          \ 'cmd': cmd,
          \ 'bang': a:bang,
@ -64,71 +39,42 @@ function! go#rename#Rename(bang, ...) abort
    return
  endif
-  let command = join(cmd, " ")
+  let [l:out, l:err] = go#util#ExecInDir(l:cmd)
-  let out = go#tool#ExecuteInDir(command)
+  call s:parse_errors(l:err, a:bang, split(l:out, '\n'))
  let splitted = split(out, '\n')
  call s:parse_errors(go#util#ShellError(), a:bang, splitted)
 endfunction
 function s:rename_job(args)
-  let state = {
+  let l:job_opts = {
-        \ 'exited': 0,
+        \ 'bang': a:args.bang,
-        \ 'closed': 0,
+        \ 'for': 'GoRename',
-        \ 'exitval': 0,
+        \ 'statustype': 'gorename',
        \ 'messages': [],
        \ 'status_dir': expand('%:p:h'),
        \ 'bang': a:args.bang
        \ }
-  function! s:callback(chan, msg) dict
+  " autowrite is not enabled for jobs
-    call add(self.messages, a:msg)
+  call go#cmd#autowrite()
  let l:cbs = go#job#Options(l:job_opts)
  " wrap l:cbs.exit_cb in s:exit_cb.
  let l:cbs.exit_cb = funcref('s:exit_cb', [l:cbs.exit_cb])
  call go#job#Start(a:args.cmd, l:cbs)
 endfunction
-  function! s:exit_cb(job, exitval) dict
+function! s:reload_changed() abort
-    let self.exited = 1
+  " reload all files to reflect the new changes. We explicitly call
-    let self.exitval = a:exitval
+  " checktime to trigger a reload of all files. See
-
+  " http://www.mail-archive.com/vim@vim.org/msg05900.html for more info
-    let status = {
+  " about the autoread bug
-          \ 'desc': 'last status',
+  let current_autoread = &autoread
-          \ 'type': "gorename",
+  set autoread
-          \ 'state': "finished",
+  silent! checktime
-          \ }
+  let &autoread = current_autoread
    if a:exitval
      let status.state = "failed"
    endif
    call go#statusline#Update(self.status_dir, status)
    if self.closed
      call s:parse_errors(self.exitval, self.bang, self.messages)
    endif
 endfunction
-  function! s:close_cb(ch) dict
+" s:exit_cb reloads any changed buffers and then calls next.
-    let self.closed = 1
+function! s:exit_cb(next, job, exitval) abort
-
+  call s:reload_changed()
-    if self.exited
+  call call(a:next, [a:job, a:exitval])
      call s:parse_errors(self.exitval, self.bang, self.messages)
    endif
  endfunction
  " explicitly bind the callbacks to state so that self within them always
  " refers to state. See :help Partial for more information.
  let start_options = {
        \ 'callback': funcref("s:callback", [], state),
        \ 'exit_cb': funcref("s:exit_cb", [], state),
        \ 'close_cb': funcref("s:close_cb", [], state),
        \ }
  call go#statusline#Update(state.status_dir, {
        \ 'desc': "current status",
        \ 'type': "gorename",
        \ 'state': "started",
        \})
  call job_start(a:args.cmd, start_options)
 endfunction
 function s:parse_errors(exit_val, bang, out)
@ -143,8 +89,7 @@ function s:parse_errors(exit_val, bang, out)
  let l:listtype = go#list#Type("GoRename")
  if a:exit_val != 0
-    call go#util#EchoError("FAILED")
+    let errors = go#util#ParseErrors(a:out)
    let errors = go#tool#ParseErrors(a:out)
    call go#list#Populate(l:listtype, errors, 'Rename')
    call go#list#Window(l:listtype, len(errors))
    if !empty(errors) && !a:bang
@ -163,9 +108,6 @@ function s:parse_errors(exit_val, bang, out)
  call go#util#EchoSuccess(a:out[0])
  " refresh the buffer so we can see the new content
  " TODO(arslan): also find all other buffers and refresh them too. For this
  " we need a way to get the list of changes from gorename upon an success
  " change.
  silent execute ":e"
 endfunction
@ -178,4 +120,8 @@ function! go#rename#Complete(lead, cmdline, cursor)
        \ 'strpart(v:val, 0, len(a:lead)) == a:lead')
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/statusline.vim
+++ b/pack/acp/start/vim-go/autoload/go/statusline.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 " Statusline
 """"""""""""""""""""""""""""""""
@ -26,7 +30,7 @@ function! go#statusline#Show() abort
  " lazy initialiation of the cleaner
  if !s:timer_id
    " clean every 60 seconds all statuses
-    let interval = get(g:, 'go_statusline_duration', 60000)
+    let interval = go#config#StatuslineDuration()
    let s:timer_id = timer_start(interval, function('go#statusline#Clear'), {'repeat': -1})
  endif
@ -54,11 +58,11 @@ function! go#statusline#Show() abort
  " only update highlight if status has changed.
  if status_text != s:last_status
    if status.state =~ "success" || status.state =~ "finished" || status.state =~ "pass"
-      hi goStatusLineColor cterm=bold ctermbg=76 ctermfg=22
+      hi goStatusLineColor cterm=bold ctermbg=76 ctermfg=22 guibg=#5fd700 guifg=#005f00
    elseif status.state =~ "started" || status.state =~ "analysing" || status.state =~ "compiling"
-      hi goStatusLineColor cterm=bold ctermbg=208 ctermfg=88
+      hi goStatusLineColor cterm=bold ctermbg=208 ctermfg=88 guibg=#ff8700 guifg=#870000
    elseif status.state =~ "failed"
-      hi goStatusLineColor cterm=bold ctermbg=196 ctermfg=52
+      hi goStatusLineColor cterm=bold ctermbg=196 ctermfg=52 guibg=#ff0000 guifg=#5f0000
    endif
  endif
@ -109,4 +113,8 @@ function! go#statusline#Clear(timer_id) abort
  exe 'let &ro = &ro'
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/tags.vim
+++ b/pack/acp/start/vim-go/autoload/go/tags.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 " mapped to :GoAddTags
 function! go#tags#Add(start, end, count, ...) abort
  let fname = fnamemodify(expand("%"), ':p:gs?\\?/?')
@ -31,24 +35,22 @@ function! go#tags#run(start, end, offset, mode, fname, test_mode, ...) abort
    let args["modified"] = 1
  endif
-  let result = s:create_cmd(args)
+  let l:result = s:create_cmd(args)
  if has_key(result, 'err')
    call go#util#EchoError(result.err)
    return -1
  endif
  let command = join(result.cmd, " ")
  if &modified
    let filename = expand("%:p:gs!\\!/!")
    let content  = join(go#util#GetLines(), "\n")
    let in = filename . "\n" . strlen(content) . "\n" . content
-    let out = go#util#System(command, in)
+    let [l:out, l:err] = go#util#Exec(l:result.cmd, in)
  else
-    let out = go#util#System(command)
+    let [l:out, l:err] = go#util#Exec(l:result.cmd)
  endif
-  if go#util#ShellError() != 0
+  if l:err != 0
    call go#util#EchoError(out)
    return
  endif
@ -115,19 +117,18 @@ func s:create_cmd(args) abort
  if empty(bin_path)
    return {'err': "gomodifytags does not exist"}
  endif
  let bin_path = go#util#Shellescape(bin_path)
  let l:start = a:args.start
  let l:end = a:args.end
  let l:offset = a:args.offset
  let l:mode = a:args.mode
  let l:cmd_args = a:args.cmd_args
-  let l:modifytags_transform = get(g:, 'go_addtags_transform', "snakecase")
+  let l:modifytags_transform = go#config#AddtagsTransform()
  " start constructing the command
  let cmd = [bin_path]
  call extend(cmd, ["-format", "json"])
-  call extend(cmd, ["-file", go#util#Shellescape(a:args.fname)])
+  call extend(cmd, ["-file", a:args.fname])
  call extend(cmd, ["-transform", l:modifytags_transform])
  if has_key(a:args, "modified")
@ -162,10 +163,6 @@ func s:create_cmd(args) abort
      endfor
    endif
    " construct options
    if !empty(l:options)
      call extend(cmd, ["-add-options", join(l:options, ",")])
    else
    " default value
    if empty(l:tags)
      let l:tags = ["json"]
@ -173,6 +170,10 @@ func s:create_cmd(args) abort
    " construct tags
    call extend(cmd, ["-add-tags", join(l:tags, ",")])
      " construct options
    if !empty(l:options)
      call extend(cmd, ["-add-options", join(l:options, ",")])
    endif
  elseif l:mode == "remove"
    if empty(l:cmd_args)
@ -211,4 +212,8 @@ func s:create_cmd(args) abort
  return {'cmd': cmd}
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/tags_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/tags_test.vim
@ -1,4 +1,8 @@
-func! Test_add_tags() abort
+" don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! TestAddTags() abort
  try
    let l:tmp = gotest#load_fixture('tags/add_all_input.go')
    silent call go#tags#run(0, 0, 40, "add", bufname(''), 1)
@ -9,6 +13,28 @@ func! Test_add_tags() abort
 endfunc
 func! TestAddTags_WithOptions() abort
  try
    let l:tmp = gotest#load_fixture('tags/add_all_input.go')
    silent call go#tags#run(0, 0, 40, "add", bufname(''), 1, 'json,omitempty')
    call gotest#assert_fixture('tags/add_all_golden_options.go')
  finally
    call delete(l:tmp, 'rf')
  endtry
 endfunc
 func! TestAddTags_AddOptions() abort
  try
    let l:tmp = gotest#load_fixture('tags/add_all_input.go')
    silent call go#tags#run(0, 0, 40, "add", bufname(''), 1, 'json')
    call gotest#assert_fixture('tags/add_all_golden.go')
    silent call go#tags#run(0, 0, 40, "add", bufname(''), 1, 'json,omitempty')
    call gotest#assert_fixture('tags/add_all_golden_options.go')
  finally
    call delete(l:tmp, 'rf')
  endtry
 endfunc
 func! Test_remove_tags() abort
  try
    let l:tmp = gotest#load_fixture('tags/remove_all_input.go')
@ -19,4 +45,8 @@ func! Test_remove_tags() abort
  endtry
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim:ts=2:sts=2:sw=2:et
--- a/pack/acp/start/vim-go/autoload/go/template.vim
+++ b/pack/acp/start/vim-go/autoload/go/template.vim
@ -1,53 +1,56 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 let s:current_file = expand("<sfile>")
 function! go#template#create() abort
-  let l:go_template_use_pkg = get(g:, 'go_template_use_pkg', 0)
+  let l:go_template_use_pkg = go#config#TemplateUsePkg()
  let l:root_dir = fnamemodify(s:current_file, ':h:h:h')
  let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
  let dir = getcwd()
  let l:package_name = -1
  if isdirectory(expand('%:p:h'))
    execute cd . fnameescape(expand('%:p:h'))
  let l:package_name = go#tool#PackageName()
  endif
-  " if we can't figure out any package name(no Go files or non Go package
+  " if we can't figure out any package name (i.e. no Go files in the directory)
-  " files) from the directory create the template or use the cwd
+  " from the directory create the template or use the directory as the name.
-  " as the name
+  if l:package_name == -1
-  if l:package_name == -1 && l:go_template_use_pkg != 1
+    if l:go_template_use_pkg == 1
-    let l:filename = fnamemodify(expand("%"), ':t')
+      let l:path = fnamemodify(expand('%:p:h'), ':t')
-    if l:filename =~ "_test.go$"
+      let l:content = printf("package %s", l:path)
-      let l:template_file = get(g:, 'go_template_test_file', "hello_world_test.go")
+      call append(0, l:content)
    else
-      let l:template_file = get(g:, 'go_template_file', "hello_world.go")
+      let l:filename = expand('%:t')
      if l:filename =~ "_test.go$"
        let l:template_file = go#config#TemplateTestFile()
      else
        let l:template_file = go#config#TemplateFile()
      endif
      let l:template_path = go#util#Join(l:root_dir, "templates", l:template_file)
      silent exe 'keepalt 0r ' . fnameescape(l:template_path)
-  elseif l:package_name == -1 && l:go_template_use_pkg == 1
+    endif
    " cwd is now the dir of the package
    let l:path = fnamemodify(getcwd(), ':t')
    let l:content = printf("package %s", l:path)
    call append(0, l:content)
  else
    let l:content = printf("package %s", l:package_name)
    call append(0, l:content)
  endif
  " checking that the last line is empty shouldn't be necessary, but for some
  " reason the last line isn't the expected empty line when run via tests.
  if getline('$') is ''
    $delete _
-
+  endif
  execute cd . fnameescape(dir)
 endfunction
 function! go#template#ToggleAutoCreate() abort
-  if get(g:, "go_template_autocreate", 1)
+  if go#config#TemplateAutocreate()
-    let g:go_template_autocreate = 0
+    call go#config#SetTemplateAutocreate(0)
    call go#util#EchoProgress("auto template create disabled")
    return
  end
-  let g:go_template_autocreate = 1
+  call go#config#SetTemplateAutocreate(1)
  call go#util#EchoProgress("auto template create enabled")
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/template_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/template_test.vim
@ -0,0 +1,62 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! Test_TemplateCreate() abort
  try
    let l:tmp = gotest#write_file('foo/empty.txt', [''])
    edit foo/bar.go
    call gotest#assert_buffer(1, [
          \ 'func main() {',
          \ '\tfmt.Println("vim-go")',
          \ '}'])
  finally
    call delete(l:tmp, 'rf')
  endtry
  try
    let l:tmp = gotest#write_file('foo/empty.txt', [''])
    edit foo/bar_test.go
    call gotest#assert_buffer(1, [
          \ 'func TestHelloWorld(t *testing.T) {',
          \ '\t// t.Fatal("not implemented")',
          \ '}'])
  finally
    call delete(l:tmp, 'rf')
  endtry
 endfunc
 func! Test_TemplateCreate_UsePkg() abort
  try
    let l:tmp = gotest#write_file('foo/empty.txt', [''])
    let g:go_template_use_pkg = 1
    edit foo/bar.go
    call gotest#assert_buffer(0, ['package foo'])
  finally
    unlet g:go_template_use_pkg
    call delete(l:tmp, 'rf')
  endtry
 endfunc
 func! Test_TemplateCreate_PackageExists() abort
  try
    let l:tmp = gotest#write_file('quux/quux.go', ['package foo'])
    edit quux/bar.go
    call gotest#assert_buffer(0, ['package foo'])
  finally
    call delete(l:tmp, 'rf')
  endtry
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/term.vim
+++ b/pack/acp/start/vim-go/autoload/go/term.vim
@ -1,34 +1,36 @@
-if has('nvim') && !exists("g:go_term_mode")
+" don't spam the user when Vim is started in Vi compatibility mode
-  let g:go_term_mode = 'vsplit'
+let s:cpo_save = &cpo
-endif
+set cpo&vim
 " new creates a new terminal with the given command. Mode is set based on the
 " global variable g:go_term_mode, which is by default set to :vsplit
-function! go#term#new(bang, cmd) abort
+function! go#term#new(bang, cmd, errorformat) abort
-  return go#term#newmode(a:bang, a:cmd, g:go_term_mode)
+  return go#term#newmode(a:bang, a:cmd, a:errorformat, go#config#TermMode())
 endfunction
-" new creates a new terminal with the given command and window mode.
+" go#term#newmode creates a new terminal with the given command and window mode.
