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Diffstat (limited to 'ftplugin')
| -rw-r--r-- | ftplugin/markdown.vim | 795 |
1 files changed, 795 insertions, 0 deletions
diff --git a/ftplugin/markdown.vim b/ftplugin/markdown.vim new file mode 100644 index 00000000..43c9773a --- /dev/null +++ b/ftplugin/markdown.vim @@ -0,0 +1,795 @@ +if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'markdown') == -1 + +"TODO print messages when on visual mode. I only see VISUAL, not the messages. + +" Function interface phylosophy: +" +" - functions take arbitrary line numbers as parameters. +" Current cursor line is only a suitable default parameter. +" +" - only functions that bind directly to user actions: +" +" - print error messages. +" All intermediate functions limit themselves return `0` to indicate an error. +" +" - move the cursor. All other functions do not move the cursor. +" +" This is how you should view headers for the header mappings: +" +" |BUFFER +" | +" |Outside any header +" | +" a-+# a +" | +" |Inside a +" | +" a-+ +" b-+## b +" | +" |inside b +" | +" b-+ +" c-+### c +" | +" |Inside c +" | +" c-+ +" d-|# d +" | +" |Inside d +" | +" d-+ +" e-|e +" |==== +" | +" |Inside e +" | +" e-+ + +" For each level, contains the regexp that matches at that level only. +" +let s:levelRegexpDict = { + \ 1: '\v^(#[^#]@=|.+\n\=+$)', + \ 2: '\v^(##[^#]@=|.+\n-+$)', + \ 3: '\v^###[^#]@=', + \ 4: '\v^####[^#]@=', + \ 5: '\v^#####[^#]@=', + \ 6: '\v^######[^#]@=' +\ } + +" Maches any header level of any type. +" +" This could be deduced from `s:levelRegexpDict`, but it is more +" efficient to have a single regexp for this. +" +let s:headersRegexp = '\v^(#|.+\n(\=+|-+)$)' + +" Returns the line number of the first header before `line`, called the +" current header. +" +" If there is no current header, return `0`. +" +" @param a:1 The line to look the header of. Default value: `getpos('.')`. +" +function! s:GetHeaderLineNum(...) + if a:0 == 0 + let l:l = line('.') + else + let l:l = a:1 + endif + while(l:l > 0) + if join(getline(l:l, l:l + 1), "\n") =~ s:headersRegexp + return l:l + endif + let l:l -= 1 + endwhile + return 0 +endfunction + +" - if inside a header goes to it. +" Return its line number. +" +" - if on top level outside any headers, +" print a warning +" Return `0`. +" +function! s:MoveToCurHeader() + let l:lineNum = s:GetHeaderLineNum() + if l:lineNum != 0 + call cursor(l:lineNum, 1) + else + echo 'outside any header' + "normal! gg + endif + return l:lineNum +endfunction + +" Move cursor to next header of any level. +" +" If there are no more headers, print a warning. +" +function! s:MoveToNextHeader() + if search(s:headersRegexp, 'W') == 0 + "normal! G + echo 'no next header' + endif +endfunction + +" Move cursor to previous header (before current) of any level. +" +" If it does not exist, print a warning. +" +function! s:MoveToPreviousHeader() + let l:curHeaderLineNumber = s:GetHeaderLineNum() + let l:noPreviousHeader = 0 + if l:curHeaderLineNumber <= 1 + let l:noPreviousHeader = 1 + else + let l:previousHeaderLineNumber = s:GetHeaderLineNum(l:curHeaderLineNumber - 1) + if l:previousHeaderLineNumber == 0 + let l:noPreviousHeader = 1 + else + call cursor(l:previousHeaderLineNumber, 1) + endif + endif + if l:noPreviousHeader + echo 'no previous header' + endif +endfunction + +" - if