[nvim] add a mapping for showing the signature help

nvim/plugin/completion.vim

@@ -36,6 +36,8 @@ endif
     let g:coc_snippet_prev = '<S-Tab>'
 
     inoremap <silent><expr> <C-Space> coc#refresh()
+    inoremap <silent> <A-s> <Cmd>call CocActionAsync('showSignatureHelp')<CR>
+    inoremap <F1> <A-s>
 
     nmap <silent> [c <Plug>(coc-diagnostic-prev)
     nmap <silent> ]c <Plug>(coc-diagnostic-next)
@@ -44,9 +46,9 @@ endif
     nmap <silent> <space>gt <Plug>(coc-type-definition)
     nmap <silent> <space>gi <Plug>(coc-implementation)
     nmap <silent> <space>gr <Plug>(coc-references)
-    nmap <silent> <F2>       <Plug>(coc-rename)
-    nmap <silent> <A-CR>     <Plug>(coc-codeaction)
-    vmap <silent> <A-CR>     <Plug>(coc-codeaction-selected)
+    nmap <silent> <F2>      <Plug>(coc-rename)
+    nmap <silent> <A-CR>    <Plug>(coc-codeaction-line)
+    vmap <silent> <A-CR>    <Plug>(coc-codeaction-selected)
     " nmap <silent> <leader>qf  <Plug>(coc-fix-current)
 
     nnoremap <silent> <space>l <Cmd>CocList<CR>

nvim/plugin/editing.vim

@@ -138,8 +138,8 @@ set commentstring=//%s
   augroup vimrc-editing-visual-star-search
     autocmd!
     autocmd VimEnter *
-      \ xmap * :<C-u>call <SID>VisualStarSearch('/')<CR>n
-      \|xmap # :<C-u>call <SID>VisualStarSearch('?')<CR>N
+      \ xmap * :<Cmd>call <SID>VisualStarSearch('/')<CR>n
+      \|xmap # :<Cmd>call <SID>VisualStarSearch('?')<CR>N
   augroup END
 
 " }}}

nvim/plugin/files.vim

@@ -29,7 +29,7 @@ nnoremap <silent><expr> <CR> empty(&buftype) ? ":write<bar>wall\<CR>" : "\<CR>"
   let g:loaded_netrwPlugin = 1
   " re-add Netrw's gx mappings since we've disabled them
   nnoremap <silent> gx <Cmd>call netrw#BrowseX(expand('<cfile>'),netrw#CheckIfRemote())<CR>
-  xnoremap <silent> gx :<C-u>call netrw#BrowseXVis()<CR>
+  xnoremap <silent> gx :<Cmd>call netrw#BrowseXVis()<CR>
 " }}}