-function! go#term#newmode(bang, cmd, mode) abort
+function! go#term#newmode(bang, cmd, errorformat, mode) abort
-  let mode = a:mode
+  let l:mode = a:mode
-  if empty(mode)
+  if empty(l:mode)
-    let mode = g:go_term_mode
+    let l:mode = go#config#TermMode()
  endif
-  let state = {
+  let l:state = {
        \ 'cmd': a:cmd,
        \ 'bang' : a:bang,
        \ 'winid': win_getid(winnr()),
-        \ 'stdout': []
+        \ 'stdout': [],
        \ 'stdout_buf': '',
        \ 'errorformat': a:errorformat,
      \ }
  " execute go build in the files directory
-  let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
+  let l:cd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
-  let dir = getcwd()
+  let l:dir = getcwd()
-  execute cd . fnameescape(expand("%:p:h"))
+  execute l:cd . fnameescape(expand("%:p:h"))
-  execute mode.' __go_term__'
+  execute l:mode . ' __go_term__'
  setlocal filetype=goterm
  setlocal bufhidden=delete
@ -41,79 +43,107 @@ function! go#term#newmode(bang, cmd, mode) abort
  "
  " Don't set an on_stderr, because it will be passed the same data as
  " on_stdout. See https://github.com/neovim/neovim/issues/2836
-  let job = {
+  let l:job = {
        \ 'on_stdout': function('s:on_stdout', [], state),
        \ 'on_exit' : function('s:on_exit', [], state),
      \ }
-  let state.id = termopen(a:cmd, job)
+  let l:state.id = termopen(a:cmd, l:job)
-  let state.termwinid = win_getid(winnr())
+  let l:state.termwinid = win_getid(winnr())
-  execute cd . fnameescape(dir)
+  execute l:cd . fnameescape(l:dir)
  " resize new term if needed.
-  let height = get(g:, 'go_term_height', winheight(0))
+  let l:height = go#config#TermHeight()
-  let width = get(g:, 'go_term_width', winwidth(0))
+  let l:width = go#config#TermWidth()
  " Adjust the window width or height depending on whether it's a vertical or
  " horizontal split.
-  if mode =~ "vertical" || mode =~ "vsplit" || mode =~ "vnew"
+  if l:mode =~ "vertical" || l:mode =~ "vsplit" || l:mode =~ "vnew"
-    exe 'vertical resize ' . width
+    exe 'vertical resize ' . l:width
  elseif mode =~ "split" || mode =~ "new"
-    exe 'resize ' . height
+    exe 'resize ' . l:height
  endif
  " we also need to resize the pty, so there you go...
-  call jobresize(state.id, width, height)
+  call jobresize(l:state.id, l:width, l:height)
-  call win_gotoid(state.winid)
+  call win_gotoid(l:state.winid)
-  return state.id
+  return l:state.id
 endfunction
 function! s:on_stdout(job_id, data, event) dict abort
-  call extend(self.stdout, a:data)
+  " A single empty string means EOF was reached. The first item will never be
  " the empty string except for when it's the only item and is signaling that
  " EOF was reached.
  if len(a:data) == 1 && a:data[0] == ''
    " when there's nothing buffered, return early so that an
    " erroneous message will not be added.
    if self.stdout_buf == ''
      return
    endif
    let self.stdout = add(self.stdout, self.stdout_buf)
  else
    let l:data = copy(a:data)
    let l:data[0] = self.stdout_buf . l:data[0]
    " The last element may be a partial line; save it for next time.
    let self.stdout_buf = l:data[-1]
    let self.stdout = extend(self.stdout, l:data[:-2])
  endif
 endfunction
 function! s:on_exit(job_id, exit_status, event) dict abort
  let l:winid = win_getid(winnr())
  call win_gotoid(self.winid)
  let l:listtype = go#list#Type("_term")
-  " usually there is always output so never branch into this clause
+  if a:exit_status == 0
-  if empty(self.stdout)
+    call go#list#Clean(l:listtype)
-    call s:cleanlist(self.winid, l:listtype)
+    call win_gotoid(l:winid)
    return
  endif
  let errors = go#tool#ParseErrors(self.stdout)
  let errors = go#tool#FilterValids(errors)
  if !empty(errors)
    " close terminal; we don't need it anymore
    call win_gotoid(self.termwinid)
    close
  call win_gotoid(self.winid)
-    call go#list#Populate(l:listtype, errors, self.cmd)
+  let l:title = self.cmd
-    call go#list#Window(l:listtype, len(errors))
+  if type(l:title) == v:t_list
-    if !self.bang
+    let l:title = join(self.cmd)
      call go#list#JumpToFirst(l:listtype)
  endif
  let l:i = 0
  while l:i < len(self.stdout)
    let self.stdout[l:i] = substitute(self.stdout[l:i], "\r$", '', 'g')
    let l:i += 1
  endwhile
  call go#list#ParseFormat(l:listtype, self.errorformat, self.stdout, l:title)
  let l:errors = go#list#Get(l:listtype)
  call go#list#Window(l:listtype, len(l:errors))
  if empty(l:errors)
    call go#util#EchoError( '[' . l:title . '] ' . "FAIL")
    call win_gotoid(l:winid)
    return
  endif
-  call s:cleanlist(self.winid, l:listtype)
+  " close terminal; we don't need it anymore
  call win_gotoid(self.termwinid)
  close!
  if self.bang
    call win_gotoid(l:winid)
    return
  endif
  call win_gotoid(self.winid)
  call go#list#JumpToFirst(l:listtype)
 endfunction
-function! s:cleanlist(winid, listtype) abort
+" restore Vi compatibility settings
-  " There are no errors. Clean and close the list. Jump to the window to which
+let &cpo = s:cpo_save
-  " the location list is attached, close the list, and then jump back to the
+unlet s:cpo_save
  " current window.
  let winid = win_getid(winnr())
  call win_gotoid(a:winid)
  call go#list#Clean(a:listtype)
  call win_gotoid(l:winid)
 endfunction
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/term_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/term_test.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! Test_GoTermNewMode()
  if !has('nvim')
    return
@ -13,7 +17,7 @@ func! Test_GoTermNewMode()
    let cmd = "go run ".  go#util#Shelljoin(go#tool#Files())
    set nosplitright
-    call go#term#newmode(0, cmd, '')
+    call go#term#new(0, cmd, &errorformat)
    let actual = expand('%:p')
    call assert_equal(actual, l:expected)
@ -37,7 +41,7 @@ func! Test_GoTermNewMode_SplitRight()
    let cmd = "go run ".  go#util#Shelljoin(go#tool#Files())
    set splitright
-    call go#term#newmode(0, cmd, '')
+    call go#term#new(0, cmd, &errorformat)
    let actual = expand('%:p')
    call assert_equal(actual, l:expected)
@ -47,4 +51,8 @@ func! Test_GoTermNewMode_SplitRight()
  endtry
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/test-fixtures/complete/complete.go
+++ b/pack/acp/start/vim-go/autoload/go/test-fixtures/complete/complete.go
@ -0,0 +1,9 @@
 package complete
 type T struct {
 	V string
 }
 func Example(s string) {
 	Example("")
 }
--- a/pack/acp/start/vim-go/autoload/go/test-fixtures/debug/compilerror/main.go
+++ b/pack/acp/start/vim-go/autoload/go/test-fixtures/debug/compilerror/main.go
@ -0,0 +1,7 @@
 package main
 import "fmt"
 func main() {
 	fmt.Println("vim-go"
 }
--- a/pack/acp/start/vim-go/autoload/go/test-fixtures/debug/debugmain/debugmain.go
+++ b/pack/acp/start/vim-go/autoload/go/test-fixtures/debug/debugmain/debugmain.go
@ -0,0 +1,7 @@
 package main
 import "fmt"
 func main() {
 	fmt.Println("vim-go")
 }
--- a/pack/acp/start/vim-go/autoload/go/test-fixtures/fmt/src/imports
+++ b/pack/acp/start/vim-go/autoload/go/test-fixtures/fmt/src/imports
@ -1 +0,0 @@
 ../imports/
--- a/pack/acp/start/vim-go/autoload/go/test-fixtures/fmt/src/imports
+++ b/pack/acp/start/vim-go/autoload/go/test-fixtures/fmt/src/imports
@ -0,0 +1 @@
 ../imports/
--- a/pack/acp/start/vim-go/autoload/go/test-fixtures/package/src/package/bar/.gitkeep
+++ b/pack/acp/start/vim-go/autoload/go/test-fixtures/package/src/package/bar/.gitkeep
--- a/pack/acp/start/vim-go/autoload/go/test-fixtures/package/src/package/baz/.gitkeep
+++ b/pack/acp/start/vim-go/autoload/go/test-fixtures/package/src/package/baz/.gitkeep
--- a/pack/acp/start/vim-go/autoload/go/test-fixtures/package/src/package/go.mod
+++ b/pack/acp/start/vim-go/autoload/go/test-fixtures/package/src/package/go.mod
@ -0,0 +1,3 @@
 module package
 go 1.12
--- a/pack/acp/start/vim-go/autoload/go/test-fixtures/package/src/package/package.go
+++ b/pack/acp/start/vim-go/autoload/go/test-fixtures/package/src/package/package.go
@ -0,0 +1,7 @@
 package main
 import "fmt"
 func main() {
 	fmt.Println("vim-go")
 }
--- a/pack/acp/start/vim-go/autoload/go/test-fixtures/package/src/package/vendor/foo/.gitkeep
+++ b/pack/acp/start/vim-go/autoload/go/test-fixtures/package/src/package/vendor/foo/.gitkeep
--- a/pack/acp/start/vim-go/autoload/go/test-fixtures/tags/add_all_golden_options.go
+++ b/pack/acp/start/vim-go/autoload/go/test-fixtures/tags/add_all_golden_options.go
@ -0,0 +1,16 @@
 package main
 type Server struct {
 	Name          string   `json:"name,omitempty"`
 	ID            int      `json:"id,omitempty"`
 	MyHomeAddress string   `json:"my_home_address,omitempty"`
 	SubDomains    []string `json:"sub_domains,omitempty"`
 	Empty         string   `json:"empty,omitempty"`
 	Example       int64    `json:"example,omitempty"`
 	Example2      string   `json:"example_2,omitempty"`
 	Bar           struct {
 		Four string `json:"four,omitempty"`
 		Five string `json:"five,omitempty"`
 	} `json:"bar,omitempty"`
 	Lala interface{} `json:"lala,omitempty"`
 }
--- a/pack/acp/start/vim-go/autoload/go/test-fixtures/test/src/testcompilerror/testcompilerror_test.go
+++ b/pack/acp/start/vim-go/autoload/go/test-fixtures/test/src/testcompilerror/testcompilerror_test.go
@ -0,0 +1,11 @@
 package main
 import (
 	"io/ioutil"
 	"testing"
 )
 func TestSomething(t *testing.T) {
 	r := struct{}{}
 	ioutil.ReadAll(r)
 }
--- a/pack/acp/start/vim-go/autoload/go/test-fixtures/test/src/veterror/veterror.go
+++ b/pack/acp/start/vim-go/autoload/go/test-fixtures/test/src/veterror/veterror.go
@ -0,0 +1,7 @@
 package main
 import "fmt"
 func main() {
 	fmt.Errorf("%v")
 }
--- a/pack/acp/start/vim-go/autoload/go/test.vim
+++ b/pack/acp/start/vim-go/autoload/go/test.vim
@ -1,8 +1,12 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 " Test runs `go test` in the current directory. If compile is true, it'll
 " compile the tests instead of running them (useful to catch errors in the
 " test files). Any other argument is appended to the final `go test` command.
 function! go#test#Test(bang, compile, ...) abort
-  let args = ["test"]
+  let args = ["test", '-tags', go#config#BuildTags()]
  " don't run the test, only compile it. Useful to capture and fix errors.
  if a:compile
@ -10,11 +14,6 @@ function! go#test#Test(bang, compile, ...) abort
    call extend(args, ["-c", "-o", testfile])
  endif
  if exists('g:go_build_tags')
    let tags = get(g:, 'go_build_tags')
    call extend(args, ["-tags", tags])
  endif
  if a:0
    let goargs = a:000
@ -24,18 +23,35 @@ function! go#test#Test(bang, compile, ...) abort
      let goargs = map(copy(a:000), "expand(v:val)")
    endif
    if !(has('nvim') || go#util#has_job())
      let goargs = go#util#Shelllist(goargs, 1)
    endif
    call extend(args, goargs, 1)
  else
    " only add this if no custom flags are passed
-    let timeout  = get(g:, 'go_test_timeout', '10s')
+    let timeout = go#config#TestTimeout()
    call add(args, printf("-timeout=%s", timeout))
  endif
-  if get(g:, 'go_echo_command_info', 1)
+  if go#config#TermEnabled()
    call go#term#new(a:bang, ["go"] + args, s:errorformat())
  endif
  if go#util#has_job()
    " use vim's job functionality to call it asynchronously
    let job_options  = {
          \ 'bang': a:bang,
          \ 'for': 'GoTest',
          \ 'statustype': 'test',
          \ 'errorformat': s:errorformat(),
          \ }
    if a:compile
      let job_options.statustype = 'compile ' . job_options.statustype
    endif
    call s:test_job(['go'] + args, job_options)
    return
  endif
  if go#config#EchoCommandInfo()
    if a:compile
      call go#util#EchoProgress("compiling tests ...")
    else
@ -43,35 +59,12 @@ function! go#test#Test(bang, compile, ...) abort
    endif
  endif
  if go#util#has_job()
    " use vim's job functionality to call it asynchronously
    let job_args = {
          \ 'cmd': ['go'] + args,
          \ 'bang': a:bang,
          \ 'winnr': winnr(),
          \ 'dir': getcwd(),
          \ 'compile_test': a:compile,
          \ 'jobdir': fnameescape(expand("%:p:h")),
          \ }
    call s:test_job(job_args)
    return
  elseif has('nvim')
    " use nvims's job functionality
    if get(g:, 'go_term_enabled', 0)
      let id = go#term#new(a:bang, ["go"] + args)
    else
      let id = go#jobcontrol#Spawn(a:bang, "test", "GoTest", args)
    endif
    return id
  endif
  call go#cmd#autowrite()
  redraw
-  let command = "go " . join(args, ' ')
+  let l:cmd = ['go'] + l:args
-  let out = go#tool#ExecuteInDir(command)
+
  let [l:out, l:err] = go#util#ExecInDir(l:cmd)
  " TODO(bc): When the output is JSON, the JSON should be run through a
  " filter to produce lines that are more easily described by errorformat.
