add more settings to coc

init.vim

@@ -67,8 +67,6 @@ if has('nvim-0.4.0') || has('patch-8.2.0750')
   vnoremap <silent><nowait><expr> <C-b> coc#float#has_scroll() ? coc#float#scroll(0) : "\<C-b>"
 endif
 
-" Run the Code Lens action on the current line.
-nmap <leader>cl  <Plug>(coc-codelens-action)
 
 " Find files using Telescope command-line sugar.
 nnoremap <leader>ff <cmd>Telescope find_files<cr>
@@ -76,6 +74,34 @@ nnoremap <leader>fg <cmd>Telescope live_grep<cr>
 nnoremap <leader>fb <cmd>Telescope buffers<cr>
 nnoremap <leader>fh <cmd>Telescope help_tags<cr>
 
+" config for coc#pum#visible
+
+" Some servers have issues with backup files, see #649.
+set nobackup
+set nowritebackup
+
+" Having longer updatetime (default is 4000 ms = 4 s) leads to noticeable
+" delays and poor user experience.
+set updatetime=300
+
+" Always show the signcolumn, otherwise it would shift the text each time
+" diagnostics appear/become resolved.
+set signcolumn=yes
+
+
+" Symbol renaming.
+nmap <leader>rn <Plug>(coc-rename)
+
+" Formatting selected code.
+xmap <leader>f  <Plug>(coc-format-selected)
+nmap <leader>f  <Plug>(coc-format-selected)
+
+" GoTo code navigation.
+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 tab for trigger completion with characters ahead and navigate.
 " NOTE: There's always complete item selected by default, you may want to enable
 " no select by `"suggest.noselect": true` in your configuration file.