line is inside a header, return the header level (h1 -> 1, h2 -> 2, etc.). +" +" - if line is at top level outside any headers, return `0`. +" +function! s:GetHeaderLevel(...) + if a:0 == 0 + let l:line = line('.') + else + let l:line = a:1 + endif + let l:linenum = s:GetHeaderLineNum(l:line) + if l:linenum != 0 + return s:GetLevelOfHeaderAtLine(l:linenum) + else + return 0 + endif +endfunction + +" Returns the level of the header at the given line. +" +" If there is no header at the given line, returns `0`. +" +function! s:GetLevelOfHeaderAtLine(linenum) + let l:lines = join(getline(a:linenum, a:linenum + 1), "\n") + for l:key in keys(s:levelRegexpDict) + if l:lines =~ get(s:levelRegexpDict, l:key) + return l:key + endif + endfor + return 0 +endfunction + +" Move cursor to parent header of the current header. +" +" If it does not exit, print a warning and do nothing. +" +function! s:MoveToParentHeader() + let l:linenum = s:GetParentHeaderLineNumber() + if l:linenum != 0 + call cursor(l:linenum, 1) + else + echo 'no parent header' + endif +endfunction + +" Return the line number of the parent header of line `line`. +" +" If it has no parent, return `0`. +" +function! s:GetParentHeaderLineNumber(...) + if a:0 == 0 + let l:line = line('.') + else + let l:line = a:1 + endif + let l:level = s:GetHeaderLevel(l:line) + if l:level > 1 + let l:linenum = s:GetPreviousHeaderLineNumberAtLevel(l:level - 1, l:line) + return l:linenum + endif + return 0 +endfunction + +" Return the line number of the previous header of given level. +" in relation to line `a:1`. If not given, `a:1 = getline()` +" +" `a:1` line is included, and this may return the current header. +" +" If none return 0. +" +function! s:GetNextHeaderLineNumberAtLevel(level, ...) + if a:0 < 1 + let l:line = line('.') + else + let l:line = a:1 + endif + let l:l = l:line + while(l:l <= line('$')) + if join(getline(l:l, l:l + 1), "\n") =~ get(s:levelRegexpDict, a:level) + return l:l + endif + let l:l += 1 + endwhile + return 0 +endfunction + +" Return the line number of the previous header of given level. +" in relation to line `a:1`. If not given, `a:1 = getline()` +" +" `a:1` line is included, and this may return the current header. +" +" If none return 0. +" +function! s:GetPreviousHeaderLineNumberAtLevel(level, ...) + if a:0 == 0 + let l:line = line('.') + else + let l:line = a:1 + endif + let l:l = l:line + while(l:l > 0) + if join(getline(l:l, l:l + 1), "\n") =~ get(s:levelRegexpDict, a:level) + return l:l + endif + let l:l -= 1 + endwhile + return 0 +endfunction + +" Move cursor to next sibling header. +" +" If there is no next siblings, print a warning and don't move. +" +function! s:MoveToNextSiblingHeader() + let l:curHeaderLineNumber = s:GetHeaderLineNum() + let l:curHeaderLevel = s:GetLevelOfHeaderAtLine(l:curHeaderLineNumber) + let l:curHeaderParentLineNumber = s:GetParentHeaderLineNumber() + let l:nextHeaderSameLevelLineNumber = s:GetNextHeaderLineNumberAtLevel(l:curHeaderLevel, l:curHeaderLineNumber + 1) + let l:noNextSibling = 0 + if l:nextHeaderSameLevelLineNumber == 0 + let l:noNextSibling = 1 + else + let l:nextHeaderSameLevelParentLineNumber = s:GetParentHeaderLineNumber(l:nextHeaderSameLevelLineNumber) + if l:curHeaderParentLineNumber == l:nextHeaderSameLevelParentLineNumber + call cursor(l:nextHeaderSameLevelLineNumber, 