@ -81,17 +74,19 @@ function! go#test#Test(bang, compile, ...) abort
  let dir = getcwd()
  execute cd fnameescape(expand("%:p:h"))
-  if go#util#ShellError() != 0
+  if l:err != 0
-    call go#list#ParseFormat(l:listtype, s:errorformat(), split(out, '\n'), command)
+    let l:winid = win_getid(winnr())
    call go#list#ParseFormat(l:listtype, s:errorformat(), split(out, '\n'), l:cmd)
    let errors = go#list#Get(l:listtype)
    call go#list#Window(l:listtype, len(errors))
-    if !empty(errors) && !a:bang
+    if empty(errors)
      call go#list#JumpToFirst(l:listtype)
    elseif empty(errors)
      " failed to parse errors, output the original content
      call go#util#EchoError(out)
    elseif a:bang
      call win_gotoid(l:winid)
    else
      call go#list#JumpToFirst(l:listtype)
    endif
    call go#util#EchoError("[test] FAIL")
  else
    call go#list#Clean(l:listtype)
@ -130,154 +125,20 @@ function! go#test#Func(bang, ...) abort
    call extend(args, a:000)
  else
    " only add this if no custom flags are passed
-    let timeout  = get(g:, 'go_test_timeout', '10s')
+    let timeout = go#config#TestTimeout()
    call add(args, printf("-timeout=%s", timeout))
  endif
  call call('go#test#Test', args)
 endfunction
-function! s:test_job(args) abort
+function! s:test_job(cmd, args) abort
  let status = {
        \ 'desc': 'current status',
        \ 'type': "test",
        \ 'state': "started",
        \ }
  if a:args.compile_test
    let status.state = "compiling"
  endif
  " autowrite is not enabled for jobs
  call go#cmd#autowrite()
-  let state = {
+  call go#job#Spawn(a:cmd, a:args)
        \ 'exited': 0,
        \ 'closed': 0,
        \ 'exitval': 0,
        \ 'messages': [],
        \ 'args': a:args,
        \ 'compile_test': a:args.compile_test,
        \ 'status_dir': expand('%:p:h'),
        \ 'started_at': reltime()
      \ }
  call go#statusline#Update(state.status_dir, status)
  function! s:callback(chan, msg) dict
    call add(self.messages, a:msg)
 endfunction
  function! s:exit_cb(job, exitval) dict
    let self.exited = 1
    let self.exitval = a:exitval
    let status = {
          \ 'desc': 'last status',
          \ 'type': "test",
          \ 'state': "pass",
          \ }
    if self.compile_test
      let status.state = "success"
    endif
    if a:exitval
      let status.state = "failed"
    endif
    if get(g:, 'go_echo_command_info', 1)
      if a:exitval == 0
        if self.compile_test
          call go#util#EchoSuccess("[test] SUCCESS")
        else
          call go#util#EchoSuccess("[test] PASS")
        endif
      else
        call go#util#EchoError("[test] FAIL")
      endif
    endif
    let elapsed_time = reltimestr(reltime(self.started_at))
    " strip whitespace
    let elapsed_time = substitute(elapsed_time, '^\s*\(.\{-}\)\s*$', '\1', '')
    let status.state .= printf(" (%ss)", elapsed_time)
    call go#statusline#Update(self.status_dir, status)
    if self.closed
      call s:show_errors(self.args, self.exitval, self.messages)
    endif
  endfunction
  function! s:close_cb(ch) dict
    let self.closed = 1
    if self.exited
      call s:show_errors(self.args, self.exitval, self.messages)
    endif
  endfunction
  " explicitly bind the callbacks to state so that self within them always
  " refers to state. See :help Partial for more information.
  let start_options = {
        \ 'callback': funcref("s:callback", [], state),
        \ 'exit_cb': funcref("s:exit_cb", [], state),
        \ 'close_cb': funcref("s:close_cb", [], state)
      \ }
  " pre start
  let dir = getcwd()
  let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
  let jobdir = fnameescape(expand("%:p:h"))
  execute cd . jobdir
  call job_start(a:args.cmd, start_options)
  " post start
  execute cd . fnameescape(dir)
 endfunction
 " show_errors parses the given list of lines of a 'go test' output and returns
 " a quickfix compatible list of errors. It's intended to be used only for go
 " test output.
 function! s:show_errors(args, exit_val, messages) abort
    let l:listtype = go#list#Type("GoTest")
    if a:exit_val == 0
      call go#list#Clean(l:listtype)
      return
    endif
  " TODO(bc): When messages is JSON, the JSON should be run through a
  " filter to produce lines that are more easily described by errorformat.
  let l:listtype = go#list#Type("GoTest")
  let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
  try
    execute cd a:args.jobdir
    call go#list#ParseFormat(l:listtype, s:errorformat(), a:messages, join(a:args.cmd))
    let errors = go#list#Get(l:listtype)
  finally
    execute cd . fnameescape(a:args.dir)
  endtry
  if !len(errors)
    " failed to parse errors, output the original content
    call go#util#EchoError(a:messages)
    call go#util#EchoError(a:args.dir)
    return
  endif
  if a:args.winnr == winnr()
    call go#list#Window(l:listtype, len(errors))
    if !empty(errors) && !a:args.bang
      call go#list#JumpToFirst(l:listtype)
    endif
  endif
 endfunction
 let s:efm = ""
 let s:go_test_show_name = 0
@ -288,7 +149,7 @@ function! s:errorformat() abort
  "   https://github.com/golang/go/issues/2981.
  let goroot = go#util#goroot()
-  let show_name=get(g:, 'go_test_show_name', 0)
+  let show_name = go#config#TestShowName()
  if s:efm != "" && s:go_test_show_name == show_name
    return s:efm
  endif
@ -297,15 +158,12 @@ function! s:errorformat() abort
  " each level of test indents the test output 4 spaces. Capturing groups
  " (e.g. \(\)) cannot be used in an errorformat, but non-capturing groups can
  " (e.g. \%(\)).
-  let indent = '%\\%(    %\\)%#'
+  let indent = '%\\%(    %\\)'
  " match compiler errors
  let format = "%f:%l:%c: %m"
  " ignore `go test -v` output for starting tests
-  let format .= ",%-G=== RUN   %.%#"
+  let format = "%-G=== RUN   %.%#"
  " ignore `go test -v` output for passing tests
-  let format .= ",%-G" . indent . "--- PASS: %.%#"
+  let format .= ",%-G" . indent . "%#--- PASS: %.%#"
  " Match failure lines.
  "
@ -315,24 +173,25 @@ function! s:errorformat() abort
  " e.g.:
  "   '--- FAIL: TestSomething (0.00s)'
  if show_name
-    let format .= ",%G" . indent . "--- FAIL: %m (%.%#)"
+    let format .= ",%G" . indent . "%#--- FAIL: %m (%.%#)"
  else
-    let format .= ",%-G" . indent . "--- FAIL: %.%#"
+    let format .= ",%-G" . indent . "%#--- FAIL: %.%#"
  endif
  " Go 1.10 test output {{{1
  " Matches test output lines.
  "
  " All test output lines start with the test indentation and a tab, followed
  " by the filename, a colon, the line number, another colon, a space, and the
  " message. e.g.:
  "   '\ttime_test.go:30: Likely problem: the time zone files have not been installed.'
-  let format .= ",%A" . indent . "%\\t%\\+%f:%l: %m"
+  let format .= ",%A" . indent . "%#%\\t%\\+%f:%l: %m"
  " also match lines that don't have a message (i.e. the message begins with a
  " newline or is the empty string):
  " e.g.:
  "     t.Errorf("\ngot %v; want %v", actual, expected)
  "     t.Error("")
-  let format .= ",%A" . indent . "%\\t%\\+%f:%l: "
+  let format .= ",%A" . indent . "%#%\\t%\\+%f:%l: "
  " Match the 2nd and later lines of multi-line output. These lines are
  " indented the number of spaces for the level of nesting of the test,
@ -345,7 +204,17 @@ function! s:errorformat() abort
  " indicate that they're multiple lines of output, but in that case the lines
  " get concatenated in the quickfix list, which is not what users typically
  " want when writing a newline into their test output.
-  let format .= ",%G" . indent . "%\\t%\\{2}%m"
+  let format .= ",%G" . indent . "%#%\\t%\\{2}%m"
  " }}}1
  " Go 1.11 test output {{{1
  " Match test output lines similarly to Go 1.10 test output lines, but they
  " use an indent level where the Go 1.10 test output uses tabs, so they'll
  " always have at least one level indentation...
  let format .= ",%A" . indent . "%\\+%f:%l: %m"
  let format .= ",%A" . indent . "%\\+%f:%l: "
  let format .= ",%G" . indent . "%\\{2\\,}%m"
  " }}}1
  " set the format for panics.
@ -375,7 +244,7 @@ function! s:errorformat() abort
  " e.g.:
  "   '\t/usr/local/go/src/time.go:1313 +0x5d'
-  " panicaddress, and readyaddress are identical except for
+  " panicaddress and readyaddress are identical except for
  " panicaddress sets the filename and line number.
  let panicaddress = "%\\t%f:%l +0x%[0-9A-Fa-f]%\\+"
  let readyaddress = "%\\t%\\f%\\+:%\\d%\\+ +0x%[0-9A-Fa-f]%\\+"
@ -398,6 +267,11 @@ function! s:errorformat() abort
  " the running goroutine's stack.
  let format .= ",%Z" . panicaddress
  " Match and ignore errors from runtime.goparkunlock(). These started
  " appearing in stack traces from Go 1.12 test timeouts.
  let format .= ",%-Gruntime.goparkunlock(%.%#"
  let format .= ",%-G%\\t" . goroot . "%\\f%\\+:%\\d%\\+"
  " Match and ignore panic address without being part of a multi-line message.
  " This is to catch those lines that come after the top most non-standard
  " library line in stack traces.
@ -409,12 +283,26 @@ function! s:errorformat() abort
  let format .= ",%-Cexit status %[0-9]%\\+"
  "let format .= ",exit status %[0-9]%\\+"
-  " Match and ignore exit failure lines whether part of a multi-line message
+  " Match and ignore failure lines whether part of a multi-line message
  " or not, because these lines sometimes come before and sometimes after
  " panic stacktraces.
  let format .= ",%-CFAIL%\\t%.%#"
  "let format .= ",FAIL%\\t%.%#"
  " match compiler errors.
  " These are very smilar to errors from <=go1.10 test output, but lack
  " leading tabs for the first line of an error, and subsequent lines only
  " have one tab instead of two.
  let format .= ",%A%f:%l:%c: %m"
  let format .= ",%A%f:%l: %m"
  " It would be nice if this weren't necessary, but panic lines from tests are
  " prefixed with a single leading tab, making them very similar to 2nd and
  " later lines of a multi-line compiler error. Swallow it so that it doesn't
  " cause a quickfix entry since the next %G entry can add a quickfix entry
  " for 2nd and later lines of a multi-line compiler error.
  let format .= ",%-C%\\tpanic: %.%#"
  let format .= ",%G%\\t%m"
  " Match and ignore everything else in multi-line messages.
  let format .= ",%-C%.%#"
  " Match and ignore everything else not in a multi-line message:
@ -425,4 +313,8 @@ function! s:errorformat() abort
  return s:efm
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/test_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/test_test.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! Test_GoTest() abort
  let expected = [
        \ {'lnum': 12, 'bufnr': 2, 'col': 0, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': 'log message'},
@ -62,26 +66,33 @@ endfunc
 func! Test_GoTestShowName() abort
  let expected = [
        \ {'lnum': 0, 'bufnr': 0, 'col': 0, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': 'TestHelloWorld'},
-        \ {'lnum': 6, 'bufnr': 9, 'col': 0, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': 'so long'},
+        \ {'lnum': 6, 'bufnr': 7, 'col': 0, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': 'so long'},
        \ {'lnum': 0, 'bufnr': 0, 'col': 0, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': 'TestHelloWorld/sub'},
-        \ {'lnum': 9, 'bufnr': 9, 'col': 0, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': 'thanks for all the fish'},
+        \ {'lnum': 9, 'bufnr': 7, 'col': 0, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': 'thanks for all the fish'},
      \ ]
  let g:go_test_show_name=1
  call s:test('showname/showname_test.go', expected)
-  let g:go_test_show_name=0
+  unlet g:go_test_show_name
 endfunc
 func! Test_GoTestVet() abort
  let expected = [
        \ {'lnum': 6, 'bufnr': 10, 'col': 2, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': 'Errorf format %v reads arg #1, but call has 0 args'},
      \ ]
  call s:test('veterror/veterror.go', expected)
 endfunc
 func! Test_GoTestTestCompilerError() abort
  let expected = [
        \ {'lnum': 10, 'bufnr': 8, 'col': 16, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': 'cannot use r (type struct {}) as type io.Reader in argument to ioutil.ReadAll:'},
        \ {'lnum': 0, 'bufnr': 0, 'col': 0, 'valid': 1, 'vcol': 0, 'nr': -1, 'type': '', 'pattern': '', 'text': 'struct {} does not implement io.Reader (missing Read method)'}
      \ ]
  call s:test('testcompilerror/testcompilerror_test.go', expected)
 endfunc
 func! s:test(file, expected, ...) abort
  if has('nvim')
    " nvim mostly shows test errors correctly, but the the expected errors are
    " slightly different; buffer numbers are not the same and stderr doesn't
    " seem to be redirected to the job, so the lines from the panic aren't in
    " the output to be parsed, and hence are not in the quickfix lists. Once
    " those two issues are resolved, this early return should be removed so
    " the tests will run for Neovim, too.
    return
  endif
  let $GOPATH = fnameescape(fnamemodify(getcwd(), ':p')) . 'test-fixtures/test'
  silent exe 'e ' . $GOPATH . '/src/' . a:file
@ -94,7 +105,7 @@ func! s:test(file, expected, ...) abort
  endif
  " run the tests
-  call call(function('go#test#Test'), args)
+  silent call call(function('go#test#Test'), args)
  let actual = getqflist()
  let start = reltime()
@ -118,4 +129,8 @@ func! s:normalize_durations(str) abort
  return substitute(a:str, '[0-9]\+\(\.[0-9]\+\)\?s', '0.000s', 'g')
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/textobj.vim
+++ b/pack/acp/start/vim-go/autoload/go/textobj.vim
@ -1,48 +1,132 @@
-if !exists("g:go_textobj_enabled")
+" don't spam the user when Vim is started in Vi compatibility mode
-  let g:go_textobj_enabled = 1
+let s:cpo_save = &cpo
-endif
+set cpo&vim
 if !exists("g:go_textobj_include_function_doc")
  let g:go_textobj_include_function_doc = 1
 endif
 if !exists("g:go_textobj_include_variable")
  let g:go_textobj_include_variable = 1
 endif
 " ( ) motions
 " { } motions
 " s for sentence
-" p for parapgrah
+" p for paragraph
 " < >
 " t for tag
-" Select a function in visual mode.
+function! go#textobj#Comment(mode) abort
-function! go#textobj#Function(mode) abort
+  let l:fname = expand('%:p')
  let offset = go#util#OffsetCursor()
-  let fname = shellescape(expand("%:p"))
+  try
    if &modified
    " Write current unsaved buffer to a temp file and use the modified content
      let l:tmpname = tempname()
      call writefile(go#util#GetLines(), l:tmpname)
-    let fname = l:tmpname
+      let l:fname = l:tmpname
    endif
-  let bin_path = go#path#CheckBinPath('motion')
+    let l:cmd = ['motion',
-  if empty(bin_path)
+          \ '-format', 'json',
          \ '-file', l:fname,
          \ '-offset', go#util#OffsetCursor(),
          \ '-mode', 'comment',
          \ ]
    let [l:out, l:err] = go#util#Exec(l:cmd)
    if l:err
      call go#util#EchoError(l:out)
      return
    endif
  finally
    if exists("l:tmpname")
      call delete(l:tmpname)
    endif
  endtry
  let l:result = json_decode(l:out)
  if type(l:result) != 4 || !has_key(l:result, 'comment')
    return
  endif
-  let command = printf("%s -format vim -file %s -offset %s", bin_path, fname, offset)
+  let l:info = l:result.comment
-  let command .= " -mode enclosing"
+  call cursor(l:info.startLine, l:info.startCol)
-  if g:go_textobj_include_function_doc
+  " Adjust cursor to exclude start comment markers. Try to be a little bit
-    let command .= " -parse-comments"
+  " clever when using multi-line '/*' markers.
  if a:mode is# 'i'
    " trim whitespace so matching below works correctly
    let l:line = substitute(getline('.'), '^\s*\(.\{-}\)\s*$', '\1', '')
    " //text
    if l:line[:2] is# '// '
      call cursor(l:info.startLine, l:info.startCol+3)
    " // text
    elseif l:line[:1] is# '//'
      call cursor(l:info.startLine, l:info.startCol+2)
    " /*
    " text
    elseif l:line =~# '^/\* *$'
      call cursor(l:info.startLine+1, 0)
      " /*
      "  * text
      if getline('.')[:2] is# ' * '
        call cursor(l:info.startLine+1, 4)
      " /*
      "  *text
      elseif getline('.')[:1] is# ' *'
        call cursor(l:info.startLine+1, 3)
      endif
    " /* text
    elseif l:line[:2] is# '/* '
      call cursor(l:info.startLine, l:info.startCol+3)
    " /*text
    elseif l:line[:1] is# '/*'
      call cursor(l:info.startLine, l:info.startCol+2)
    endif
  endif
-  let out = go#util#System(command)
+  normal! v
-  if go#util#ShellError() != 0
+
  " Exclude trailing newline.
  if a:mode is# 'i'
    let l:info.endCol -= 1
  endif
  call cursor(l:info.endLine, l:info.endCol)
  " Exclude trailing '*/'.
  if a:mode is# 'i'
    let l:line = getline('.')
