X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/824e85c3e7b40466c2a375e37c7e81a0584c7a79..c58a4f3586473f7476510714698e60835fcb94ef:/after/ftplugin/markdown.vim diff --git a/after/ftplugin/markdown.vim b/after/ftplugin/markdown.vim index 3603485a..390515ff 100644 --- a/after/ftplugin/markdown.vim +++ b/after/ftplugin/markdown.vim @@ -1,3 +1,4 @@ +" vim: ts=4 sw=4: " folding for Markdown headers, both styles (atx- and setex-) " http://daringfireball.net/projects/markdown/syntax#header " @@ -8,24 +9,79 @@ function! s:is_mkdCode(lnum) let name = synIDattr(synID(a:lnum, 1, 0), 'name') - return (name =~ '^mkd\%(Code$\|Snippet\)' || name != '' && name !~ '^\%(mkd\|html\)') + return (name =~# '^mkd\%(Code$\|Snippet\)' || name !=# '' && name !~? '^\%(mkd\|html\)') endfunction -if get(g:, "vim_markdown_folding_style_pythonic", 0) +if get(g:, 'vim_markdown_folding_style_pythonic', 0) function! Foldexpr_markdown(lnum) + if (a:lnum == 1) + let b:fence_str = '' + endif + + let l1 = getline(a:lnum) + "~~~~~ keep track of fenced code blocks ~~~~~ + "If we hit a code block fence + if l1 =~# '\v^[[:space:]>]*\v(`{3,}|\~{3,})\s*(\w+)?\s*$' + " toggle the variable that says if we're in a code block + if b:fenced_block == 0 + let b:fenced_block = 1 + let b:fence_str = matchstr(l1, '\v(`{3,}|\~{3,})') + elseif b:fenced_block == 1 && matchstr(l1, '\v(`{3,}|\~{3,})') ==# b:fence_str + let b:fenced_block = 0 + let b:fence_str = '' + endif + " else, if we're caring about front matter + elseif get(g:, 'vim_markdown_frontmatter', 0) == 1 + " if we're in front matter and not on line 1 + if b:front_matter == 1 && a:lnum > 2 + let l0 = getline(a:lnum-1) + " if the previous line fenced front matter + if l0 ==# '---' + " we must not be in front matter + let b:front_matter = 0 + endif + " else, if we're on line one + elseif a:lnum == 1 + " if we hit a front matter fence + if l1 ==# '---' + " we're in the front matter + let b:front_matter = 1 + endif + endif + endif + + " if we're in a code block or front matter + if b:fenced_block ==# 1 || b:front_matter ==# 1 + if a:lnum ==# 1 + " fold any 'preamble' + return '>1' + else + " keep previous foldlevel + return '=' + endif + endif + let l2 = getline(a:lnum+1) - if l2 =~ '^==\+\s*' && !s:is_mkdCode(a:lnum+1) + " if the next line starts with two or more '=' + " and is not code + if l2 =~# '^==\+\s*' && !s:is_mkdCode(a:lnum+1) " next line is underlined (level 1) return '>0' - elseif l2 =~ '^--\+\s*' && !s:is_mkdCode(a:lnum+1) + " else, if the nex line starts with two or more '-' + " but is not comment closer (-->) + " and is not code + elseif l2 =~# '^--\+\s*$' && !s:is_mkdCode(a:lnum+1) " next line is underlined (level 2) return '>1' endif - let l1 = getline(a:lnum) - if l1 =~ '^#' && !s:is_mkdCode(a:lnum) - " current line starts with hashes - return '>'.(matchend(l1, '^#\+') - 1) + "if we're on a non-code line starting with a pound sign + if l1 =~# '^#' && !s:is_mkdCode(a:lnum) + " set the fold level to the number of hashes -1 + " return '>'.(matchend(l1, '^#\+') - 1) + " set the fold level to the number of hashes + return '>'.(matchend(l1, '^#\+')) + " else, if we're on line 1 elseif a:lnum == 1 " fold any 'preamble' return '>1' @@ -38,38 +94,79 @@ if get(g:, "vim_markdown_folding_style_pythonic", 0) function! Foldtext_markdown() let line = getline(v:foldstart) let has_numbers = &number || &relativenumber - let nucolwidth = &fdc + has_numbers * &numberwidth + let nucolwidth = &foldcolumn + has_numbers * &numberwidth let windowwidth = winwidth(0) - nucolwidth - 6 let foldedlinecount = v:foldend - v:foldstart let line = strpart(line, 0, windowwidth - 2 -len(foldedlinecount)) let line = substitute(line, '\%("""\|''''''\)', '', '') let fillcharcount = windowwidth - len(line) - len(foldedlinecount) + 1 - return line . ' ' . repeat("-", fillcharcount) . ' ' . foldedlinecount + return line . ' ' . repeat('-', fillcharcount) . ' ' . foldedlinecount endfunction -else +else " vim_markdown_folding_style_pythonic == 0 function! Foldexpr_markdown(lnum) + if (a:lnum == 1) + let l0 = '' + let b:fence_str = '' + else + let l0 = getline(a:lnum-1) + endif + + " keep track of fenced code blocks + if l0 =~# '\v^[[:space:]>]*\v(`{3,}|\~{3,})\s*(\w+)?\s*$' + if b:fenced_block == 0 + let b:fenced_block = 1 + let b:fence_str = matchstr(l0, '\v(`{3,}|\~{3,})') + elseif b:fenced_block == 1 && matchstr(l0, '\v(`{3,}|\~{3,})') ==# b:fence_str + let b:fenced_block = 0 + let b:fence_str = '' + endif + elseif get(g:, 'vim_markdown_frontmatter', 0) == 1 + if b:front_matter == 1 + if l0 ==# '---' + let b:front_matter = 0 + endif + elseif a:lnum == 2 + if l0 ==# '---' + let b:front_matter = 1 + endif + endif + endif + + if b:fenced_block == 1 || b:front_matter == 1 + " keep previous foldlevel + return '=' + endif + let l2 = getline(a:lnum+1) - if l2 =~ '^==\+\s*' && !s:is_mkdCode(a:lnum+1) + if l2 =~# '^==\+\s*' && !s:is_mkdCode(a:lnum+1) " next line is underlined (level 1) return '>1' - elseif l2 =~ '^--\+\s*' && !s:is_mkdCode(a:lnum+1) + elseif l2 =~# '^--\+\s*$' && !s:is_mkdCode(a:lnum+1) " next line is underlined (level 2) - return '>2' + if s:vim_markdown_folding_level >= 2 + return '>1' + else + return '>2' + endif endif let l1 = getline(a:lnum) - if l1 =~ '^#' && !s:is_mkdCode(a:lnum) - " don't include the section title in the fold - return '-1' + if l1 =~# '^#' && !s:is_mkdCode(a:lnum) + " fold level according to option + if s:vim_markdown_folding_level == 1 || matchend(l1, '^#\+') > s:vim_markdown_folding_level + if a:lnum == line('$') + return matchend(l1, '^#\+') - 1 + else + return -1 + endif + else + " headers are not folded + return 0 + endif endif - if (a:lnum == 1) - let l0 = '' - else - let l0 = getline(a:lnum-1) - endif - if l0 =~ '^#' && !s:is_mkdCode(a:lnum-1) - " current line starts with hashes + if l0 =~# '^#' && !s:is_mkdCode(a:lnum-1) + " previous line starts with hashes return '>'.matchend(l0, '^#\+') else " keep previous foldlevel @@ -78,10 +175,37 @@ else endfunction endif -if !get(g:, "vim_markdown_folding_disabled", 0) - setlocal foldexpr=Foldexpr_markdown(v:lnum) - setlocal foldmethod=expr - if get(g:, "vim_markdown_folding_style_pythonic", 0) - setlocal foldtext=Foldtext_markdown() + +let b:fenced_block = 0 +let b:front_matter = 0 +let s:vim_markdown_folding_level = get(g:, 'vim_markdown_folding_level', 1) + +function! s:MarkdownSetupFolding() + if !get(g:, 'vim_markdown_folding_disabled', 0) + if get(g:, 'vim_markdown_folding_style_pythonic', 0) + if get(g:, 'vim_markdown_override_foldtext', 1) + setlocal foldtext=Foldtext_markdown() + endif + endif + setlocal foldexpr=Foldexpr_markdown(v:lnum) + setlocal foldmethod=expr endif -endif +endfunction + +function! s:MarkdownSetupFoldLevel() + if get(g:, 'vim_markdown_folding_style_pythonic', 0) + " set default foldlevel + execute 'setlocal foldlevel='.s:vim_markdown_folding_level + endif +endfunction + +call s:MarkdownSetupFoldLevel() +call s:MarkdownSetupFolding() + +augroup Mkd + " These autocmds need to be kept in sync with the autocmds calling + " s:MarkdownRefreshSyntax in ftplugin/markdown.vim. + autocmd BufWinEnter,BufWritePost call s:MarkdownSetupFolding() + autocmd InsertEnter,InsertLeave call s:MarkdownSetupFolding() + autocmd CursorHold,CursorHoldI call s:MarkdownSetupFolding() +augroup END