1) + else + let l:noNextSibling = 1 + endif + endif + if l:noNextSibling + echo 'no next sibling header' + endif +endfunction + +" Move cursor to previous sibling header. +" +" If there is no previous siblings, print a warning and do nothing. +" +function! s:MoveToPreviousSiblingHeader() + let l:curHeaderLineNumber = s:GetHeaderLineNum() + let l:curHeaderLevel = s:GetLevelOfHeaderAtLine(l:curHeaderLineNumber) + let l:curHeaderParentLineNumber = s:GetParentHeaderLineNumber() + let l:previousHeaderSameLevelLineNumber = s:GetPreviousHeaderLineNumberAtLevel(l:curHeaderLevel, l:curHeaderLineNumber - 1) + let l:noPreviousSibling = 0 + if l:previousHeaderSameLevelLineNumber == 0 + let l:noPreviousSibling = 1 + else + let l:previousHeaderSameLevelParentLineNumber = s:GetParentHeaderLineNumber(l:previousHeaderSameLevelLineNumber) + if l:curHeaderParentLineNumber == l:previousHeaderSameLevelParentLineNumber + call cursor(l:previousHeaderSameLevelLineNumber, 1) + else + let l:noPreviousSibling = 1 + endif + endif + if l:noPreviousSibling + echo 'no previous sibling header' + endif +endfunction + +function! s:Toc(...) + if a:0 > 0 + let l:window_type = a:1 + else + let l:window_type = 'vertical' + endif + + + let l:bufnr = bufnr('%') + let l:cursor_line = line('.') + let l:cursor_header = 0 + let l:fenced_block = 0 + let l:front_matter = 0 + let l:header_list = [] + let l:header_max_len = 0 + let l:vim_markdown_toc_autofit = get(g:, "vim_markdown_toc_autofit", 0) + let l:vim_markdown_frontmatter = get(g:, "vim_markdown_frontmatter", 0) + for i in range(1, line('$')) + let l:lineraw = getline(i) + let l:l1 = getline(i+1) + let l:line = substitute(l:lineraw, "#", "\\\#", "g") + if l:line =~ '````*' || l:line =~ '\~\~\~\~*' + if l:fenced_block == 0 + let l:fenced_block = 1 + elseif l:fenced_block == 1 + let l:fenced_block = 0 + endif + elseif l:vim_markdown_frontmatter == 1 + if l:front_matter == 1 + if l:line == '---' + let l:front_matter = 0 + endif + elseif i == 1 + if l:line == '---' + let l:front_matter = 1 + endif + endif + endif + if l:line =~ '^#\+' || (l:l1 =~ '^=\+\s*$' || l:l1 =~ '^-\+\s*$') && l:line =~ '^\S' + let l:is_header = 1 + else + let l:is_header = 0 + endif + if l:is_header == 1 && l:fenced_block == 0 && l:front_matter == 0 + " append line to location list + let l:item = {'lnum': i, 'text': l:line, 'valid': 1, 'bufnr': l:bufnr, 'col': 1} + let l:header_list = l:header_list + [l:item] + " set header number of the cursor position + if l:cursor_header == 0 + if i == l:cursor_line + let l:cursor_header = len(l:header_list) + elseif i > l:cursor_line + let l:cursor_header = len(l:header_list) - 1 + endif + endif + " keep track of the longest header size (heading level + title) + let l:total_len = stridx(l:line, ' ') + strdisplaywidth(l:line) + if l:total_len > l:header_max_len + let l:header_max_len = l:total_len + endif + endif + endfor + call setloclist(0, l:header_list) + if len(l:header_list) == 0 + echom "Toc: No headers." + return + endif + + if l:window_type ==# 'horizontal' + lopen + elseif l:window_type ==# 'vertical' + vertical lopen + " auto-fit toc window when possible to shrink it + if (&columns/2) > l:header_max_len && l:vim_markdown_toc_autofit == 1 + execute 'vertical resize ' . (l:header_max_len + 1) + else + execute 'vertical resize ' . (&columns/2) + endif + elseif