.vimrc と CocConfig

.vimrc

set vb t_vb=
set number
set nobackup
set noundofile

set tabstop=4
set expandtab
set autoindent
set smarttab
set shiftwidth=4
set smartindent
set backspace=indent,eol,start
set wrapscan
set showmatch

set encoding=utf-8

set fileencodings=utf-8,cp932,sjis,euc-jp
set fileencoding=utf-8

set fileformats=unix,dos
set fileformat=unix


""""""""""""""""""""""""""""""""""""""""
" plug.vim
call plug#begin('~/.vim/plugged')

Plug 'elmcast/elm-vim', { 'for': 'elm' }
let g:elm_format_autosave = 0
let g:elm_setup_keybindings = 0

Plug 'antew/vim-elm-language-server'
Plug 'neoclide/coc.nvim', {'do': { -> coc#util#install()}}

call plug#end()


""""""""""""""""""""""""""""""""""""""""
" coc.nvim
"   refs - https://drumato.hatenablog.com/entry/2019/04/01/121139
set updatetime=300

" use <tab> for trigger completion and navigate to next complete item
function! s:check_back_space() abort
  let col = col('.') - 1
  return !col || getline('.')[col - 1]  =~ '\s'
endfunction
inoremap <silent><expr> <TAB>
      \ pumvisible() ? "\<C-n>" :
      \ <SID>check_back_space() ? "\<TAB>" :
      \ coc#refresh()

" use <c-space>for trigger completion
inoremap <silent><expr> <c-space> coc#refresh()

" 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)

" 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

autocmd FileType json syntax match Comment +\/\/.\+$+

" 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` for format current buffer
command! -nargs=0 Format :call CocAction('format')
autocmd BufWritePre *.elm Format

" Use `:Fold` for fold current buffer
command! -nargs=? Fold :call CocAction('fold', <f-args>)


""""""""""""""""""""""""""""""""""""""""
" ウィンドウ位置とサイズの保存
let g:save_window_file = expand('~/.vimwinpos')
augroup SaveWindow
  autocmd!
  autocmd VimLeavePre * call s:save_window()
  function! s:save_window()
    let options = [
      \ 'set columns=' . &columns,
      \ 'set lines=' . &lines,
      \ 'winpos ' . getwinposx() . ' ' . getwinposy(),
      \ ]
    call writefile(options, g:save_window_file)
  endfunction
augroup END

if filereadable(g:save_window_file)
  execute 'source' g:save_window_file
endif

CocConfig

{
  "languageserver": {
    "elmLS": {
      "command": "elm-language-server.cmd",
      "args": ["--stdio"],
      "filetypes": ["elm"],
      "rootPatterns": ["elm.json"],
      "initializationOptions": {
        "runtime": "node",
        "elmPath": "elm",
        "elmFormatPath": "elm-format",
        "elmTestPath": "elm-test"
      }
    }
  }
}