    " text
    " */
    if l:line =~# '^ *\*/$'
      call cursor(l:info.endLine - 1, len(getline(l:info.endLine - 1)))
    " text */
    elseif l:line[-3:] is# ' */'
      call cursor(l:info.endLine, l:info.endCol - 3)
    " text*/
    elseif l:line[-2:] is# '*/'
      call cursor(l:info.endLine, l:info.endCol - 2)
    endif
  endif
 endfunction
 " Select a function in visual mode.
 function! go#textobj#Function(mode) abort
  let l:fname = expand("%:p")
  if &modified
    let l:tmpname = tempname()
    call writefile(go#util#GetLines(), l:tmpname)
    let l:fname = l:tmpname
  endif
  let l:cmd = ['motion',
        \ '-format', 'vim',
        \ '-file', l:fname,
        \ '-offset', go#util#OffsetCursor(),
        \ '-mode', 'enclosing',
        \ ]
  if go#config#TextobjIncludeFunctionDoc()
    let l:cmd += ['-parse-comments']
  endif
  let [l:out, l:err] = go#util#Exec(l:cmd)
  if l:err
    call go#util#EchoError(out)
    return
  endif
@ -63,9 +147,9 @@ function! go#textobj#Function(mode) abort
  if a:mode == 'a'
    " anonymous functions doesn't have associated doc. Also check if the user
    " want's to include doc comments for function declarations
-    if has_key(info, 'doc') && g:go_textobj_include_function_doc
+    if has_key(info, 'doc') && go#config#TextobjIncludeFunctionDoc()
      call cursor(info.doc.line, info.doc.col)
-    elseif info['sig']['name'] == '' && g:go_textobj_include_variable
+    elseif info['sig']['name'] == '' && go#config#TextobjIncludeVariable()
      " one liner anonymous functions
      if info.lbrace.line == info.rbrace.line
        " jump to first nonblack char, to get the correct column
@ -101,36 +185,28 @@ endfunction
 " Get the location of the previous or next function.
 function! go#textobj#FunctionLocation(direction, cnt) abort
-  let offset = go#util#OffsetCursor()
+  let l:fname = expand("%:p")
  let fname = shellescape(expand("%:p"))
  if &modified
    " Write current unsaved buffer to a temp file and use the modified content
    let l:tmpname = tempname()
    call writefile(go#util#GetLines(), l:tmpname)
-    let fname = l:tmpname
+    let l:fname = l:tmpname
  endif
-  let bin_path = go#path#CheckBinPath('motion')
+  let l:cmd = ['motion',
-  if empty(bin_path)
+        \ '-format', 'vim',
-    return
+        \ '-file', l:fname,
        \ '-offset', go#util#OffsetCursor(),
        \ '-shift', a:cnt,
        \ '-mode', a:direction,
        \ ]
  if go#config#TextobjIncludeFunctionDoc()
    let l:cmd += ['-parse-comments']
  endif
-  let command = printf("%s -format vim -file %s -offset %s", bin_path, fname, offset)
+  let [l:out, l:err] = go#util#Exec(l:cmd)
-  let command .= ' -shift ' . a:cnt
+  if l:err
  if a:direction == 'next'
    let command .= ' -mode next'
  else " 'prev'
    let command .= ' -mode prev'
  endif
  if g:go_textobj_include_function_doc
    let command .= " -parse-comments"
  endif
  let out = go#util#System(command)
  if go#util#ShellError() != 0
    call go#util#EchoError(out)
    return
  endif
@ -190,7 +266,7 @@ function! go#textobj#FunctionJump(mode, direction) abort
  endif
  if a:mode == 'v' && a:direction == 'prev'
-    if has_key(info, 'doc') && g:go_textobj_include_function_doc
+    if has_key(info, 'doc') && go#config#TextobjIncludeFunctionDoc()
      keepjumps call cursor(info.doc.line, 1)
    else
      keepjumps call cursor(info.func.line, 1)
@ -201,4 +277,8 @@ function! go#textobj#FunctionJump(mode, direction) abort
  keepjumps call cursor(info.func.line, 1)
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/tool.vim
+++ b/pack/acp/start/vim-go/autoload/go/tool.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 " From "go list -h".
 function! go#tool#ValidFiles(...)
  let l:list = ["GoFiles", "CgoFiles", "IgnoredGoFiles", "CFiles", "CXXFiles",
@ -36,8 +40,8 @@ function! go#tool#Files(...) abort
    endif
  endfor
-  let out = go#tool#ExecuteInDir('go list -f ' . shellescape(combined))
+  let [l:out, l:err] = go#util#ExecInDir(['go', 'list', '-tags', go#config#BuildTags(), '-f', l:combined])
-  return split(out, '\n')
+  return split(l:out, '\n')
 endfunction
 function! go#tool#Deps() abort
@ -46,9 +50,8 @@ function! go#tool#Deps() abort
  else
    let format = "{{range $f := .Deps}}{{$f}}\n{{end}}"
  endif
-  let command = 'go list -f '.shellescape(format)
+  let [l:out, l:err] = go#util#ExecInDir(['go', 'list', '-tags', go#config#BuildTags(), '-f', l:format])
-  let out = go#tool#ExecuteInDir(command)
+  return split(l:out, '\n')
  return split(out, '\n')
 endfunction
 function! go#tool#Imports() abort
@ -58,188 +61,79 @@ function! go#tool#Imports() abort
  else
    let format = "{{range $f := .Imports}}{{$f}}{{printf \"\\n\"}}{{end}}"
  endif
-  let command = 'go list -f '.shellescape(format)
+  let [l:out, l:err] = go#util#ExecInDir(['go', 'list', '-tags', go#config#BuildTags(), '-f', l:format])
-  let out = go#tool#ExecuteInDir(command)
+  if l:err != 0
  if go#util#ShellError() != 0
    echo out
    return imports
  endif
  for package_path in split(out, '\n')
-    let cmd = "go list -f '{{.Name}}' " . shellescape(package_path)
+    let [l:out, l:err] = go#util#ExecInDir(['go', 'list', '-tags', go#config#BuildTags(), '-f', '{{.Name}}', l:package_path])
-    let package_name = substitute(go#tool#ExecuteInDir(cmd), '\n$', '', '')
+    if l:err != 0
      echo out
      return imports
    endif
    let package_name = substitute(l:out, '\n$', '', '')
    let imports[package_name] = package_path
  endfor
  return imports
 endfunction
-function! go#tool#Info(auto) abort
+function! go#tool#Info(showstatus) abort
-  let l:mode = get(g:, 'go_info_mode', 'gocode')
+  let l:mode = go#config#InfoMode()
  if l:mode == 'gocode'
-    call go#complete#Info(a:auto)
+    call go#complete#Info(a:showstatus)
  elseif l:mode == 'guru'
-    call go#guru#DescribeInfo()
+    call go#guru#DescribeInfo(a:showstatus)
  elseif l:mode == 'gopls'
    call go#lsp#Info(a:showstatus)
  else
-    call go#util#EchoError('go_info_mode value: '. l:mode .' is not valid. Valid values are: [gocode, guru]')
+    call go#util#EchoError('go_info_mode value: '. l:mode .' is not valid. Valid values are: [gocode, guru, gopls]')
  endif
 endfunction
 function! go#tool#PackageName() abort
-  let command = "go list -f \"{{.Name}}\""
+  let [l:out, l:err] = go#util#ExecInDir(['go', 'list', '-tags', go#config#BuildTags(), '-f', '{{.Name}}'])
-  let out = go#tool#ExecuteInDir(command)
+  if l:err != 0
  if go#util#ShellError() != 0
      return -1
  endif
  return split(out, '\n')[0]
 endfunction
 function! go#tool#ParseErrors(lines) abort
  let errors = []
  for line in a:lines
    let fatalerrors = matchlist(line, '^\(fatal error:.*\)$')
    let tokens = matchlist(line, '^\s*\(.\{-}\):\(\d\+\):\s*\(.*\)')
    if !empty(fatalerrors)
      call add(errors, {"text": fatalerrors[1]})
    elseif !empty(tokens)
      " strip endlines of form ^M
      let out = substitute(tokens[3], '\r$', '', '')
      call add(errors, {
            \ "filename" : fnamemodify(tokens[1], ':p'),
            \ "lnum"     : tokens[2],
            \ "text"     : out,
            \ })
    elseif !empty(errors)
      " Preserve indented lines.
      " This comes up especially with multi-line test output.
      if match(line, '^\s') >= 0
        call add(errors, {"text": line})
      endif
    endif
  endfor
  return errors
 endfunction
 "FilterValids filters the given items with only items that have a valid
 "filename. Any non valid filename is filtered out.
 function! go#tool#FilterValids(items) abort
  " Remove any nonvalid filename from the location list to avoid opening an
  " empty buffer. See https://github.com/fatih/vim-go/issues/287 for
  " details.
  let filtered = []
  let is_readable = {}
  for item in a:items
    if has_key(item, 'bufnr')
      let filename = bufname(item.bufnr)
    elseif has_key(item, 'filename')
      let filename = item.filename
    else
      " nothing to do, add item back to the list
      call add(filtered, item)
      continue
    endif
    if !has_key(is_readable, filename)
      let is_readable[filename] = filereadable(filename)
    endif
    if is_readable[filename]
      call add(filtered, item)
    endif
  endfor
  for k in keys(filter(is_readable, '!v:val'))
    echo "vim-go: " | echohl Identifier | echon "[run] Dropped " | echohl Constant | echon  '"' . k . '"'
    echohl Identifier | echon " from location list (nonvalid filename)" | echohl None
  endfor
  return filtered
 endfunction
 function! go#tool#ExecuteInDir(cmd) abort
  " Verify that the directory actually exists. If the directory does not
  " exist, then assume that the a:cmd should not be executed. Callers expect
  " to check v:shell_error (via go#util#ShellError()), so execute a command
  " that will return an error as if a:cmd was run and exited with an error.
  " This helps avoid errors when working with plugins that use virtual files
  " that don't actually exist on the file system (e.g. vim-fugitive's
  " GitDiff).
  if !isdirectory(expand("%:p:h"))
    let [out, err] = go#util#Exec(["false"])
    return ''
  endif
  let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
  let dir = getcwd()
  try
    execute cd . fnameescape(expand("%:p:h"))
    let out = go#util#System(a:cmd)
  finally
    execute cd . fnameescape(dir)
  endtry
  return out
 endfunction
 " Exists checks whether the given importpath exists or not. It returns 0 if
 " the importpath exists under GOPATH.
 function! go#tool#Exists(importpath) abort
-    let command = "go list ". a:importpath
+    let [l:out, l:err] = go#util#ExecInDir(['go', 'list', a:importpath])
-    let out = go#tool#ExecuteInDir(command)
+    if l:err != 0
    if go#util#ShellError() != 0
        return -1
    endif
    return 0
 endfunction
-" following two functions are from: https://github.com/mattn/gist-vim
+function! go#tool#DescribeBalloon()
-" thanks  @mattn
+  let l:fname = fnamemodify(bufname(v:beval_bufnr), ':p')
-function! s:get_browser_command() abort
+  call go#lsp#Hover(l:fname, v:beval_lnum, v:beval_col, funcref('s:balloon', []))
-    let go_play_browser_command = get(g:, 'go_play_browser_command', '')
+  return ''
    if go_play_browser_command == ''
        if go#util#IsWin()
            let go_play_browser_command = '!start rundll32 url.dll,FileProtocolHandler %URL%'
        elseif go#util#IsMac()
            let go_play_browser_command = 'open %URL%'
        elseif executable('xdg-open')
            let go_play_browser_command = 'xdg-open %URL%'
        elseif executable('firefox')
            let go_play_browser_command = 'firefox %URL% &'
        elseif executable('chromium')
            let go_play_browser_command = 'chromium %URL% &'
        else
            let go_play_browser_command = ''
        endif
    endif
    return go_play_browser_command
 endfunction
-function! go#tool#OpenBrowser(url) abort
+function! s:balloon(msg)
-    let cmd = s:get_browser_command()
+  let l:msg = a:msg
-    if len(cmd) == 0
+  if has('balloon_eval')
-        redraw
+    if has('balloon_multiline')
-        echohl WarningMsg
+      let l:msg = join(a:msg, "\n")
        echo "It seems that you don't have general web browser. Open URL below."
        echohl None
        echo a:url
        return
    endif
    if cmd =~ '^!'
        let cmd = substitute(cmd, '%URL%', '\=escape(shellescape(a:url),"#")', 'g')
        silent! exec cmd
    elseif cmd =~ '^:[A-Z]'
        let cmd = substitute(cmd, '%URL%', '\=escape(a:url,"#")', 'g')
        exec cmd
    else
-        let cmd = substitute(cmd, '%URL%', '\=shellescape(a:url)', 'g')
+      let l:msg = substitute(join(map(deepcopy(a:msg), 'substitute(v:val, "\t", "", "")'), '; '), '{;', '{', '')
        call go#util#System(cmd)
    endif
  endif
  call balloon_show(l:msg)
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/tool_test.vim
+++ b/pack/acp/start/vim-go/autoload/go/tool_test.vim
@ -1,8 +1,12 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 func! Test_ExecuteInDir() abort
  let l:tmp = gotest#write_file('a/a.go', ['package a'])
  try
-    let l:out = go#tool#ExecuteInDir("pwd")
+    let l:out = go#util#ExecInDir(['pwd'])
-    call assert_equal(l:tmp . "/src/a\n", l:out)
+    call assert_equal([l:tmp . "/src/a\n", 0], l:out)
  finally
    call delete(l:tmp, 'rf')
  endtry
@ -13,11 +17,15 @@ func! Test_ExecuteInDir_nodir() abort
  exe ':e ' . l:tmp . '/new-dir/a'
  try
-    let l:out = go#tool#ExecuteInDir("pwd")
+    let l:out = go#util#ExecInDir(['pwd'])
-    call assert_equal('', l:out)
+    call assert_equal(['', 1], l:out)
  finally
    call delete(l:tmp, 'rf')
  endtry
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/ui.vim
+++ b/pack/acp/start/vim-go/autoload/go/ui.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 let s:buf_nr = -1
 "OpenWindow opens a new scratch window and put's the content into the window
@ -111,4 +115,8 @@ function! go#ui#OpenDefinition(filter) abort
  norm! zz
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/uri.vim
+++ b/pack/acp/start/vim-go/autoload/go/uri.vim
@ -0,0 +1,38 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 function! go#uri#Encode(value) abort
    return s:encode(a:value, '[^A-Za-z0-9_.~-]')
 endfunction
 function! go#uri#EncodePath(value) abort
    let l:separator = '/'
    if go#util#IsWin()
      let l:separator = '\\'
    endif
    return s:encode(a:value, '[^' . l:separator . 'A-Za-z0-9_.~-]')
 endfunction
 function! s:encode(value, unreserved)
    return substitute(
    \   a:value,
    \   a:unreserved,
    \   '\="%".printf(''%02X'', char2nr(submatch(0)))',
    \   'g'
    \)
 endfunction
 function! go#uri#Decode(value) abort
    return substitute(
    \   a:value,
    \   '%\(\x\x\)',
    \   '\=nr2char(''0X'' . submatch(1))',
    \   'g'
    \)
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/go/util.vim
+++ b/pack/acp/start/vim-go/autoload/go/util.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 " PathSep returns the appropriate OS specific path separator.
 function! go#util#PathSep() abort
  if go#util#IsWin()
@ -48,7 +52,7 @@ function! go#util#IsMac() abort
  return has('mac') ||
        \ has('macunix') ||
        \ has('gui_macvim') ||
-        \ go#util#System('uname') =~? '^darwin'
+        \ go#util#Exec(['uname'])[0] =~? '^darwin'
 endfunction
 " Checks if using:
@ -59,7 +63,20 @@ function! go#util#IsUsingCygwinShell()
  return go#util#IsWin() && executable('cygpath') && &shell =~ '.*sh.*'
 endfunction
-function! go#util#has_job() abort
+" Check if Vim jobs API is supported.
