Improved language server client config

bundles-init/vim-lsp.cfg.vim

@@ -1,3 +1,25 @@
+let g:lsp_highlight_references_enabled = 1
+highlight lspReference ctermfg=black guifg=black ctermbg=yellow guibg=yellow
+
+let g:lsp_signs_enabled = 1
+let g:lsp_diagnostics_echo_cursor = 1
+let g:lsp_signs_error = {'text': '✗'}
+let g:lsp_signs_warning = {'text': '‼'}
+
+noremap <Leader>df :LspDocumentFormat<cr>
+vnoremap <Leader>df :LspDocumentRangeFormat<cr>
+noremap <Leader>dr :LspReferences<cr>
+noremap <F3> :LspDefinition<cr>
+noremap <Leader>dR :LspRename<cr>
+noremap <Leader>dh :LspHover<cr>
+noremap <Leader>ds :LspWorkspaceSymbol<cr>
+
+"-----------------------------
+" CONFIGURE VARIOUS SERVERS
+"-----------------------------
+
+" Rust
+if executable('rustup')
 	au User lsp_setup call lsp#register_server({
 		\ 'name': 'rust' ,
 		\ 'cmd' : {server_info->[
@@ -7,11 +29,13 @@ au User lsp_setup call lsp#register_server({
 		\ } ,
 		\ 'whitelist' : [ 'rust' ] ,
 	\ })
+endif
 
-noremap <Leader>df :LspDocumentFormat<cr>
-vnoremap <Leader>df :LspDocumentRangeFormat<cr>
-noremap <Leader>dr :LspReferences<cr>
-noremap <F3> :LspDefinition<cr>
-noremap <Leader>dR :LspRename<cr>
-noremap <Leader>dh :LspHover<cr>
-noremap <Leader>ds :LspWorkspaceSymbol<cr>
+" Python (requires pip install python-language-server)
+if executable('pyls')
+    au User lsp_setup call lsp#register_server({
+        \ 'name': 'pyls',
+        \ 'cmd': {server_info->['pyls']},
+        \ 'whitelist': ['python'],
+        \ })
+endif

bundles-init/vim-lsp.load.vim

@@ -1,2 +1,4 @@
+NeoBundle 'prabirshrestha/asyncomplete.vim'
 NeoBundle 'prabirshrestha/async.vim'
 NeoBundle 'prabirshrestha/vim-lsp'
+NeoBundle 'prabirshrestha/asyncomplete-lsp.vim'