Use ColorColumn for Vim line length hints

vim/.vimrc

@@ -10,12 +10,13 @@ let &listchars = s:is_nerd_font ? "tab:  ,precedes:\uf63c,extends:\uf63d" :
     \ "tab:  ,precedes:\u00ab,extends:\u00bb"
 set list
 let &fillchars = "vert:\u2502,fold: ,diff:\u00b7"
+let &colorcolumn = join(range(80, 99), ',')
 if s:is_color
+    autocmd ColorScheme * highlight ColorColumn ctermbg=black
     autocmd ColorScheme * highlight error cterm=none ctermbg=darkred
         \ ctermfg=black
     autocmd ColorScheme * highlight InvalidWhitespace ctermbg=black
     autocmd ColorScheme * highlight LineNr ctermfg=darkgray
-    autocmd ColorScheme * highlight Overlength ctermbg=black
     autocmd ColorScheme * highlight Pmenu ctermbg=darkblue ctermfg=black
     autocmd ColorScheme * highlight PmenuSel ctermbg=lightgray ctermfg=black
     autocmd ColorScheme * highlight Search ctermbg=darkblue ctermfg=black
@@ -46,7 +47,6 @@ endif
 function s:DefaultMatches()
     call clearmatches()
     if s:is_color && !&previewwindow && index(['netrw', 'qf'], &filetype) < 0
-        call matchadd('Overlength', '\%80v.\+', -1)
         if &expandtab
             call matchadd('InvalidWhitespace', '\t')
         else
@@ -56,7 +56,7 @@ function s:DefaultMatches()
     endif
 endfunction
 
-autocmd BufWinEnter,FileType,TabEnter,WinEnter * call s:DefaultMatches()
+autocmd ColorScheme,BufWinEnter,FileType,TabEnter,WinEnter * call s:DefaultMatches()
 autocmd BufWinLeave,TabLeave * call clearmatches()
 
 function s:TabIndent(...)
@@ -139,6 +139,7 @@ let airline#extensions#tabline#show_close_button = 0
 let airline#extensions#wordcount#enabled = 0
 let netrw_banner = 0
 let ycm_autoclose_preview_window_after_insertion = 1
+let ycm_auto_hover = ''
 
 set timeoutlen=2000
 autocmd InsertEnter * set timeoutlen=500