 "
 " The (optional) first parameter can be added to indicate the 'cwd' or 'env'
 " parameters will be used, which wasn't added until a later version.
 function! go#util#has_job(...) abort
  if has('nvim')
    return 1
  endif
  " cwd and env parameters to job_start was added in this version.
  if a:0 > 0 && a:1 is 1
    return has('job') && has("patch-8.0.0902")
  endif
  " job was introduced in 7.4.xxx however there are multiple bug fixes and one
  " of the latest is 8.0.0087 which is required for a stable async API.
  return has('job') && has("patch-8.0.0087")
@ -93,27 +110,34 @@ endfunction
 " goarch returns 'go env GOARCH'. This is an internal function and shouldn't
 " be used. Instead use 'go#util#env("goarch")'
 function! go#util#goarch() abort
-  return substitute(go#util#System('go env GOARCH'), '\n', '', 'g')
+  return substitute(s:exec(['go', 'env', 'GOARCH'])[0], '\n', '', 'g')
 endfunction
 " goos returns 'go env GOOS'. This is an internal function and shouldn't
 " be used. Instead use 'go#util#env("goos")'
 function! go#util#goos() abort
-  return substitute(go#util#System('go env GOOS'), '\n', '', 'g')
+  return substitute(s:exec(['go', 'env', 'GOOS'])[0], '\n', '', 'g')
 endfunction
 " goroot returns 'go env GOROOT'. This is an internal function and shouldn't
 " be used. Instead use 'go#util#env("goroot")'
 function! go#util#goroot() abort
-  return substitute(go#util#System('go env GOROOT'), '\n', '', 'g')
+  return substitute(s:exec(['go', 'env', 'GOROOT'])[0], '\n', '', 'g')
 endfunction
 " gopath returns 'go env GOPATH'. This is an internal function and shouldn't
 " be used. Instead use 'go#util#env("gopath")'
 function! go#util#gopath() abort
-  return substitute(go#util#System('go env GOPATH'), '\n', '', 'g')
+  return substitute(s:exec(['go', 'env', 'GOPATH'])[0], '\n', '', 'g')
 endfunction
 " gomod returns 'go env GOMOD'. gomod changes depending on the folder. Don't
 " use go#util#env as it caches the value.
 function! go#util#gomod() abort
  return substitute(s:exec(['go', 'env', 'GOMOD'])[0], '\n', '', 'g')
 endfunction
 function! go#util#osarch() abort
  return go#util#env("goos") . '_' . go#util#env("goarch")
 endfunction
@ -124,12 +148,13 @@ endfunction
 " so that we always use a standard POSIX-compatible Bourne shell (and not e.g.
 " csh, fish, etc.) See #988 and #1276.
 function! s:system(cmd, ...) abort
-  " Preserve original shell and shellredir values
+  " Preserve original shell, shellredir and shellcmdflag values
  let l:shell = &shell
  let l:shellredir = &shellredir
  let l:shellcmdflag = &shellcmdflag
  if !go#util#IsWin() && executable('/bin/sh')
-      set shell=/bin/sh shellredir=>%s\ 2>&1
+      set shell=/bin/sh shellredir=>%s\ 2>&1 shellcmdflag=-c
  endif
  try
@ -138,6 +163,7 @@ function! s:system(cmd, ...) abort
    " Restore original values
    let &shell = l:shell
    let &shellredir = l:shellredir
    let &shellcmdflag = l:shellcmdflag
  endtry
 endfunction
@ -153,16 +179,47 @@ endfunction
 function! go#util#Exec(cmd, ...) abort
  if len(a:cmd) == 0
    call go#util#EchoError("go#util#Exec() called with empty a:cmd")
-    return
+    return ['', 1]
  endif
  let l:bin = a:cmd[0]
  " Lookup the full path, respecting settings such as 'go_bin_path'. On errors,
  " CheckBinPath will show a warning for us.
-  let l:bin = go#path#CheckBinPath(a:cmd[0])
+  let l:bin = go#path#CheckBinPath(l:bin)
  if empty(l:bin)
-    return ["", 1]
+    return ['', 1]
  endif
-  let l:out = call('s:system', [go#util#Shelljoin([l:bin] + a:cmd[1:])] + a:000)
+  " Finally execute the command using the full, resolved path. Do not pass the
  " unmodified command as the correct program might not exist in $PATH.
  return call('s:exec', [[l:bin] + a:cmd[1:]] + a:000)
 endfunction
 function! go#util#ExecInDir(cmd, ...) abort
  if !isdirectory(expand("%:p:h"))
    return ['', 1]
  endif
  let cd = exists('*haslocaldir') && haslocaldir() ? 'lcd ' : 'cd '
  let dir = getcwd()
  try
    execute cd . fnameescape(expand("%:p:h"))
    let [l:out, l:err] = call('go#util#Exec', [a:cmd] + a:000)
  finally
    execute cd . fnameescape(l:dir)
  endtry
  return [l:out, l:err]
 endfunction
 function! s:exec(cmd, ...) abort
  let l:bin = a:cmd[0]
  let l:cmd = go#util#Shelljoin([l:bin] + a:cmd[1:])
  if go#util#HasDebug('shell-commands')
    call go#util#EchoInfo('shell command: ' . l:cmd)
  endif
  let l:out = call('s:system', [l:cmd] + a:000)
  return [l:out, go#util#ShellError()]
 endfunction
@ -259,7 +316,7 @@ endfunction
 " snippetcase converts the given word to given preferred snippet setting type
 " case.
 function! go#util#snippetcase(word) abort
-  let l:snippet_case = get(g:, 'go_addtags_transform', "snakecase")
+  let l:snippet_case = go#config#AddtagsTransform()
  if l:snippet_case == "snakecase"
    return go#util#snakecase(a:word)
  elseif l:snippet_case == "camelcase"
@ -397,7 +454,73 @@ endfunction
 " Report if the user enabled a debug flag in g:go_debug.
 function! go#util#HasDebug(flag)
-  return index(get(g:, 'go_debug', []), a:flag) >= 0
+  return index(go#config#Debug(), a:flag) >= 0
 endfunction
 function! go#util#OpenBrowser(url) abort
    let l:cmd = go#config#PlayBrowserCommand()
    if len(l:cmd) == 0
        redraw
        echohl WarningMsg
        echo "It seems that you don't have general web browser. Open URL below."
        echohl None
        echo a:url
        return
    endif
    " if setting starts with a !.
    if l:cmd =~ '^!'
        let l:cmd = substitute(l:cmd, '%URL%', '\=escape(shellescape(a:url), "#")', 'g')
        silent! exec l:cmd
    elseif cmd =~ '^:[A-Z]'
        let l:cmd = substitute(l:cmd, '%URL%', '\=escape(a:url,"#")', 'g')
        exec l:cmd
    else
        let l:cmd = substitute(l:cmd, '%URL%', '\=shellescape(a:url)', 'g')
        call go#util#System(l:cmd)
    endif
 endfunction
 function! go#util#ParseErrors(lines) abort
  let errors = []
  for line in a:lines
    let fatalerrors = matchlist(line, '^\(fatal error:.*\)$')
    let tokens = matchlist(line, '^\s*\(.\{-}\):\(\d\+\):\s*\(.*\)')
    if !empty(fatalerrors)
      call add(errors, {"text": fatalerrors[1]})
    elseif !empty(tokens)
      " strip endlines of form ^M
      let out = substitute(tokens[3], '\r$', '', '')
      call add(errors, {
            \ "filename" : fnamemodify(tokens[1], ':p'),
            \ "lnum"     : tokens[2],
            \ "text"     : out,
            \ })
    elseif !empty(errors)
      " Preserve indented lines.
      " This comes up especially with multi-line test output.
      if match(line, '^\s') >= 0
        call add(errors, {"text": substitute(line, '\r$', '', '')})
      endif
    endif
  endfor
  return errors
 endfunction
 function! go#util#ShowInfo(info)
  if empty(a:info)
    return
  endif
  echo "vim-go: " | echohl Function | echon a:info | echohl None
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/gotest.vim
+++ b/pack/acp/start/vim-go/autoload/gotest.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 " Write a Go file to a temporary directory and append this directory to $GOPATH.
 "
 " The file will written to a:path, which is relative to the temporary directory,
@ -127,4 +131,8 @@ func! gotest#assert_quickfix(got, want) abort
  endwhile
 endfunc
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/autoload/unite/sources/decls.vim
+++ b/pack/acp/start/vim-go/autoload/unite/sources/decls.vim
@ -28,7 +28,7 @@ function! s:source.gather_candidates(args, context) abort
    return []
  endif
-  let l:include = get(g:, 'go_decls_includes', 'func,type')
+  let l:include = go#config#DeclsIncludes()
  let l:command = printf('%s -format vim -mode decls -include %s -%s %s', l:bin_path, l:include, l:mode, shellescape(l:path))
  let l:candidates = []
  try
--- a/pack/acp/start/vim-go/compiler/go.vim
+++ b/pack/acp/start/vim-go/compiler/go.vim
@ -9,6 +9,10 @@ if exists("g:current_compiler")
 endif
 let g:current_compiler = "go"
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 if exists(":CompilerSet") != 2
  command -nargs=* CompilerSet setlocal <args>
 endif
@ -38,4 +42,8 @@ CompilerSet errorformat+=%-G%.%#                      " All lines not matching a
 let &cpo = s:save_cpo
 unlet s:save_cpo
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/doc/vim-go.txt
+++ b/pack/acp/start/vim-go/doc/vim-go.txt
@ -38,11 +38,11 @@ and individual features can be toggled easily. vim-go leverages a number of
 tools developed by the Go community to provide a seamless Vim experience.
  * Compile your package with |:GoBuild|, install it with |:GoInstall| or
-    test it with |:GoTest|. Run a single tests with |:GoTestFunc|).
+    test it with |:GoTest|. Run a single test with |:GoTestFunc|).
  * Quickly execute your current file(s) with |:GoRun|.
  * Improved syntax highlighting and folding.
  * Debug programs with integrated `delve` support with |:GoDebugStart|.
-  * Completion support via `gocode`.
+  * Completion support via `gocode` and `gopls`.
  * `gofmt` or `goimports` on save keeps the cursor position and undo history.
  * Go to symbol/declaration with |:GoDef|.
  * Look up documentation with |:GoDoc| or |:GoDocBrowser|.
@ -76,6 +76,12 @@ tools developed by the Go community to provide a seamless Vim experience.
 ==============================================================================
 INSTALL                                                           *go-install*
 vim-go requires at least Vim 7.4.2009 or Neovim 0.3.1. On macOS, if you are
 still using your system version of vim, you can use homebrew to keep your
 version of Vim up-to-date with the following terminal command:
 >
  brew install vim
 The latest stable release, https://github.com/fatih/vim-go/releases/latest, is
 the recommended version to use. If you choose to use the master branch
 instead, please do so with caution; it is a _development_ branch.
@ -106,12 +112,13 @@ manager's install command.
 <
 *  https://github.com/gmarik/vundle >
-    Plugin 'fatih/vim-go'
+    Plugin 'fatih/vim-go', { 'do': ':GoUpdateBinaries' }
 <
 *  Manual (not recommended) >
    Copy all of the files into your `~/.vim` directory
 <
 You will also need to install all the necessary binaries. vim-go makes it easy
 to install all of them by providing a command, |:GoInstallBinaries|, to
 `go get` all the required binaries. The binaries will be installed to $GOBIN
@ -131,8 +138,12 @@ The following plugins are supported for use with vim-go:
  https://github.com/Shougo/neocomplete.vim
 * Real-time completion (Neovim and Vim 8):
-  https://github.com/Shougo/deoplete.nvim and
+  https://github.com/Shougo/deoplete.nvim
-  https://github.com/zchee/deoplete-go
+
  Add the following line to your vimrc. This instructs deoplete to use omni
  completion for Go files.
    call deoplete#custom#option('omni_patterns', { 'go': '[^. *\t]\.\w*' })
 * Display source code navigation in a sidebar:
  https://github.com/majutsushi/tagbar
@ -142,12 +153,6 @@ The following plugins are supported for use with vim-go:
  https://github.com/SirVer/ultisnips or
  https://github.com/joereynolds/vim-minisnip
 * For a better documentation viewer check out:
  https://github.com/garyburd/go-explorer
 * Integration with `delve` (Neovim only):
  https://github.com/jodosha/vim-godebug
 * Interactive |:GoDecls| and |:GoDeclsDir|:
  https://github.com/ctrlpvim/ctrlp.vim or
  https://github.com/junegunn/fzf.vim or
@ -157,6 +162,11 @@ The following plugins are supported for use with vim-go:
 ==============================================================================
 COMMANDS                                                         *go-commands*
                                                        *:GoReportGitHubIssue*
 :GoReportGitHubIssue
    GoReportGitHubIssue opens the default browser and starts a new bug report
    with useful system information.
                                                                     *:GoPath*
 :GoPath [path]
@ -187,11 +197,13 @@ COMMANDS                                                         *go-commands*
    displayed and the buffer will be untouched.
                                                                     *:GoLint*
-:GoLint [packages]
+:GoLint! [packages]
    Run golint for the directory under your current file, or for the given
    packages.
    If [!] is not given the first error is jumped to.
                                                                      *:GoDoc*
 :GoDoc [word]
@ -249,7 +261,7 @@ CTRL-]
 g<C-LeftMouse>
 <C-LeftMouse>
-    Goto declaration/definition for the declaration under the cursor. By
+    Go to declaration/definition for the identifier under the cursor. By
    default the CTRL-] shortcut, the mapping `gd` and <C-LeftMouse>,
    g<LeftMouse> are enabled to invoke :GoDef for the identifier under the
    cursor. See |'g:go_def_mapping_enabled'| to disable them. No explicit
@ -261,6 +273,14 @@ g<C-LeftMouse>
    list of file locations you have visited with :GoDef that is retained to
    help you navigate software.
    The per-window location stack is shared with |:GoDefType|.
                                                                  *:GoDefType*
 :GoDefType
    Go to type definition for the identifier under the cursor.
    The per-window location stack is shared with |:GoDef|.
                                                                 *:GoDefStack*
 :GoDefStack [number]
@ -455,7 +475,7 @@ CTRL-t
    If [!] is not given the first error is jumped to.
                                                                 *:GoErrCheck*
-:GoErrCheck [options]
+:GoErrCheck! [options]
    Check for unchecked errors in you current package. Errors are populated in
    the quickfix window.
@ -463,6 +483,8 @@ CTRL-t
    You may optionally pass any valid errcheck flags/options. See
    `errcheck -h` for a full list.
    If [!] is not given the first error is jumped to.
                                                                    *:GoFiles*
 :GoFiles [source_files]
@ -629,7 +651,7 @@ CTRL-t
    disabled it clears and stops automatic highlighting.
                                                               *:GoMetaLinter*
-:GoMetaLinter [path]
+:GoMetaLinter! [path]
    Calls the underlying `gometalinter` tool and displays all warnings and
    errors in the |quickfix| window. By default the following linters are
@ -638,16 +660,18 @@ CTRL-t
    use the variable |'g:go_metalinter_command'|. To override the maximum
    linters execution time use |'g:go_metalinter_deadline'| variable.
    If [!] is not given the first error is jumped to.
                                                                *:GoBuildTags*
 :GoBuildTags [tags]
    Changes the build tags for various commands. If you have any file that
-    uses a custom build tag, such as `//+build integration` , this command can
+    uses a custom build tag, such as `// +build integration` , this command
-    be used to pass it to all tools that accepts tags, such as guru, gorename,
+    can be used to pass it to all tools that accepts tags, such as guru,
-    etc..
