vim config for golang and python in 2020 with coc.nvim
在我看来，一个靠谱的开发工具应该具有以下几点功能：
- 基本的语法高亮；
- 基本的自动补全；
- 方便查找、替换、修改；
基础插件、设置
" Tools
Plug 'junegunn/fzf', { 'dir': '~/.fzf', 'do': './install --all' }
Plug 'junegunn/fzf.vim'
Plug 'airblade/vim-gitgutter'
Plug 'majutsushi/tagbar'
Plug 'scrooloose/nerdtree'
Plug 'Xuyuanp/nerdtree-git-plugin'
" Theme
Plug 'gruvbox-community/gruvbox'
Plug 'vim-airline/vim-airline'
Plug 'vim-airline/vim-airline-themes'其中，fzf用作模糊搜索，vim-gitgutter标记修改，nerdtree和tagbar是老牌的辅助开发工具了。
vim for golang
主要使用插件是vim-go和coc.nvim。
Plug 'fatih/vim-go', { 'do': ':GoUpdateBinaries' }
Plug 'neoclide/coc.nvim', {'branch': 'release'}配套设置：
" ------------------- vim-go.vim configuration --------------------
" use golang language server
let g:go_def_mode='gopls'
let g:go_info_mode='gopls'
" Highlight more info
let g:go_highlight_build_constraints = 1
let g:go_highlight_extra_types = 1
let g:go_highlight_fields = 1
let g:go_highlight_functions = 1
let g:go_highlight_methods = 1
let g:go_highlight_operators = 1
let g:go_highlight_structs = 1
let g:go_highlight_types = 1
" highlight same variable in view
let g:go_auto_sameids = 1
" show type info in statusbar
let g:go_auto_type_info = 1
" disable gd mapping of vim-go
let g:go_def_mapping_enabled = 0
" -------------------- vim-go.vim configuration finished --------------------
" ------------------- coc.nvim configuration --------------------
" if hidden is not set, TextEdit might fail.
set hidden
" Some servers have issues with backup files, see #649
set nobackup
set nowritebackup
" Better display for messages
set cmdheight=2
" Smaller updatetime for CursorHold & CursorHoldI
set updatetime=300
" don't give |ins-completion-menu| messages.
set shortmess+=c
" always show signcolumns
set signcolumn=yes
" Use tab for trigger completion with characters ahead and navigate.
" Use command ':verbose imap <tab>' to make sure tab is not mapped by other plugin.
" inoremap <silent><expr> <TAB>
" \ pumvisible() ? "\<C-n>" :
" \ <SID>check_back_space() ? "\<TAB>" :
" \ coc#refresh()
" inoremap <expr><S-TAB> pumvisible() ? "\<C-p>" : "\<C-h>"
"
" function! s:check_back_space() abort
" let col = col('.') - 1
" return !col || getline('.')[col - 1] =~# '\s'
" endfunction
" Use <c-space> to trigger completion.
inoremap <silent><expr> <c-space> coc#refresh()
" Use <cr> to confirm completion, `<C-g>u` means break undo chain at current position.
" Coc only does snippet and additional edit on confirm.
inoremap <expr> <cr> pumvisible() ? "\<C-y>" : "\<C-g>u\<CR>"
" Use `[c` and `]c` to navigate diagnostics
nmap <silent> [c <Plug>(coc-diagnostic-prev)
nmap <silent> ]c <Plug>(coc-diagnostic-next)
" Remap keys for gotos
nmap <silent> gd <Plug>(coc-definition)
nmap <silent> gy <Plug>(coc-type-definition)
nmap <silent> gi <Plug>(coc-implementation)
nmap <silent> gr <Plug>(coc-references)
" Use K to show documentation in preview window
nnoremap <silent> K :call <SID>show_documentation()<CR>
function! s:show_documentation()
if (index(['vim','help'], &filetype) >= 0)
execute 'h '.expand('<cword>')
else
call CocAction('doHover')
endif
endfunction
" Highlight symbol under cursor on CursorHold
autocmd CursorHold * silent call CocActionAsync('highlight')
" Remap for rename current word
nmap <leader>rn <Plug>(coc-rename)
" Remap for format selected region
vmap <leader>f <Plug>(coc-format-selected)
nmap <leader>f <Plug>(coc-format-selected)
augroup mygroup
autocmd!
" Setup formatexpr specified filetype(s).
autocmd FileType typescript,json setl formatexpr=CocAction('formatSelected')
" Update signature help on jump placeholder
autocmd User CocJumpPlaceholder call CocActionAsync('showSignatureHelp')
augroup end
" Remap for do codeAction of selected region, ex: `<leader>aap` for current paragraph
vmap <leader>a <Plug>(coc-codeaction-selected)
nmap <leader>a <Plug>(coc-codeaction-selected)
" Remap for do codeAction of current line
nmap <leader>ac <Plug>(coc-codeaction)
" Fix autofix problem of current line
nmap <leader>qf <Plug>(coc-fix-current)
" Use `:Format` to format current buffer
command! -nargs=0 Format :call CocAction('format')
" Use `:Fold` to fold current buffer
command! -nargs=? Fold :call CocAction('fold', <f-args>)
" Use `:Prettier` to format current buffer
command! -nargs=0 Prettier :CocCommand prettier.formatFile
" Add diagnostic info for https://github.com/itchyny/lightline.vim
let g:lightline = {
\ 'colorscheme': 'wombat',
\ 'active': {
\ 'left': [ [ 'mode', 'paste' ],
\ [ 'cocstatus', 'readonly', 'filename', 'modified' ] ]
\ },
\ 'component_function': {
\ 'cocstatus': 'coc#status'
\ },
\ }
" Using CocList
" Show all diagnostics
nnoremap <silent> <space>a :<C-u>CocList diagnostics<cr>
" Manage extensions
nnoremap <silent> <space>e :<C-u>CocList extensions<cr>
" Show commands
nnoremap <silent> <space>c :<C-u>CocList commands<cr>
" Find symbol of current document
nnoremap <silent> <space>o :<C-u>CocList outline<cr>
" Search workspace symbols
nnoremap <silent> <space>s :<C-u>CocList -I symbols<cr>
" Do default action for next item.
nnoremap <silent> <space>j :<C-u>CocNext<CR>
" Do default action for previous item.
nnoremap <silent> <space>k :<C-u>CocPrev<CR>
" Resume latest coc list
nnoremap <silent> <space>p :<C-u>CocListResume<CR>
" -------------------- coc.nvim configuration finished --------------------vim for python
# install vscode python extension
:CocInstall coc-python
# open coc config
:CocConfig
# disable jedi
"python.jediEnabled": false一些自定义的快捷键
" custom hot-key
nnoremap <C-]> gd
nnoremap <C-p> :FZF<cr>
nnoremap <C-l> :TagbarToggle<cr>
nnoremap <leader>ob :Buffers<cr>最终效果图：
