228 lines
7.4 KiB
Markdown
228 lines
7.4 KiB
Markdown
# vim-go
|
|
|
|
Go (golang) support for Vim. It comes with pre-defined sensible settings (like
|
|
auto gofmt on save), has autocomplete, snippet support, improved syntax
|
|
highlighting, go toolchain commands, etc... If needed vim-go installs all
|
|
necessary binaries for providing seamless Vim integration with current
|
|
commands. It's highly customizable and each individual feature can be
|
|
disabled/enabled easily.
|
|
|
|
|
|
|
|
## Features
|
|
|
|
* Improved Syntax highlighting, such as Functions, Operators, Methods..
|
|
* Auto completion support via `gocode`
|
|
* Better `gofmt` on save, keeps cursor position and doesn't break your undo
|
|
history
|
|
* Go to symbol/declaration with `godef`
|
|
* Look up documentation with `godoc` inside Vim or open it in browser.
|
|
* Automatically import packages via `goimports`
|
|
* Compile and `go build` your package, install it with `go install`
|
|
* `go run` quickly your current file/files
|
|
* Run `go test` and see any errors in quickfix window
|
|
* Create a coverage profile and display annotated source code in browser to see
|
|
which functions are covered.
|
|
* Lint your code with `golint`
|
|
* Run your code through `go vet` to catch static errors.
|
|
* Advanced source analysis tool with `oracle`
|
|
* Precise type-safe renaming of identifiers with `gorename`
|
|
* List all source files and dependencies
|
|
* Checking with `errcheck` for unchecked errors.
|
|
* Integrated and improved snippets. Supports `ultisnips` or `neosnippet`
|
|
* Share your current code to [play.golang.org](http://play.golang.org)
|
|
* On-the-fly type information about the word under the cursor
|
|
* Tagbar support to show tags of the source code in a sidebar with `gotags`
|
|
* Custom vim text objects, such a `a function` or `inner function`
|
|
|
|
## Install
|
|
|
|
First of all, do not use it with other Go plugins. If you use pathogen, just
|
|
clone it into your bundle directory:
|
|
|
|
```bash
|
|
$ cd ~/.vim/bundle
|
|
$ git clone https://github.com/fatih/vim-go.git
|
|
```
|
|
|
|
For Vundle add this line to your vimrc:
|
|
|
|
```vimrc
|
|
Plugin 'fatih/vim-go'
|
|
```
|
|
and execute `:PluginInstall` (or `:BundleInstall` for older versions of Vundle)
|
|
|
|
Please be sure all necessary binaries are installed (such as `gocode`, `godef`,
|
|
`goimports`, etc..). You can easily install them with the included
|
|
`:GoInstallBinaries` command. Those binaries will be automatically downloaded
|
|
and installed to your `$GOBIN` environment (if not set it will use
|
|
`$GOPATH/bin`). It requires `git` and `hg` for fetching the individual Go
|
|
packages.
|
|
|
|
### Optional
|
|
|
|
* Autocompletion is enabled by default via `<C-x><C-o>`, to get real-time
|
|
completion (completion by type) install:
|
|
[YCM](https://github.com/Valloric/YouCompleteMe) or
|
|
[neocomplete](https://github.com/Shougo/neocomplete.vim).
|
|
* To get displayed source code tag informations on a sidebar install
|
|
[tagbar](https://github.com/majutsushi/tagbar).
|
|
* For snippet feature install:
|
|
[ultisnips](https://github.com/SirVer/ultisnips) or
|
|
[neosnippet](https://github.com/Shougo/neosnippet.vim).
|
|
* Screenshot color scheme is a slightly modified molokai: [fatih/molokai](https://github.com/fatih/molokai).
|
|
|
|
## Usage
|
|
|
|
Many of the [features](#features) are enabled by default. There are no
|
|
additional settings needed. All usages and commands are listed in
|
|
`doc/vim-go.txt`. Just open the help page to see all commands:
|
|
|
|
:help vim-go
|
|
|
|
## Mappings
|
|
|
|
vim-go has several `<Plug>` mappings which can be used to create custom
|
|
mappings. Below are some examples you might find useful:
|
|
|
|
Show a list of interfaces which is implemented by the type under your cursor
|
|
with `<leader>s`
|
|
|
|
```vim
|
|
au FileType go nmap <Leader>s <Plug>(go-implements)
|
|
```
|
|
|
|
Show type info for the word under your cursor with `<leader>i` (useful if you
|
|
have disabled auto showing type info via `g:go_auto_type_info`)
|
|
|
|
```vim
|
|
au FileType go nmap <Leader>i <Plug>(go-info)
|
|
```
|
|
|
|
Open the relevant Godoc for the word under the cursor with `<leader>gd` or open
|
|
it vertically with `<leader>gv`
|
|
|
|
```vim
|
|
au FileType go nmap <Leader>gd <Plug>(go-doc)
|
|
au FileType go nmap <Leader>gv <Plug>(go-doc-vertical)
|
|
```
|
|
|
|
Or open the Godoc in browser
|
|
|
|
```vim
|
|
au FileType go nmap <Leader>gb <Plug>(go-doc-browser)
|
|
```
|
|
|
|
Run commands, such as `go run` with `<leader>r` for the current file or `go
|
|
build` and `go test` for the current package with `<leader>b` and `<leader>t`.