+    gorename, etc.
-    The build tags is cleared (unset) if `""` is given. If no arguments is
+    The build tags is cleared (unset) if `""` is given. If no arguments are
-    given it prints the current custom build tags.
+    given it prints the current build tags.
                                                                     *:AsmFmt*
 :AsmFmt
@ -676,6 +700,12 @@ CTRL-t
        \| command! -bang AS call go#alternate#Switch(<bang>0, 'split')
    augroup END
 <
                                                                 *:GoPointsTo*
 :GoPointsTo
    Show all variables to which the pointer under the cursor may point to.
                                                                *:GoWhicherrs*
 :GoWhicherrs
@ -762,7 +792,7 @@ CTRL-t
                                                               *:GoRemoveTags*
 :[range]GoRemoveTags [key],[option] [key1],[option1] ...
-    Rmove field tags for the fields of a struct. If called inside a struct it
+    Remove field tags for the fields of a struct. If called inside a struct it
    automatically remove all field tags. An error message is given if it's
    called outside a struct definition or if the file is not correctly
    formatted
@ -789,6 +819,11 @@ CTRL-t
    Toggles |'g:go_fmt_autosave'|.
                                                     *:GoModFmtAutoSaveToggle*
 :GoModFmtAutoSaveToggle
    Toggles |'g:go_mod_fmt_autosave'|.
                                                     *:GoAsmFmtAutoSaveToggle*
 :GoAsmFmtAutoSaveToggle
@ -842,6 +877,34 @@ CTRL-t
      }
 <
                                                                    *:GoIfErr*
 :GoIfErr
    Generate if err != nil { return ... } automatically which infer the type
    of return values and the numbers.
    For example:
 >
      func doSomething() (string, error) {
          f, err := os.Open("file")
      }
 <
    Becomes:
 >
      func doSomething() (string, error) {
          f, err := os.Open("file")
          if err != nil {
              return "", err
          }
      }
 <
                                                                  *:GoModFmt*
 :GoModFmt
    Filter the current go.mod buffer through "go mod edit -fmt" command.  It
    tries to preserve cursor position and avoids replacing the buffer with
    stderr output.
 ==============================================================================
 MAPPINGS                                                        *go-mappings*
@ -1030,6 +1093,10 @@ Show send/receive corresponding to selected channel op
 Show all refs to entity denoted by selected identifier
                                                               *(go-pointsto)*
 Show all variables to which the pointer under the cursor may point to.
                                                             *(go-metalinter)*
 Calls `go-metalinter` for the current directory
@ -1050,6 +1117,14 @@ Alternates between the implementation and test code in a new vertical split
 Calls `:GoImport` for the current package
                                                                  *(go-iferr)*
 Generate if err != nil { return ... } automatically which infer the type of
 return values and the numbers.
                                                                *(go-mod-fmt)*
 Calls |:GoModFmt| for the current buffer
 ==============================================================================
 TEXT OBJECTS                                                 *go-text-objects*
@ -1070,6 +1145,12 @@ if            "inside a function", select contents of a function,
              excluding the function definition and the closing bracket. This
              text-object also supports literal functions
                                               *go-v_ac* *go-ac*
 ac            "a comment", select contents of the current comment block.
                                               *go-v_ic* *go-ic*
 ic            "inner comment", select contents of the current comment block,
              excluding the start and end comment markers.
 vim-go also defines the following text motion objects:
@ -1090,10 +1171,10 @@ FUNCTIONS                                                       *go-functions*
                                                        *go#statusline#Show()*
 Shows the status of a job running asynchronously. Can be used to plug into the
-statusline. It works to show the status per package instead of per
+statusline. It works to show the status per package instead of per file.
-file. Assume you have three files open, all belonging to the same package, if
+Assume you have three files open, all belonging to the same package, if the
-the package build (`:GoBuild`) is successful, all statusline's will show
+package build (`:GoBuild`) is successful, all statuslines will show `success`,
-`success`, if you it fails all file's statusline will show `failed`.
+if it fails all windows' statuslines will show `failed`.
 To avoid always showing old status information, the status information is
 cleaned for each package after `60` seconds. This can be changed with the
@ -1104,6 +1185,21 @@ cleaned for each package after `60` seconds. This can be changed with the
 Returns the description of the identifer under the cursor. Can be used to plug
 into the statusline.
                                                      *go#complete#Complete()*
 Uses `gopls` for autocompletion. By default, it is hooked up to |'omnifunc'|
 for Vim8 and Neovim.
                                                *go#complete#GocodeComplete()*
 Uses `gocode` for autocompletion. By default, it is hooked up to |'omnifunc'|
 for Vim 7.4.
                                                   *go#tool#DescribeBalloon()*
 Suitable to be used as an expression to show the evaluation balloon. See `help
 balloonexpr`.
 ==============================================================================
 SETTINGS                                                        *go-settings*
@ -1156,8 +1252,8 @@ updated. By default it's disabled. The delay can be configured with the
 Use this option to define the command to be used for |:GoInfo|. By default
 `gocode` is being used as it's the fastest option. But one might also use
-`guru` as it's covers more cases and is more accurate.  Current valid options
+`gopls` or `guru` as they cover more cases and are more accurate.  Current
-are: `[gocode, guru]` >
+valid options are: `[gocode, guru, gopls]` >
  let g:go_info_mode = 'gocode'
 <
@ -1231,11 +1327,19 @@ fails. By default the location list is shown. >
 Use this option to enable fmt's experimental mode. This experimental mode is
 superior to the current mode as it fully saves the undo history, so undo/redo
-doesn't break. However it's slows (creates/deletes a file for every save) and
+doesn't break. However, it's slow (creates/deletes a file for every save) and
 it's causing problems on some Vim versions. By default it's disabled. >
  let g:go_fmt_experimental = 0
 <
                                                     *'g:go_mod_fmt_autosave'*
 Use this option to auto |:GoModFmt| on save. By default it's enabled >
  let g:go_mod_fmt_autosave = 1
 <
                                               *'g:go_doc_keywordprg_enabled'*
 Use this option to run `godoc` on words under the cursor with |K|; this will
@ -1264,7 +1368,7 @@ a private internal service. Default is 'https://godoc.org'.
 Use this option to define the command to be used for |:GoDef|. By default
 `guru` is being used as it covers all edge cases. But one might also use
-`godef` as it's faster. Current valid options are: `[guru, godef]` >
+`godef` as it's faster. Current valid options are: `[guru, godef, gopls]` >
  let g:go_def_mode = 'guru'
 <
@ -1284,21 +1388,26 @@ mappings of |:GoDef|. By default it's disabled. >
  let g:go_def_reuse_buffer = 0
 <
-                                                          *'g:go_doc_command'*
+                                                             *'g:go_bin_path'*
 Command to use for |:GoDoc|; only used when invoked with a package name. The
 `gogetdoc` command is always used when |:GoDoc| is used on the identifier
 under the cursor (i.e. without argument or from |K|). >
  let g:go_doc_command = ["godoc"]
 <                                                            *'g:go_bin_path'*
 Use this option to change default path for vim-go tools when using
 |:GoInstallBinaries| and |:GoUpdateBinaries|. If not set `$GOBIN` or
 `$GOPATH/bin` is used. >
  let g:go_bin_path = ""
 <
                                                *'g:go_search_bin_path_first'*
 This option lets |'g:go_bin_path'| (or its default value) take precedence over
 $PATH when invoking a tool command such as |:GoFmt| or |:GoImports|.
 Enabling this option ensures that the binaries installed via
 |:GoInstallBinaries| and |:GoUpdateBinaries| are the same ones that are
 invoked via the tool commands.
 By default it is enabled. >
  let g:go_search_bin_path_first = 1
 <
                                                       *'g:go_snippet_engine'*
@ -1336,10 +1445,10 @@ By default it's not set, so the relevant commands defaults are being used.
 <
                                                           *'g:go_build_tags'*
-These options that will be automatically passed to the `-tags` option of
+Space-separated list of build tags passed to the `-tags` flag of tools that
-various tools, such as `guru`, `gorename`, etc... This is a permanent
+support it.
-setting. A more useful way is to use |:GoBuildTags| to dynamically change or
+There is also the |:GoBuildTags| convenience command to change or remove build
-remove build tags. By default it's not set.
+tags.
 >
  let g:go_build_tags = ''
 <
@ -1407,11 +1516,12 @@ it's empty
 <
                                                   *'g:go_metalinter_command'*
-Overrides the command to be executed when |:GoMetaLinter| is called. This is
+Overrides the command to be executed when |:GoMetaLinter| is called.  By
-an advanced settings and is for users who want to have a complete control
+default it's `gometalinter`. `golangci-lint` is also supported. It can also be
-over how `gometalinter` should be executed. By default it's empty.
+used as an advanced setting for users who want to have more control over
 the metalinter.
 >
-  let g:go_metalinter_command = ""
+  let g:go_metalinter_command = "gometalinter"
 <
                                                  *'g:go_metalinter_deadline'*
@ -1445,10 +1555,10 @@ that was called. Supported values are "", "quickfix", and "locationlist".
 Specifies the type of list to use for command outputs (such as errors from
 builds, results from static analysis commands, etc...). When an expected key
 is not present in the dictionary, |'g:go_list_type'| will be used instead.
-Supported keys are "GoBuild", "GoErrCheck", "GoFmt", "GoInstall", "GoLint",
+Supported keys are "GoBuild", "GoErrCheck", "GoFmt", "GoModFmt", "GoInstall",
-"GoMetaLinter", "GoMetaLinterAutoSave", "GoModifyTags" (used for both
+"GoLint", "GoMetaLinter", "GoMetaLinterAutoSave", "GoModifyTags" (used for
-:GoAddTags and :GoRemoveTags), "GoRename", "GoRun", and "GoTest".  Supported
+both :GoAddTags and :GoRemoveTags), "GoRename", "GoRun", and "GoTest".
-values for each command are "quickfix" and "locationlist".
+Supported values for each command are "quickfix" and "locationlist".
 >
  let g:go_list_type_commands = {}
 <
@ -1522,14 +1632,6 @@ same.
  let g:go_gorename_prefill = 'expand("<cword>") =~# "^[A-Z]"' .
        \ '? go#util#pascalcase(expand("<cword>"))' .
        \ ': go#util#camelcase(expand("<cword>"))'
 <
                                                     *'g:go_gocode_autobuild'*
 Specifies whether `gocode` should automatically build out-of-date packages
 when their source fields are modified, in order to obtain the freshest
 autocomplete results for them.  By default it is enabled.
 >
  let g:go_gocode_autobuild = 1
 <
                                              *'g:go_gocode_propose_builtins'*
@ -1537,6 +1639,14 @@ Specifies whether `gocode` should add built-in types, functions and constants
 to an autocompletion proposals. By default it is enabled.
 >
  let g:go_gocode_propose_builtins = 1
 <
                                               *'g:go_gocode_propose_source'*
 Specifies whether `gocode` should use source files instead of binary packages
 for autocompletion proposals. When disabled, only identifiers from the current
 package and packages that have been installed will proposed.
 >
  let g:go_gocode_propose_source = 0
 <
                                           *'g:go_gocode_unimported_packages'*
@ -1666,9 +1776,11 @@ A list of options to debug; useful for development and/or reporting bugs.
 Currently accepted values:
  shell-commands     Echo all shell commands that vim-go runs.
  debugger-state     Expose debugger state in 'g:go_debug_diag'.
  debugger-commands  Echo communication between vim-go and `dlv`; requests and
                     responses are recorded in `g:go_debug_commands`.
  lsp                Record lsp requests and responses in g:go_lsp_log.
 >
      let g:go_debug = []
 <
@ -1750,13 +1862,13 @@ Highlight function and method declarations.
 >
  let g:go_highlight_functions = 0
 <
-                                         *'g:go_highlight_function_arguments'*
+                                       *'g:go_highlight_function_parameters'*
-Highlight the variable names in arguments and return values in function
+Highlight the variable names in parameters (including named return parameters)
-declarations. Setting this implies the functionality from
+in function declarations. Setting this implies the functionality from
 |'g:go_highlight_functions'|.
 >
-  let g:go_highlight_function_arguments = 0
+  let g:go_highlight_function_parameters = 0
 <
                                             *'g:go_highlight_function_calls'*
@ -1828,6 +1940,13 @@ filetype.
 The `gohtmltmpl` filetype is automatically set for `*.tmpl` files; the
 `gotexttmpl` is never automatically set and needs to be set manually.
 ==============================================================================
                                                    *gomod* *ft-gomod-syntax*
 go.mod file syntax~
 The `gomod` 'filetype' provides syntax highlighting for Go's module file
 `go.mod`
 ==============================================================================
 DEBUGGER                                                            *go-debug*
@ -1847,10 +1966,10 @@ features:
  * Toggle breakpoint.
  * Stack operation continue/next/step out.
-This feature requires Vim 8.0.0087 or newer with the |+job| feature. Neovim
+This feature requires either Vim 8.0.0087 or newer with the |+job| feature or
-does _not_ work (yet).
+Neovim. This features also requires Delve 1.0.0 or newer, and it is
-This requires Delve 1.0.0 or newer, and it is recommended to use Go 1.10 or
+recommended to use Go 1.10 or newer, as its new caching will speed up
-newer, as its new caching will speed up recompiles.
+recompiles.
                                                              *go-debug-intro*
 GETTING STARTED WITH THE DEBUGGER~
@ -2035,6 +2154,24 @@ Defaults to `127.0.0.1:8181`:
  let g:go_debug_address = '127.0.0.1:8181'
 <
                                                     *'g:go_debug_log_output'*
 Specifies log output options for `dlv`. Value should be a single string 
 of comma-separated options suitable for passing to `dlv`.  An empty string 
 (`''`) will suppress logging entirely.
 Default: `'debugger, rpc'`:
 >
  let g:go_debug_log = 'debugger, rpc'
 <
                                                     *'g:go_highlight_debug'*
 Highlight the current line and breakpoints in the debugger.
 >
  let g:go_highlight_debug = 1
 <
 ==============================================================================
 FAQ TROUBLESHOOTING                                     *go-troubleshooting*
@ -2067,7 +2204,7 @@ Many vim-go commands use the `guru` commandline tool to get information. Some
 a reasonable amount of performance `guru` limits this analysis to a selected
 list of packages. This is known as the "guru scope".
-The default is to use the package the curent buffer belongs to, but this may
+The default is to use the package the current buffer belongs to, but this may
 not always be correct. For example for the file `guthub.com/user/pkg/a/a.go`
 the scope will be set to `github.com/user/pkg/a`, but you probably want
 `github.com/user/pkg`
@ -2093,11 +2230,22 @@ Also see |:GoGuruScope| and |'g:go_guru_scope'|.
 Vim becomes slow while editing Go files~
-This is usually caused by `g:go_highlight_*` options. Try disabling them if
+The most common cause for this is using an older version of Vim that doesn't
-you've enabled some of them.
+support asynchronous jobs. |'g:go_auto_sameids'| and |'g:go_auto_type_info'|
 run jobs that can cause noticable delays when used with vim74. The problem is
 most pronounced on vim74, but can occur on vim8 and nvim. On vim8 and nvim,
 the problem should be restricted to a short period when the first buffer in a
 package is first loaded.
-Other common culprits are |'g:go_auto_sameids'| and |go#statusline#Show()|.
+If you see unexpected characters rendered in the current window, the problem
 is most likely due to |'g:go_auto_sameids'| or |'g:go_auto_type_info'|. First,
 try using another mode for |'g:go_info_mode'|. If that doesn't work, try
 disabling |'g:go_auto_sameids'| and |'g:go_auto_type_info'|.
 To a lesser extent, this can be caused by `g:go_highlight_*` options. If Vim
 is just slower than normal, but doesn't render unexpected characters in the
 currrent window, then the problem is most likely the `g:go_highlight_*`
 options. Try disabling them if you've enabled some of them.
