1 安装

https://github.com/fatih/vim-go

2 使用

2.1 版本提示

vim-go requires at least Vim 8.1.2269 or Neovim 0.4.0, but you're using an older version.
Please update your Vim for the best vim-go experience.
If you really want to continue you can set this to make the error go away:
    let g:go_version_warning = 0
Note that some features may error out or behave incorrectly.
Please do not report bugs unless you're using at least Vim 8.1.2269 or Neovim 0.4.0.

在 .vimrc 添加

let g:go_version_warning = 0

2.2 函数提示

vim-go: could not find 'gopls'. Run :GoInstallBinaries to fix it

打开vim-go项目目录下的plugin/go.vim可以找到：

" these packages are used by vim-go and can be automatically installed if
" needed by the user with GoInstallBinaries.
let s:packages = {
      \ 'asmfmt':        ['github.com/klauspost/asmfmt/cmd/asmfmt'],
      \ 'dlv':           ['github.com/go-delve/delve/cmd/dlv'],
      \ 'errcheck':      ['github.com/kisielk/errcheck'],
      \ 'fillstruct':    ['github.com/davidrjenni/reftools/cmd/fillstruct'],
      \ 'gocode':        ['github.com/mdempsky/gocode', {'windows': ['-ldflags', '-H=windowsgui']}],
      \ 'gocode-gomod':  ['github.com/stamblerre/gocode'],
      \ 'godef':         ['github.com/rogpeppe/godef'],
      \ 'gogetdoc':      ['github.com/zmb3/gogetdoc'],
      \ 'goimports':     ['golang.org/x/tools/cmd/goimports'],
      \ 'golint':        ['golang.org/x/lint/golint'],
      \ 'gopls':         ['golang.org/x/tools/cmd/gopls'],
      \ 'gometalinter':  ['github.com/alecthomas/gometalinter'],
      \ 'golangci-lint': ['github.com/golangci/golangci-lint/cmd/golangci-lint'],
      \ 'gomodifytags':  ['github.com/fatih/gomodifytags'],
      \ 'gorename':      ['golang.org/x/tools/cmd/gorename'],
      \ 'gotags':        ['github.com/jstemmer/gotags'],
      \ 'guru':          ['golang.org/x/tools/cmd/guru'],
      \ 'impl':          ['github.com/josharian/impl'],
      \ 'keyify':        ['honnef.co/go/tools/cmd/keyify'],
      \ 'motion':        ['github.com/fatih/motion'],
      \ 'iferr':         ['github.com/koron/iferr'],
\ }

如注释所言，:GoInstallBinaries实际上是把这些二进制文件安装到本地

安装到的目录为 go env 命令中的 $GOPATH/bin 中

• GOROOT：GOROOT就是Go的安装目录，（类似于java的JDK）
• GOPATH：GOPATH是我们的工作空间,保存go项目代码和第三方依赖包

安装之后，会在 $GOPATH/bin 目录下看到如下文件

-rwxrwxr-x 1 work work  2790020 7月  13 16:46 asmfmt
-rwxrwxr-x 1 work work 20479363 7月  13 16:42 dlv
-rwxrwxr-x 1 work work  6743211 7月  13 16:41 errcheck
-rwxrwxr-x 1 work work  6573622 7月  13 16:40 fillstruct
-rwxrwxr-x 1 work work  7961924 7月  13 16:40 godef
-rwxrwxr-x 1 work work 57474288 7月  13 16:44 golangci-lint
-rwxrwxr-x 1 work work  3631869 7月  13 16:45 gomodifytags
-rwxrwxr-x 1 work work 39363164 7月  13 16:39 gopls
-rwxrwxr-x 1 work work  3033492 7月  13 16:43 gotags
-rwxrwxr-x 1 work work  2653183 7月  13 16:43 iferr
-rwxrwxr-x 1 work work  6429856 7月  13 16:44 impl
-rwxrwxr-x 1 work work  3402016 7月  13 16:41 motion
-rwxrwxr-x 1 work work 12725758 7月  13 16:38 revive
-rwxrwxr-x 1 work work 14508202 7月  13 16:45 staticcheck