Use Vim colorcolumn instead of a match group for long lines

highlight ExtraWhitespace ctermbg=darkgreen guibg=lightgreen

au BufEnter * match ExtraWhitespace /\v([^\t]+)@>\t+|(\s{2,}|(\w.*)@<!\s)$/

" High-light text longer than 80 characters

highlight LongLine ctermbg=red guibg=pink

au BufEnter * match LongLine /\v%81v[^\r]/

au BufEnter term://*,man://* match none

if exists('TermOpen')

	au TermOpen * match none

" Set a marker column for *just outside* &textwidth

highlight ColorColumn ctermbg=gray ctermfg=red guibg=gray guifg=red

if exists('+colorcolumn')

	set colorcolumn=+1

endif

" Toggle search high-lighting with '<Leader>h' or 'th' (deprecated)