 I get errors when using GoInstallBinaries~
@ -2165,9 +2313,9 @@ Using with NeoVim~
 Note: Neovim currently is not a first class citizen for vim-go. You are free
 to open bug, however I'm not using Neovim so it's hard for me to test it.
-vim-go might not work well as good as in Vim. I'm happy to accept pull
+vim-go might not work as well in Neovim as it does in Vim. I'm happy to accept
-requests or very detailed bug reports. If you're interested to improve the
+pull requests or very detailed bug reports. If you're interested to improve
-state of Neovim in vim-go you're always welcome!
+the state of Neovim in vim-go you're always welcome!
 Run `:GoRun` in a new tab, horizontal split or vertical split terminal
 >
@ -2180,6 +2328,18 @@ By default new terminals are opened in a vertical split. To change it
 let g:go_term_mode = "split"
 >
 How can I customize the highlighting?~
 All the highlight groups used by vim-go are prefixed with `go` (e.g.
 `goType`) and are defined in the files in the `syntax` directory. To change
 the highlighting for any group, add a `highlight` command for the group to
 your vimrc.  To turn off the highlighting for any group, add `highlight link
 group-name NONE` (where `group-name` is the name of the group whose highlight
 you'd like to turn off) to your vimrc.
 Some people may wish to highlight Go's builtins as keywords. To do so, one
 should simply add `highlight link goBuiltins Keyword` to the `vimrc` file.
 ==============================================================================
 DEVELOPMENT                                               *go-development*
@ -2215,14 +2375,14 @@ You can install and test all Vim versions by running `make`.
 DONATION                                                         *go-donation*
 People have asked for this for a long time, now you can be a fully supporter
-by being a patreon at: https://www.patreon.com/fatih
+by being a patreon at: https://www.patreon.com/bhcleek
 By being a patron, you are enabling vim-go to grow and mature, helping me to
 invest in bug fixes, new documentation, and improving both current and future
 features. It's completely optional and is just a direct way to support
 vim-go's ongoing development. Thanks!
-Check it out: https://www.patreon.com/fatih
+Check it out: https://www.patreon.com/bhcleek
 ==============================================================================
--- a/pack/acp/start/vim-go/ftdetect/gofiletype.vim
+++ b/pack/acp/start/vim-go/ftdetect/gofiletype.vim
@ -1,34 +1,40 @@
 " vint: -ProhibitAutocmdWithNoGroup
-" We take care to preserve the user's fileencodings and fileformats,
+" don't spam the user when Vim is started in Vi compatibility mode
-" because those settings are global (not buffer local), yet we want
+let s:cpo_save = &cpo
-" to override them for loading Go files, which are defined to be UTF-8.
+set cpo&vim
 let s:current_fileformats = ''
 let s:current_fileencodings = ''
 " define fileencodings to open as utf-8 encoding even if it's ascii.
 function! s:gofiletype_pre(type)
  let s:current_fileformats = &g:fileformats
  let s:current_fileencodings = &g:fileencodings
  set fileencodings=utf-8 fileformats=unix
  let &l:filetype = a:type
 endfunction
 " restore fileencodings as others
 function! s:gofiletype_post()
  let &g:fileformats = s:current_fileformats
  let &g:fileencodings = s:current_fileencodings
 endfunction
 " Note: should not use augroup in ftdetect (see :help ftdetect)
-au BufNewFile *.go setfiletype go | setlocal fileencoding=utf-8 fileformat=unix
+au BufRead,BufNewFile *.go setfiletype go
-au BufRead *.go call s:gofiletype_pre("go")
+au BufRead,BufNewFile *.s setfiletype asm
-au BufReadPost *.go call s:gofiletype_post()
+au BufRead,BufNewFile *.tmpl setfiletype gohtmltmpl
-au BufNewFile *.s setfiletype asm | setlocal fileencoding=utf-8 fileformat=unix
+" remove the autocommands for modsim3, and lprolog files so that their
-au BufRead *.s call s:gofiletype_pre("asm")
+" highlight groups, syntax, etc. will not be loaded. *.MOD is included, so
-au BufReadPost *.s call s:gofiletype_post()
+" that on case insensitive file systems the module2 autocmds will not be
 " executed.
 au! BufRead,BufNewFile *.mod,*.MOD
 " Set the filetype if the first non-comment and non-blank line starts with
 " 'module <path>'.
 au BufRead,BufNewFile go.mod call s:gomod()
-au BufRead,BufNewFile *.tmpl set filetype=gohtmltmpl
+fun! s:gomod()
  for l:i in range(1, line('$'))
    let l:l = getline(l:i)
    if l:l ==# '' || l:l[:1] ==# '//'
      continue
    endif
    if l:l =~# '^module .\+'
      setfiletype gomod
    endif
    break
  endfor
 endfun
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/ftplugin/asm.vim
+++ b/pack/acp/start/vim-go/ftplugin/asm.vim
@ -5,7 +5,12 @@ if exists("b:did_ftplugin")
 endif
 let b:did_ftplugin = 1
-let b:undo_ftplugin = "setl fo< com< cms<"
+" don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 let b:undo_ftplugin = "setl fo< com< cms<
      \ | exe 'au! vim-go-asm-buffer * <buffer>'"
 setlocal formatoptions-=t
@ -16,4 +21,17 @@ setlocal noexpandtab
 command! -nargs=0 AsmFmt call go#asmfmt#Format()
 " Autocommands
 " ============================================================================
 augroup vim-go-asm-buffer
  autocmd! * <buffer>
  autocmd BufWritePre <buffer> call go#auto#asmfmt_autosave()
 augroup end
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/ftplugin/go.vim
+++ b/pack/acp/start/vim-go/ftplugin/go.vim
@ -9,7 +9,12 @@ if exists("b:did_ftplugin")
 endif
 let b:did_ftplugin = 1
-let b:undo_ftplugin = "setl fo< com< cms<"
+" don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 let b:undo_ftplugin = "setl fo< com< cms<
      \ | exe 'au! vim-go-buffer * <buffer>'"
 setlocal formatoptions-=t
@ -20,8 +25,11 @@ setlocal noexpandtab
 compiler go
-" Set gocode completion
+" Set autocompletion
 setlocal omnifunc=go#complete#Complete
 if !go#util#has_job()
  setlocal omnifunc=go#complete#GocodeComplete
 endif
 if get(g:, "go_doc_keywordprg_enabled", 1)
  " keywordprg doesn't allow to use vim commands, override it
@ -35,18 +43,24 @@ if get(g:, "go_def_mapping_enabled", 1)
  nnoremap <buffer> <silent> <C-]> :GoDef<cr>
  nnoremap <buffer> <silent> <C-LeftMouse> <LeftMouse>:GoDef<cr>
  nnoremap <buffer> <silent> g<LeftMouse> <LeftMouse>:GoDef<cr>
-  nnoremap <buffer> <silent> <C-w><C-]> :<C-u>call go#def#Jump("split")<CR>
+  nnoremap <buffer> <silent> <C-w><C-]> :<C-u>call go#def#Jump("split", 0)<CR>
-  nnoremap <buffer> <silent> <C-w>] :<C-u>call go#def#Jump("split")<CR>
+  nnoremap <buffer> <silent> <C-w>] :<C-u>call go#def#Jump("split", 0)<CR>
  nnoremap <buffer> <silent> <C-t> :<C-U>call go#def#StackPop(v:count1)<cr>
 endif
 if get(g:, "go_textobj_enabled", 1)
  onoremap <buffer> <silent> af :<c-u>call go#textobj#Function('a')<cr>
  onoremap <buffer> <silent> if :<c-u>call go#textobj#Function('i')<cr>
  xnoremap <buffer> <silent> af :<c-u>call go#textobj#Function('a')<cr>
  onoremap <buffer> <silent> if :<c-u>call go#textobj#Function('i')<cr>
  xnoremap <buffer> <silent> if :<c-u>call go#textobj#Function('i')<cr>
  onoremap <buffer> <silent> ac :<c-u>call go#textobj#Comment('a')<cr>
  xnoremap <buffer> <silent> ac :<c-u>call go#textobj#Comment('a')<cr>
  onoremap <buffer> <silent> ic :<c-u>call go#textobj#Comment('i')<cr>
  xnoremap <buffer> <silent> ic :<c-u>call go#textobj#Comment('i')<cr>
  " Remap ]] and [[ to jump betweeen functions as they are useless in Go
  nnoremap <buffer> <silent> ]] :<c-u>call go#textobj#FunctionJump('n', 'next')<cr>
  nnoremap <buffer> <silent> [[ :<c-u>call go#textobj#FunctionJump('n', 'prev')<cr>
@ -58,76 +72,60 @@ if get(g:, "go_textobj_enabled", 1)
  xnoremap <buffer> <silent> [[ :<c-u>call go#textobj#FunctionJump('v', 'prev')<cr>
 endif
-if get(g:, "go_auto_type_info", 0) || get(g:, "go_auto_sameids", 0)
+if go#config#AutoTypeInfo() || go#config#AutoSameids()
  let &l:updatetime= get(g:, "go_updatetime", 800)
 endif
-" NOTE(arslan): experimental, disabled by default, doesn't work well. No
+" Autocommands
-" documentation as well. If anyone feels adventurous, enable the following and
+" ============================================================================
 " try to search for Go identifiers ;)
 "
-" if get(g:, "go_sameid_search_enabled", 0)
+augroup vim-go-buffer
-"   autocmd FileType go nnoremap <buffer> <silent> * :<c-u>call Sameids_search(0)<CR>
+  autocmd! * <buffer>
 "   autocmd FileType go nnoremap <buffer> <silent> # :<c-u>call Sameids_search(1)<CR>
 "   autocmd FileType go nnoremap <buffer> <silent> n :<c-u>call Sameids_repeat(0)<CR>
 "   autocmd FileType go nnoremap <buffer> <silent> N :<c-u>call Sameids_repeat(1)<CR>
 "   autocmd FileType go cabbrev nohlsearch <C-r>=Sameids_nohlsearch()<CR>
 " endif
-" " mode 0: next 1: prev
+  " The file is registered (textDocument/DidOpen) with gopls in in
-" function! Sameids_repeat(mode)
+  " plugin/go.vim on the FileType event.
-"   let matches = getmatches()
+  " TODO(bc): handle all the other events that may be of interest to gopls,
-"   if empty(matches)
+  " too (e.g.  BufFilePost , CursorHold , CursorHoldI, FileReadPost,
-"     return
+  " StdinReadPre, BufWritePost, TextChange, TextChangedI)
-"   endif
+  if go#util#has_job()
-"   let cur_offset = go#util#OffsetCursor()
+    autocmd BufWritePost <buffer> call go#lsp#DidChange(expand('<afile>:p'))
    autocmd FileChangedShell <buffer> call go#lsp#DidChange(expand('<afile>:p'))
    autocmd BufDelete <buffer> call go#lsp#DidClose(expand('<afile>:p'))
  endif
-"   " reverse list to make it easy to find the prev occurrence
+  autocmd CursorHold <buffer> call go#auto#auto_type_info()
-"   if a:mode
+  autocmd CursorHold <buffer> call go#auto#auto_sameids()
 "    call reverse(matches)
 "   endif
-"   for m in matches
+  " Echo the identifier information when completion is done. Useful to see
-"     if !has_key(m, "group")
+  " the signature of a function, etc...
-"       return
+  if exists('##CompleteDone')
-"     endif
+    autocmd CompleteDone <buffer> call go#auto#echo_go_info()
  endif
-"     if m.group != "goSameId"
+  autocmd BufWritePre <buffer> call go#auto#fmt_autosave()
-"       return
+  autocmd BufWritePost <buffer> call go#auto#metalinter_autosave()
 "     endif
-"     let offset = go#util#Offset(m.pos1[0], m.pos1[1])
+  " clear SameIds when the buffer is unloaded so that loading another buffer
  " in the same window doesn't highlight the most recently matched
  " identifier's positions.