l:window_type ==# 'tab' + tab lopen + else + lopen + endif + setlocal modifiable + for i in range(1, line('$')) + " this is the location-list data for the current item + let d = getloclist(0)[i-1] + " atx headers + if match(d.text, "^#") > -1 + let l:level = len(matchstr(d.text, '#*', 'g'))-1 + let d.text = substitute(d.text, '\v^#*[ ]*', '', '') + let d.text = substitute(d.text, '\v[ ]*#*$', '', '') + " setex headers + else + let l:next_line = getbufline(d.bufnr, d.lnum+1) + if match(l:next_line, "=") > -1 + let l:level = 0 + elseif match(l:next_line, "-") > -1 + let l:level = 1 + endif + endif + call setline(i, repeat(' ', l:level). d.text) + endfor + setlocal nomodified + setlocal nomodifiable + execute 'normal! ' . l:cursor_header . 'G' +endfunction + +" Convert Setex headers in range `line1 .. line2` to Atx. +" +" Return the number of conversions. +" +function! s:SetexToAtx(line1, line2) + let l:originalNumLines = line('$') + execute 'silent! ' . a:line1 . ',' . a:line2 . 'substitute/\v(.*\S.*)\n\=+$/# \1/' + execute 'silent! ' . a:line1 . ',' . a:line2 . 'substitute/\v(.*\S.*)\n-+$/## \1/' + return l:originalNumLines - line('$') +endfunction + +" If `a:1` is 0, decrease the level of all headers in range `line1 .. line2`. +" +" Otherwise, increase the level. `a:1` defaults to `0`. +" +function! s:HeaderDecrease(line1, line2, ...) + if a:0 > 0 + let l:increase = a:1 + else + let l:increase = 0 + endif + if l:increase + let l:forbiddenLevel = 6 + let l:replaceLevels = [5, 1] + let l:levelDelta = 1 + else + let l:forbiddenLevel = 1 + let l:replaceLevels = [2, 6] + let l:levelDelta = -1 + endif + for l:line in range(a:line1, a:line2) + if join(getline(l:line, l:line + 1), "\n") =~ s:levelRegexpDict[l:forbiddenLevel] + echomsg 'There is an h' . l:forbiddenLevel . ' at line ' . l:line . '. Aborting.' + return + endif + endfor + let l:numSubstitutions = s:SetexToAtx(a:line1, a:line2) + let l:flags = (&gdefault ? '' : 'g') + for l:level in range(replaceLevels[0], replaceLevels[1], -l:levelDelta) + execute 'silent! ' . a:line1 . ',' . (a:line2 - l:numSubstitutions) . 'substitute/' . s:levelRegexpDict[l:level] . '/' . repeat('#', l:level + l:levelDelta) . '/' . l:flags + endfor +endfunction + +" Format table under cursor. +" +" Depends on Tabularize. +" +function! s:TableFormat() + let l:pos = getpos('.') + normal! { + " Search instead of `normal! j` because of the table at beginning of file edge case. + call search('|') + normal! j + " Remove everything that is not a pipe, colon or hyphen next to a colon othewise + " well formated tables would grow because of addition of 2 spaces on the separator + " line by Tabularize /|. + let l:flags = (&gdefault ? '' : 'g') + execute 's/\(:\@<!-:\@!\|[^|:-]\)//e' . l:flags + execute 's/--/-/e' . l:flags + Tabularize /| + " Move colons for alignment to left or right side of the cell. + execute 's/:\( \+\)|/\1:|/e' . l:flags + execute 's/|\( \+\):/|:\1/e' . l:flags + execute 's/ /-/' . l:flags + call setpos('.', l:pos) +endfunction + +" Wrapper to do move commands in visual mode. +" +function! s:VisMove(f) + norm! gv + call function(a:f)() +endfunction + +" Map in both normal and visual modes. +" +function! s:MapNormVis(rhs,lhs) + execute 'nn <buffer><silent> ' . a:rhs . ' :call ' . a:lhs . '()<cr>' + execute 'vn <buffer><silent> ' . a:rhs . ' <esc>:call <sid>VisMove(''' . a:lhs . ''')<cr>' +endfunction + +" Parameters: +" +" - step +1 for right, -1 for left +" +" TODO: multiple lines. +" +function! s:FindCornerOfSyntax(lnum, col, step) + let l:col = a:col + let l:syn = synIDattr(synID(a:lnum, l:col, 1), 'name') + while synIDattr(synID(a:lnum, l:col, 1), 'name') ==# l:syn + let l:col += a:step + endwhile + return l:col - a:step +endfunction + +" Return the next position of the given syntax name, +" inclusive on the given position. +" +" TODO: multiple lines +" +function! s:FindNextSyntax(lnum, col, name) + let l:col = a:col + let l:step = 1 + while synIDattr(synID(a:lnum, l:col, 1), 'name') !=# a:name + let l:col += l:step + endwhile + return [a:lnum, l:col] +endfunction + +function! s:FindCornersOfSyntax(lnum, col) + return [<sid>FindLeftOfSyntax(a:lnum, a:col), <sid>FindRightOfSyntax(a:lnum, a:col)] +endfunction + +function! s:FindRightOfSyntax(lnum, col) + return <sid>FindCornerOfSyntax(a:lnum, a:col, 1) +endfunction + +function! s:FindLeftOfSyntax(lnum, col) + return <sid>FindCornerOfSyntax(a:lnum, a:col, -1) +endfunction + +" Returns: +" +" - a string with the the URL for the link under the cursor +" - an empty string if the cursor is not on a link +" +" TODO +" +" - multiline support +" - give an error if the separator does is not on a link +" +function! s:Markdown_GetUrlForPosition(lnum, col) + let l:lnum = a:lnum + let l:col = a:col + let l:syn = synIDattr(synID(l:lnum, l:col, 1), 'name') + + if l:syn ==# 'mkdInlineURL' || l:syn ==# 'mkdURL' || l:syn ==# 'mkdLinkDefTarget' + " Do nothing. + elseif l:syn ==# 'mkdLink' + let [l:lnum, l:col] = <sid>FindNextSyntax(l:lnum, l:col, 'mkdURL') + let l:syn = 'mkdURL' + elseif l:syn ==# 'mkdDelimiter' + let l:line = getline(l:lnum) + let l:char = l:line[col - 1] + if l:char ==# '<' + let l:col += 1 + elseif l:char ==# '>' || l:char ==# ')' + let l:col -= 1 + elseif l:char ==# '[' || l:char ==# ']' || l:char ==# '(' + let [l:lnum, l:col] = <sid>FindNextSyntax(l:lnum, l:col, 'mkdURL') + else + return '' + endif + else + return '' + endif + + let [l:left, l:right] = <sid>FindCornersOfSyntax(l:lnum, l:col) + return getline(l:lnum)[l:left - 1 : l:right - 1] +endfunction + +" Front end for GetUrlForPosition. +" +function! s:OpenUrlUnderCursor() + let l:url = s:Markdown_GetUrlForPosition(line('.'), col('.')) + if l:url != '' + call s:VersionAwareNetrwBrowseX(l:url) + else + echomsg 'The cursor is not on a link.' + endif +endfunction + +" We need a definition guard because we invoke 'edit' which will reload this +" script while this function is running. We must not replace it. +if !exists('*s:EditUrlUnderCursor') + function s:EditUrlUnderCursor() + let l:url = s:Markdown_GetUrlForPosition(line('.'), col('.')) + if l:url != '' + if get(g:, 'vim_markdown_autowrite', 0) + write + endif + let l:anchor = '' + if get(g:, 'vim_markdown_follow_anchor', 0) + let l:parts = split(l:url, '#', 1) + if len(l:parts) == 2 + let [l:url, l:anchor] = parts + let l:anchorexpr = get(g:, 'vim_markdown_anchorexpr', '') + if l:anchorexpr != '' + let l:anchor = eval(substitute( + \ l:anchorexpr, 'v:anchor', + \ escape('"'.l:anchor.'"', '"'), '')) + endif + endif + endif + if l:url != '' + let l:ext = '' + if get(g:, 'vim_markdown_no_extensions_in_markdown', 0) + " use another file extension if preferred + if exists('g:vim_markdown_auto_extension_ext') + let l:ext = '.'