Currently my Vim highlights matching parentheses, brackets, quotes, etc. with Cyan background and white foreground -- the cursor can be moved between these with
%. Thanks to my matchit.vim, I can also switch with
% between if/end, for/end, etc. -- however these are not highlighted on selection.
How can I automatically highlight these matching pairs upon selection, like is automatically done with parentheses?
Furthermore, how can I modify the background color used for these pairs using
Thanks in advance.
I've updated the answer by @Tommy A below to account for poorly specified
matchit.vim groups, and other situations where the
% operator does not return the cursor to the original position, ever. Check out the differences in the "while" loop. Anyone reading this thread is advised to use this version, to avoid infinite loops:
function! s:get_match_lines(line) abort " Loop until `%` returns the original line number; abort if " (1) the % operator keeps us on the same line, or " (2) the % operator doesn't return us to the same line after some nubmer of jumps let a:tolerance=25 let a:badbreak=1 let a:linebefore=-1 let lines =  while a:tolerance && a:linebefore != line('.') let a:linebefore=line('.') let a:tolerance-=1 normal % if line('.') == a:line " Note that the current line number is never added to the `lines` " list. a:line is the input argument 'line'; a is the FUNCTION BUFFER let a:badbreak=0 break endif call add(lines, line('.')) endwhile "Return to original line no matter what, return list of lines to highlight execute "normal ".a:line."gg" if a:badbreak==1 return  else return lines endif endfunction function! s:hl_matching_lines() abort " `b:hl_last_line` prevents running the script again while the cursor is " moved on the same line. Otherwise, the cursor won't move if the current " line has matching pairs of something. if exists('b:hl_last_line') && b:hl_last_line == line('.') return endif let b:hl_last_line = line('.') " Save the window's state. let view = winsaveview() " Delete a previous match highlight. `12345` is used for the match ID. " It can be anything as long as it's unique. silent! call matchdelete(12345) " Try to get matching lines from the current cursor position. let lines = s:get_match_lines(view.lnum) if empty(lines) " It's possible that the line has another matching line, but can't be " matched at the current column. Move the cursor to column 1 to try " one more time. call cursor(view.lnum, 1) let lines = s:get_match_lines(view.lnum) endif if len(lines) " Since the current line is not in the `lines` list, only the other " lines are highlighted. If you want to highlight the current line as " well: " call add(lines, view.lnum) if exists('*matchaddpos') " If matchaddpos() is availble, use it to highlight the lines since it's " faster than using a pattern in matchadd(). call matchaddpos('MatchLine', lines, 0, 12345) else " Highlight the matching lines using the \%l atom. The `MatchLine` " highlight group is used. call matchadd('MatchLine', join(map(lines, '''\%''.v:val.''l'''), '\|'), 0, 12345) endif endif " Restore the window's state. call winrestview(view) endfunction function! s:hl_matching_lines_clear() abort silent! call matchdelete(12345) unlet! b:hl_last_line endfunction " The highlight group that's used for highlighting matched lines. By " default, it will be the same as the `MatchParen` group. highlight default link MatchLine MatchParen augroup matching_lines autocmd! " Highlight lines as the cursor moves. autocmd CursorMoved * call s:hl_matching_lines() " Remove the highlight while in insert mode. autocmd InsertEnter * call s:hl_matching_lines_clear() " Remove the highlight after TextChanged. autocmd TextChanged,TextChangedI * call s:hl_matching_lines_clear() augroup END