Do not send requests/notifications for buffers without a configured server command (autozimu#1121)

Author: martskins

autoload/LanguageClient.vim

@@ -786,12 +786,15 @@ function! s:SkipSendingMessage() abort
  return v:false
  endif
 
- return &buftype !=# '' || &filetype ==# '' || expand('%') ==# ''
+ let l:commands = get(g:, 'LanguageClient_serverCommands', {})
+ let l:has_command = has_key(l:commands, &filetype)
+
+ return !l:has_command || &buftype !=# '' || &filetype ==# '' || expand('%') ==# ''
 endfunction
 
 function! LanguageClient#Call(method, params, callback, ...) abort
  if s:SkipSendingMessage()
- " call s:Debug('Skip sending message')
+ echo '[LC] Server not configured for filetype ' . &filetype
  return
  endif
 

plugin/LanguageClient.vim

@@ -153,25 +153,31 @@ endfunction
 command! -nargs=* LanguageClientStart :call LanguageClient#startServer(<f-args>)
 command! LanguageClientStop call LanguageClient#shutdown()
 
-augroup languageClient
+function! s:ConfigureAutocmds()
+ let l:commands = get(g:, 'LanguageClient_serverCommands', {})
+ if !has_key(l:commands, &filetype)
+ " skip setting autocmds if the filetype doesn't have a configured server command
+ return
+ endif
+
+ call LanguageClient#handleFileType()
+ augroup languageClient
  autocmd!
- autocmd FileType * call LanguageClient#handleFileType()
- autocmd BufNewFile * call LanguageClient#handleBufNewFile()
- autocmd BufEnter * call LanguageClient#handleBufEnter()
- autocmd BufWritePost * call LanguageClient#handleBufWritePost()
- autocmd BufDelete * call LanguageClient#handleBufDelete()
- autocmd TextChanged * call LanguageClient#handleTextChanged()
- autocmd TextChangedI * call LanguageClient#handleTextChanged()
+ autocmd BufNewFile <buffer> call LanguageClient#handleBufNewFile()
+ autocmd BufEnter <buffer> call LanguageClient#handleBufEnter()
+ autocmd BufWritePost <buffer> call LanguageClient#handleBufWritePost()
+ autocmd BufDelete <buffer> call LanguageClient#handleBufDelete()
+ autocmd TextChanged <buffer> call LanguageClient#handleTextChanged()
+ autocmd TextChangedI <buffer> call LanguageClient#handleTextChanged()
  if exists('##TextChangedP')
- autocmd TextChangedP * call LanguageClient#handleTextChanged()
+ autocmd TextChangedP <buffer> call LanguageClient#handleTextChanged()
  endif
- autocmd CursorMoved * call LanguageClient#handleCursorMoved()
- autocmd VimLeavePre * call LanguageClient#handleVimLeavePre()
-
- autocmd CompleteDone * call LanguageClient#handleCompleteDone()
+ autocmd CursorMoved <buffer> call LanguageClient#handleCursorMoved()
+ autocmd VimLeavePre <buffer> call LanguageClient#handleVimLeavePre()
 
+ autocmd CompleteDone <buffer> call LanguageClient#handleCompleteDone()
  if get(g:, 'LanguageClient_signatureHelpOnCompleteDone', 0)
- autocmd CompleteDone *
+ autocmd CompleteDone <buffer>
  \ call LanguageClient#textDocument_signatureHelp({}, 's:HandleOutputNothing')
  endif
 
@@ -192,4 +198,10 @@ augroup languageClient
  nnoremap <Plug>(lcn-format-sync) :call LanguageClient_textDocument_formatting_sync()<CR>
  nnoremap <Plug>(lcn-diagnostics-next) :call LanguageClient_diagnosticsNext()<CR>
  nnoremap <Plug>(lcn-diagnostics-prev) :call LanguageClient_diagnosticsPrevious()<CR>
+ augroup END
+endfunction
+
+augroup languageClient_fileType
+ autocmd!
+ autocmd FileType * call s:ConfigureAutocmds()
 augroup END