.g:vim_markdown_auto_extension_ext + else + let l:ext = '.md' + endif + endif + let l:url = fnameescape(fnamemodify(expand('%:h').'/'.l:url.l:ext, ':.')) + let l:editmethod = '' + " determine how to open the linked file (split, tab, etc) + if exists('g:vim_markdown_edit_url_in') + if g:vim_markdown_edit_url_in == 'tab' + let l:editmethod = 'tabnew' + elseif g:vim_markdown_edit_url_in == 'vsplit' + let l:editmethod = 'vsp' + elseif g:vim_markdown_edit_url_in == 'hsplit' + let l:editmethod = 'sp' + else + let l:editmethod = 'edit' + endif + else + " default to current buffer + let l:editmethod = 'edit' + endif + execute l:editmethod l:url + endif + if l:anchor != '' + silent! execute '/'.l:anchor + endif + else + echomsg 'The cursor is not on a link.' + endif + endfunction +endif + +function! s:VersionAwareNetrwBrowseX(url) + if has('patch-7.4.567') + call netrw#BrowseX(a:url, 0) + else + call netrw#NetrwBrowseX(a:url, 0) + endif +endf + +function! s:MapNotHasmapto(lhs, rhs) + if !hasmapto('<Plug>' . a:rhs) + execute 'nmap <buffer>' . a:lhs . ' <Plug>' . a:rhs + execute 'vmap <buffer>' . a:lhs . ' <Plug>' . a:rhs + endif +endfunction + +call <sid>MapNormVis('<Plug>Markdown_MoveToNextHeader', '<sid>MoveToNextHeader') +call <sid>MapNormVis('<Plug>Markdown_MoveToPreviousHeader', '<sid>MoveToPreviousHeader') +call <sid>MapNormVis('<Plug>Markdown_MoveToNextSiblingHeader', '<sid>MoveToNextSiblingHeader') +call <sid>MapNormVis('<Plug>Markdown_MoveToPreviousSiblingHeader', '<sid>MoveToPreviousSiblingHeader') +call <sid>MapNormVis('<Plug>Markdown_MoveToParentHeader', '<sid>MoveToParentHeader') +call <sid>MapNormVis('<Plug>Markdown_MoveToCurHeader', '<sid>MoveToCurHeader') +nnoremap <Plug>Markdown_OpenUrlUnderCursor :call <sid>OpenUrlUnderCursor()<cr> +nnoremap <Plug>Markdown_EditUrlUnderCursor :call <sid>EditUrlUnderCursor()<cr> + +if !get(g:, 'vim_markdown_no_default_key_mappings', 0) + call <sid>MapNotHasmapto(']]', 'Markdown_MoveToNextHeader') + call <sid>MapNotHasmapto('[[', 'Markdown_MoveToPreviousHeader') + call <sid>MapNotHasmapto('][', 'Markdown_MoveToNextSiblingHeader') + call <sid>MapNotHasmapto('[]', 'Markdown_MoveToPreviousSiblingHeader') + call <sid>MapNotHasmapto(']u', 'Markdown_MoveToParentHeader') + call <sid>MapNotHasmapto(']c', 'Markdown_MoveToCurHeader') + call <sid>MapNotHasmapto('gx', 'Markdown_OpenUrlUnderCursor') + call <sid>MapNotHasmapto('ge', 'Markdown_EditUrlUnderCursor') +endif + +command! -buffer -range=% HeaderDecrease call s:HeaderDecrease(<line1>, <line2>) +command! -buffer -range=% HeaderIncrease call s:HeaderDecrease(<line1>, <line2>, 1) +command! -buffer -range=% SetexToAtx call s:SetexToAtx(<line1>, <line2>) +command! -buffer TableFormat call s:TableFormat() +command! -buffer Toc call s:Toc() +command! -buffer Toch call s:Toc('horizontal') +command! -buffer Tocv call s:Toc('vertical') +command! -buffer Toct call s:Toc('tab') + +" Heavily based on vim-notes - http://peterodding.com/code/vim/notes/ +if exists('g:vim_markdown_fenced_languages') + let s:filetype_dict = {} + for s:filetype in g:vim_markdown_fenced_languages + let key = matchstr(s:filetype, "[^=]*") + let val = matchstr(s:filetype, "[^=]*$") + let s:filetype_dict[key] = val + endfor +else + let s:filetype_dict = { + \ 'c++': 'cpp', + \ 'viml': 'vim', + \ 'bash': 'sh', + \ 'ini': 'dosini' + \ } +endif + +function! s:MarkdownHighlightSources(force) + " Syntax highlight source code embedded in notes. + " Look for code blocks in the current file + let filetypes = {} + for line in getline(1, '$') + let ft = matchstr(line, '```\s*\zs[0-9A-Za-z_+-]*') + if !empty(ft) && ft !