nvim: Tweak CoC completion keybindings

tree/.config/nvim/init.vim.tpl

@@ -181,7 +181,7 @@ noremap <leader>h :noh<Enter>
 noremap <c-r> :Rooter<Enter>
 let g:rooter_manual_only = 1
 
-" Toggle between buffers
+" Toggle between begin
 nnoremap <leader><leader> <c-^>
 
 " Managing tabs
@@ -200,6 +200,11 @@ nmap <leader>d :<C-u>CocList diagnostics<Enter>
 nmap <leader>c :<C-u>CocList commands<Enter>
 nmap <leader>s :<C-u>CocList -I symbols<Enter>
 nmap <leader>o :<C-u>CocOutline<Enter>
+imap <expr><Enter> coc#pum#visible() ? coc#pum#confirm() : "\<Enter>"
+imap <silent><expr> <TAB>
+      \ coc#pum#visible() ? coc#pum#next(1) :
+      \ coc#refresh()
+imap <expr><S-TAB> coc#pum#visible() ? coc#pum#prev(1) : "\<C-h>"
 
 " grammarous
 nmap <leader>gc :GrammarousCheck<Enter>