  autocmd BufWinEnter <buffer> call go#guru#ClearSameIds()
-"     if a:mode && cur_offset > offset
+  autocmd BufEnter <buffer>
-"       call cursor(m.pos1[0], m.pos1[1])
+        \  if go#config#AutodetectGopath() && !exists('b:old_gopath')
-"       return
+        \|   let b:old_gopath = exists('$GOPATH') ? $GOPATH : -1
-"     elseif !a:mode && cur_offset < offset
+        \|   let $GOPATH = go#path#Detect()
-"       call cursor(m.pos1[0], m.pos1[1])
+        \| endif
-"       return
+  autocmd BufLeave <buffer>
-"     endif
+        \  if exists('b:old_gopath')
-"   endfor
+        \|   if b:old_gopath isnot -1
        \|     let $GOPATH = b:old_gopath
        \|   endif
        \|   unlet b:old_gopath
        \| endif
 augroup end
-"   " reached start/end, jump to the end/start
+" restore Vi compatibility settings
-"   let initial_match = matches[0]
+let &cpo = s:cpo_save
-"   if !has_key(initial_match, "group")
+unlet s:cpo_save
 "     return
 "   endif
 "   if initial_match.group != "goSameId"
 "     return
 "   endif
 "   call cursor(initial_match.pos1[0], initial_match.pos1[1])
 " endfunction
 " function! Sameids_search(mode)
 "   call go#guru#SameIds()
 "   call Sameids_repeat(a:mode)
 " endfunction
 " function! Sameids_nohlsearch()
 "   call go#guru#ClearSameIds()
 "   return "nohlsearch"
 " endfunction
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/ftplugin/go/commands.vim
+++ b/pack/acp/start/vim-go/ftplugin/go/commands.vim
@ -4,6 +4,7 @@ command! -nargs=? -complete=customlist,go#rename#Complete GoRename call go#renam
 " -- guru
 command! -nargs=* -complete=customlist,go#package#Complete GoGuruScope call go#guru#Scope(<f-args>)
 command! -range=% GoImplements call go#guru#Implements(<count>)
 command! -range=% GoPointsTo call go#guru#PointsTo(<count>)
 command! -range=% GoWhicherrs call go#guru#Whicherrs(<count>)
 command! -range=% GoCallees call go#guru#Callees(<count>)
 command! -range=% GoDescribe call go#guru#Describe(<count>)
@ -13,19 +14,22 @@ command! -range=% GoFreevars call go#guru#Freevars(<count>)
 command! -range=% GoChannelPeers call go#guru#ChannelPeers(<count>)
 command! -range=% GoReferrers call go#guru#Referrers(<count>)
-command! -range=0 GoSameIds call go#guru#SameIds()
+command! -range=0 GoSameIds call go#guru#SameIds(1)
 command! -range=0 GoSameIdsClear call go#guru#ClearSameIds()
 command! -range=0 GoSameIdsToggle call go#guru#ToggleSameIds()
-command! -range=0 GoSameIdsAutoToggle call go#guru#AutoToogleSameIds()
+command! -range=0 GoSameIdsAutoToggle call go#guru#AutoToggleSameIds()
 " -- tags
 command! -nargs=* -range GoAddTags call go#tags#Add(<line1>, <line2>, <count>, <f-args>)
 command! -nargs=* -range GoRemoveTags call go#tags#Remove(<line1>, <line2>, <count>, <f-args>)
 " -- mod
 command! -nargs=0 -range GoModFmt call go#mod#Format()
 " -- tool
 command! -nargs=* -complete=customlist,go#tool#ValidFiles GoFiles echo go#tool#Files(<f-args>)
 command! -nargs=0 GoDeps echo go#tool#Deps()
-command! -nargs=* GoInfo call go#tool#Info(0)
+command! -nargs=0 GoInfo call go#tool#Info(1)
 command! -nargs=0 GoAutoTypeInfoToggle call go#complete#ToggleAutoTypeInfo()
 " -- cmd
@ -50,7 +54,8 @@ command! -nargs=* -bang GoCoverageBrowser call go#coverage#Browser(<bang>0, <f-a
 command! -nargs=0 -range=% GoPlay call go#play#Share(<count>, <line1>, <line2>)
 " -- def
-command! -nargs=* -range GoDef :call go#def#Jump('')
+command! -nargs=* -range GoDef :call go#def#Jump('', 0)
 command! -nargs=* -range GoDefType :call go#def#Jump('', 1)
 command! -nargs=? GoDefPop :call go#def#StackPop(<f-args>)
 command! -nargs=? GoDefStack :call go#def#Stack(<f-args>)
 command! -nargs=? GoDefStackClear :call go#def#StackClear(<f-args>)
@ -73,11 +78,11 @@ command! -nargs=1 -bang -complete=customlist,go#package#Complete GoImport call g
 command! -nargs=* -bang -complete=customlist,go#package#Complete GoImportAs call go#import#SwitchImport(1, <f-args>, '<bang>')
 " -- linters
-command! -nargs=* GoMetaLinter call go#lint#Gometa(0, <f-args>)
+command! -nargs=* -bang GoMetaLinter call go#lint#Gometa(<bang>0, 0, <f-args>)
 command! -nargs=0 GoMetaLinterAutoSaveToggle call go#lint#ToggleMetaLinterAutoSave()
-command! -nargs=* GoLint call go#lint#Golint(<f-args>)
+command! -nargs=* -bang GoLint call go#lint#Golint(<bang>0, <f-args>)
 command! -nargs=* -bang GoVet call go#lint#Vet(<bang>0, <f-args>)
-command! -nargs=* -complete=customlist,go#package#Complete GoErrCheck call go#lint#Errcheck(<f-args>)
+command! -nargs=* -bang -complete=customlist,go#package#Complete GoErrCheck call go#lint#Errcheck(<bang>0, <f-args>)
 " -- alternate
 command! -bang GoAlternate call go#alternate#Switch(<bang>0, '')
@ -105,4 +110,10 @@ if !exists(':GoDebugStart')
  command! -nargs=? GoDebugBreakpoint call go#debug#Breakpoint(<f-args>)
 endif
 " -- issue
 command! -nargs=0 GoReportGitHubIssue call go#issue#New()
 " -- iferr
 command! -nargs=0 GoIfErr call go#iferr#Generate()
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/ftplugin/go/mappings.vim
+++ b/pack/acp/start/vim-go/ftplugin/go/mappings.vim
@ -31,7 +31,7 @@ nnoremap <silent> <Plug>(go-coverage-browser) :<C-u>call go#coverage#Browser(!g:
 nnoremap <silent> <Plug>(go-files) :<C-u>call go#tool#Files()<CR>
 nnoremap <silent> <Plug>(go-deps) :<C-u>call go#tool#Deps()<CR>
-nnoremap <silent> <Plug>(go-info) :<C-u>call go#tool#Info(0)<CR>
+nnoremap <silent> <Plug>(go-info) :<C-u>call go#tool#Info(1)<CR>
 nnoremap <silent> <Plug>(go-import) :<C-u>call go#import#SwitchImport(1, '', expand('<cword>'), '')<CR>
 nnoremap <silent> <Plug>(go-imports) :<C-u>call go#fmt#Format(1)<CR>
@ -43,16 +43,25 @@ nnoremap <silent> <Plug>(go-callstack) :<C-u>call go#guru#Callstack(-1)<CR>
 xnoremap <silent> <Plug>(go-freevars) :<C-u>call go#guru#Freevars(0)<CR>
 nnoremap <silent> <Plug>(go-channelpeers) :<C-u>call go#guru#ChannelPeers(-1)<CR>
 nnoremap <silent> <Plug>(go-referrers) :<C-u>call go#guru#Referrers(-1)<CR>
-nnoremap <silent> <Plug>(go-sameids) :<C-u>call go#guru#SameIds()<CR>
+nnoremap <silent> <Plug>(go-sameids) :<C-u>call go#guru#SameIds(1)<CR>
 nnoremap <silent> <Plug>(go-pointsto) :<C-u>call go#guru#PointsTo(-1)<CR>
 nnoremap <silent> <Plug>(go-whicherrs) :<C-u>call go#guru#Whicherrs(-1)<CR>
 nnoremap <silent> <Plug>(go-sameids-toggle) :<C-u>call go#guru#ToggleSameIds()<CR>
 nnoremap <silent> <Plug>(go-rename) :<C-u>call go#rename#Rename(!g:go_jump_to_error)<CR>
-nnoremap <silent> <Plug>(go-def) :<C-u>call go#def#Jump('')<CR>
+nnoremap <silent> <Plug>(go-decls) :<C-u>call go#decls#Decls(0, '')<CR>
-nnoremap <silent> <Plug>(go-def-vertical) :<C-u>call go#def#Jump("vsplit")<CR>
+nnoremap <silent> <Plug>(go-decls-dir) :<C-u>call go#decls#Decls(1, '')<CR>
-nnoremap <silent> <Plug>(go-def-split) :<C-u>call go#def#Jump("split")<CR>
+
-nnoremap <silent> <Plug>(go-def-tab) :<C-u>call go#def#Jump("tab")<CR>
+nnoremap <silent> <Plug>(go-def) :<C-u>call go#def#Jump('', 0)<CR>
 nnoremap <silent> <Plug>(go-def-vertical) :<C-u>call go#def#Jump("vsplit", 0)<CR>
 nnoremap <silent> <Plug>(go-def-split) :<C-u>call go#def#Jump("split", 0)<CR>
 nnoremap <silent> <Plug>(go-def-tab) :<C-u>call go#def#Jump("tab", 0)<CR>
 nnoremap <silent> <Plug>(go-def-type) :<C-u>call go#def#Jump('', 1)<CR>
 nnoremap <silent> <Plug>(go-def-type-vertical) :<C-u>call go#def#Jump("vsplit", 1)<CR>
 nnoremap <silent> <Plug>(go-def-type-split) :<C-u>call go#def#Jump("split", 1)<CR>
 nnoremap <silent> <Plug>(go-def-type-tab) :<C-u>call go#def#Jump("tab", 1)<CR>
 nnoremap <silent> <Plug>(go-def-pop) :<C-u>call go#def#StackPop()<CR>
 nnoremap <silent> <Plug>(go-def-stack) :<C-u>call go#def#Stack()<CR>
@ -64,12 +73,14 @@ nnoremap <silent> <Plug>(go-doc-vertical) :<C-u>call go#doc#Open("vnew", "vsplit
 nnoremap <silent> <Plug>(go-doc-split) :<C-u>call go#doc#Open("new", "split")<CR>
 nnoremap <silent> <Plug>(go-doc-browser) :<C-u>call go#doc#OpenBrowser()<CR>
-nnoremap <silent> <Plug>(go-metalinter) :<C-u>call go#lint#Gometa(0)<CR>
+nnoremap <silent> <Plug>(go-metalinter) :<C-u>call go#lint#Gometa(!g:go_jump_to_error, 0)<CR>
-nnoremap <silent> <Plug>(go-lint) :<C-u>call go#lint#Golint()<CR>
+nnoremap <silent> <Plug>(go-lint) :<C-u>call go#lint#Golint(!g:go_jump_to_error)<CR>
 nnoremap <silent> <Plug>(go-vet) :<C-u>call go#lint#Vet(!g:go_jump_to_error)<CR>
 nnoremap <silent> <Plug>(go-alternate-edit) :<C-u>call go#alternate#Switch(0, "edit")<CR>
 nnoremap <silent> <Plug>(go-alternate-vertical) :<C-u>call go#alternate#Switch(0, "vsplit")<CR>
 nnoremap <silent> <Plug>(go-alternate-split) :<C-u>call go#alternate#Switch(0, "split")<CR>
 nnoremap <silent> <Plug>(go-iferr) :<C-u>call go#iferr#Generate()<CR>
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/ftplugin/go/snippets.vim
+++ b/pack/acp/start/vim-go/ftplugin/go/snippets.vim
@ -1,3 +1,7 @@
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 if exists("g:go_loaded_gosnippets")
  finish
 endif
@ -47,7 +51,7 @@ function! s:GoMinisnip() abort
 endfunction
-let s:engine = get(g:, 'go_snippet_engine', 'automatic')
+let s:engine = go#config#SnippetEngine()
 if s:engine is? "automatic"
  if get(g:, 'did_plugin_ultisnips') is 1
    call s:GoUltiSnips()
@ -64,4 +68,8 @@ elseif s:engine is? "minisnip"
  call s:GoMinisnip()
 endif
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/ftplugin/go/tagbar.vim
+++ b/pack/acp/start/vim-go/ftplugin/go/tagbar.vim
@ -9,6 +9,10 @@ elseif globpath(&rtp, 'plugin/tagbar.vim') == ""
  finish
 endif
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 if !exists("g:go_gotags_bin")
  let g:go_gotags_bin = "gotags"
 endif
@ -54,4 +58,8 @@ endfunction
 call s:SetTagbar()
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/ftplugin/gomod.vim
+++ b/pack/acp/start/vim-go/ftplugin/gomod.vim
@ -0,0 +1,33 @@
 " gomod.vim: Vim filetype plugin for Go assembler.
 if exists("b:did_ftplugin")
  finish
 endif
 let b:did_ftplugin = 1
 " don't spam the user when Vim is started in Vi compatibility mode
 let s:cpo_save = &cpo
 set cpo&vim
 let b:undo_ftplugin = "setl fo< com< cms<
      \ | exe 'au! vim-go-gomod-buffer * <buffer>'"
 setlocal formatoptions-=t
 setlocal comments=s1:/*,mb:*,ex:*/,://
 setlocal commentstring=//\ %s
 " Autocommands
 " ============================================================================
 augroup vim-go-gomod-buffer
  autocmd! * <buffer>
  autocmd BufWritePre <buffer> call go#auto#modfmt_autosave()
 augroup end
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/pack/acp/start/vim-go/ftplugin/gomod/commands.vim
+++ b/pack/acp/start/vim-go/ftplugin/gomod/commands.vim
@ -0,0 +1,3 @@
 command! -nargs=0 -range GoModFmt call go#mod#Format()
 command! -nargs=0 GoModFmtAutoSaveToggle call go#mod#ToggleModFmtAutoSave()
--- a/pack/acp/start/vim-go/ftplugin/gomod/mappings.vim
+++ b/pack/acp/start/vim-go/ftplugin/gomod/mappings.vim
@ -0,0 +1 @@
 nnoremap <silent> <Plug>(go-mod-fmt) :<C-u>call go#mod#Format()<CR>
--- a/pack/acp/start/vim-go/gosnippets/UltiSnips/go.snippets
+++ b/pack/acp/start/vim-go/gosnippets/UltiSnips/go.snippets
@ -169,7 +169,7 @@ endsnippet
 # error multiple return
 snippet errn, "Error return with two return values" !b
 if err != nil {
-	return ${1:nil}, err
+	return ${1:nil}, ${2:err}
 }
 ${0}
 endsnippet
@ -363,6 +363,28 @@ func Test${1:Function}(t *testing.T) {
 }
 endsnippet
 # test table snippet
 snippet tt
 var tests = []struct {
 	name string
 	expected string
 	given string
 }{
 	{"${1}", "${2}", "${3}",},
 }
 for _, tt := range tests {
 	tt := tt
 	t.Run(tt.name, func(t *testing.T){
 		actual := ${0:${VISUAL}}(tt.given)
 		if actual != tt.expected {
 				t.Errorf("$0(%s): expected %s, actual %s", tt.given, tt.expected, actual)
 		}
 	})
 }
 endsnippet
 snippet hf "http.HandlerFunc" !b
 func ${1:handler}(w http.ResponseWriter, r *http.Request) {
 	${0:fmt.Fprintf(w, "hello world")}
--- a/pack/acp/start/vim-go/gosnippets/minisnip/_go_tt
+++ b/pack/acp/start/vim-go/gosnippets/minisnip/_go_tt
@ -0,0 +1,17 @@
 var tests = []struct {
 	name string
 	expected string
 	given string
 }{
 	{"", "", "",},
 }
 for _, tt := range tests {
 	tt := tt
 	t.Run(tt.name, func(t *testing.T){
 		actual := {{++}}(tt.given)
 		if actual != tt.expected {
 				t.Errorf("{{+~\~1+}}(%s): expected %s, actual %s", tt.given, tt.expected, actual)
 		}
 	})
 }
--- a/pack/acp/start/vim-go/gosnippets/snippets/go.snip
+++ b/pack/acp/start/vim-go/gosnippets/snippets/go.snip
@ -315,6 +315,25 @@ abbr func TestXYZ(t *testing.T) { ... }
 	func Test${1:Function}(t *testing.T) {
 		${0}
 	}
 # test table snippet
 snippet tt
 abbr var test = {...}{...} for {t.Run(){...}}
    var tests = []struct {
        name string
        expected string
        given string
    }{
        {"${2}", "${3}", "${4}",},
    }
    for _, tt := range tests {
        tt := tt
        t.Run(tt.name, func(t *testing.T){
            actual := ${1:Function}(tt.given)
            if actual != tt.expected {
                t.Errorf("given(%s): expected %s, actual %s", tt.given, tt.expected, actual)
            }
        })
    }
 # test server
 snippet tsrv
 abbr ts := httptest.NewServer(...)
--- a/pack/acp/start/vim-go/indent/go.vim
+++ b/pack/acp/start/vim-go/indent/go.vim
@ -24,18 +24,11 @@ if exists("*GoIndent")
  finish
 endif
-" use shiftwidth function only if it's available
+" don't spam the user when Vim is started in Vi compatibility mode
-if exists('*shiftwidth')
+let s:cpo_save = &cpo
-  func s:sw()
+set cpo&vim
    return shiftwidth()
  endfunc
 else
  func s:sw()
    return &sw
  endfunc
 endif
-function! GoIndent(lnum)
+function! GoIndent(lnum) abort
  let prevlnum = prevnonblank(a:lnum-1)
  if prevlnum == 0
    " top of file
@ -49,19 +42,30 @@ function! GoIndent(lnum)
  let ind = previ
  for synid in synstack(a:lnum, 1)
    if synIDattr(synid, 'name') == 'goRawString'
      if prevl =~ '\%(\%(:\?=\)\|(\|,\)\s*`[^`]*$'
        " previous line started a multi-line raw string
        return 0
      endif
      " return -1 to keep the current indent.
      return -1
    endif
  endfor
  if prevl =~ '[({]\s*$'
    " previous line opened a block
-    let ind += s:sw()
+    let ind += shiftwidth()
  endif
  if prevl =~# '^\s*\(case .*\|default\):$'
    " previous line is part of a switch statement
-    let ind += s:sw()
+    let ind += shiftwidth()
  endif
  " TODO: handle if the previous line is a label.
  if thisl =~ '^\s*[)}]'
    " this line closed a block
-    let ind -= s:sw()
+    let ind -= shiftwidth()
  endif
  " Colons are tricky.
@ -69,10 +73,14 @@ function! GoIndent(lnum)
  " We ignore trying to deal with jump labels because (a) they're rare, and
  " (b) they're hard to disambiguate from a composite literal key.
  if thisl =~# '^\s*\(case .*\|default\):$'
-    let ind -= s:sw()
+    let ind -= shiftwidth()
  endif
  return ind
 endfunction
 " restore Vi compatibility settings
 let &cpo = s:cpo_save
 unlet s:cpo_save
 " vim: sw=2 ts=2 et
--- a/Show more
+++ b/Show more
		`@ -0,0 +1,3 @@`
							`command! -nargs=0 -range GoModFmt call go#mod#Format()`

							`command! -nargs=0 GoModFmtAutoSaveToggle call go#mod#ToggleModFmtAutoSave()`
		`@ -0,0 +1 @@`
							`nnoremap <silent> <Plug>(go-mod-fmt) :<C-u>call go#mod#Format()<CR>`