|
|
Display a beautiful annotated source code to see which functions are covered
|
|
with `<leader>c`.
|
|
|
|
```vim
|
|
au FileType go nmap <leader>r <Plug>(go-run)
|
|
au FileType go nmap <leader>b <Plug>(go-build)
|
|
au FileType go nmap <leader>t <Plug>(go-test)
|
|
au FileType go nmap <leader>c <Plug>(go-coverage)
|
|
```
|
|
|
|
By default the mapping `gd` is enabled which opens the target identifier in
|
|
current buffer. You can also open the definition/declaration in a new vertical,
|
|
horizontal or tab for the word under your cursor:
|
|
|
|
```vim
|
|
au FileType go nmap <Leader>ds <Plug>(go-def-split)
|
|
au FileType go nmap <Leader>dv <Plug>(go-def-vertical)
|
|
au FileType go nmap <Leader>dt <Plug>(go-def-tab)
|
|
```
|
|
|
|
Rename the identifier under the cursor to a new name
|
|
|
|
```vim
|
|
au FileType go nmap <Leader>e <Plug>(go-rename)
|
|
```
|
|
|
|
More `<Plug>` mappings can be seen with `:he go-mappings`. Also these are just
|
|
recommendations, you are free to create more advanced mappings or functions
|
|
based on `:he go-commands`.
|
|
|
|
## Settings
|
|
Below are some settings you might find useful. For the full list see `:he go-settings`.
|
|
|
|
Disable opening browser after posting to your snippet to `play.golang.org`:
|
|
|
|
```vim
|
|
let g:go_play_open_browser = 0
|
|
```
|
|
|
|
By default vim-go shows errors for the fmt command, to disable it:
|
|
|
|
```vim
|
|
let g:go_fmt_fail_silently = 1
|
|
```
|
|
|
|
Enable goimports to automatically insert import paths instead of gofmt:
|
|
|
|
```vim
|
|
let g:go_fmt_command = "goimports"
|
|
```
|
|
|
|
Disable auto fmt on save:
|
|
|
|
```vim
|
|
let g:go_fmt_autosave = 0
|
|
```
|
|
|
|
By default binaries are installed to `$GOBIN` or `$GOPATH/bin`. To change it:
|
|
|
|
```vim
|
|
let g:go_bin_path = expand("~/.gotools")
|
|
let g:go_bin_path = "/home/fatih/.mypath" "or give absolute path
|
|
```
|
|
|
|
By default syntax-highlighting for Functions, Methods and Structs is disabled.
|
|
To change it:
|
|
```vim
|
|
let g:go_highlight_functions = 1
|
|
let g:go_highlight_methods = 1
|
|
let g:go_highlight_structs = 1
|
|
```
|
|
|
|
## Troubleshooting
|
|
|
|
### I'm using Fish shell but have some problems using Vim-go
|
|
|
|
First environment variables in Fish are applied differently, it should be like:
|
|
|
|
set -x GOPATH /your/own/gopath
|
|
|
|
Second, Vim needs a POSIX compatible shell (more info here:
|
|
https://github.com/dag/vim-fish#teach-a-vim-to-fish). If you use Fish to open
|
|
vim, it will make certain shell based commands fail (means vim-go will fail
|
|
too). To overcome this problem change the default shell by adding the following
|
|
into your .vimrc (on the top of the file):
|
|
|
|
if $SHELL =~ 'fish'
|
|
set shell='/bin/bash'
|
|
endif
|
|
|
|
or
|
|
|
|
set shell='/bin/bash'
|
|
|
|
|
|
## Why another plugin?
|
|
|
|
This plugin/package is born mainly from frustration. I had to re-install my Vim
|
|
plugins and especially for Go I had to install a lot of separate different
|
|
plugins, setup the necessary binaries to make them work together and hope not
|
|
to lose them again. Lots of plugins out there lack proper settings.
|
|
This plugin is improved and contains all my fixes/changes that I'm using for
|
|
months under heavy go development environment.
|
|
|
|
Give it a try. I hope you like it. Feel free to contribute to the project.
|
|
|
|
## Credits
|
|
|
|
* Go Authors for official vim plugins
|
|
* Gocode, Godef, Golint, Oracle, Goimports, Gotags, Errcheck projects and authors of those projects.
|
|
* Other vim-plugins, thanks for inspiration (vim-golang, go.vim, vim-gocode, vim-godef)
|