~ '^\d*$' | let filetypes[ft] = 1 | endif + endfor + if !exists('b:mkd_known_filetypes') + let b:mkd_known_filetypes = {} + endif + if !exists('b:mkd_included_filetypes') + " set syntax file name included + let b:mkd_included_filetypes = {} + endif + if !a:force && (b:mkd_known_filetypes == filetypes || empty(filetypes)) + return + endif + + " Now we're ready to actually highlight the code blocks. + let startgroup = 'mkdCodeStart' + let endgroup = 'mkdCodeEnd' + for ft in keys(filetypes) + if a:force || !has_key(b:mkd_known_filetypes, ft) + if has_key(s:filetype_dict, ft) + let filetype = s:filetype_dict[ft] + else + let filetype = ft + endif + let group = 'mkdSnippet' . toupper(substitute(filetype, "[+-]", "_", "g")) + if !has_key(b:mkd_included_filetypes, filetype) + let include = s:SyntaxInclude(filetype) + let b:mkd_included_filetypes[filetype] = 1 + else + let include = '@' . toupper(filetype) + endif + let command = 'syntax region %s matchgroup=%s start="^\s*```\s*%s$" matchgroup=%s end="\s*```$" keepend contains=%s%s' + execute printf(command, group, startgroup, ft, endgroup, include, has('conceal') && get(g:, 'vim_markdown_conceal', 1) && get(g:, 'vim_markdown_conceal_code_blocks', 1) ? ' concealends' : '') + execute printf('syntax cluster mkdNonListItem add=%s', group) + + let b:mkd_known_filetypes[ft] = 1 + endif + endfor +endfunction + +function! s:SyntaxInclude(filetype) + " Include the syntax highlighting of another {filetype}. + let grouplistname = '@' . toupper(a:filetype) + " Unset the name of the current syntax while including the other syntax + " because some syntax scripts do nothing when "b:current_syntax" is set + if exists('b:current_syntax') + let syntax_save = b:current_syntax + unlet b:current_syntax + endif + try + execute 'syntax include' grouplistname 'syntax/' . a:filetype . '.vim' + execute 'syntax include' grouplistname 'after/syntax/' . a:filetype . '.vim' + catch /E484/ + " Ignore missing scripts + endtry + " Restore the name of the current syntax + if exists('syntax_save') + let b:current_syntax = syntax_save + elseif exists('b:current_syntax') + unlet b:current_syntax + endif + return grouplistname +endfunction + + +function! s:MarkdownRefreshSyntax(force) + if &filetype =~ 'markdown' && line('$') > 1 + call s:MarkdownHighlightSources(a:force) + endif +endfunction + +function! s:MarkdownClearSyntaxVariables() + if &filetype =~ 'markdown' + unlet! b:mkd_included_filetypes + endif +endfunction + +augroup Mkd + " These autocmd calling s:MarkdownRefreshSyntax need to be kept in sync with + " the autocmds calling s:MarkdownSetupFolding in after/ftplugin/markdown.vim. + autocmd! * <buffer> + autocmd BufWinEnter <buffer> call s:MarkdownRefreshSyntax(1) + autocmd BufUnload <buffer> call s:MarkdownClearSyntaxVariables() + autocmd BufWritePost <buffer> call s:MarkdownRefreshSyntax(0) + autocmd InsertEnter,InsertLeave <buffer> call s:MarkdownRefreshSyntax(0) + autocmd CursorHold,CursorHoldI <buffer> call s:MarkdownRefreshSyntax(0) +augroup END + +endif |