X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/a5786589c3c49199828d63ea403238ca95531d0b..a496e2b4898b1a0e271e885827ea1c737ecc3255:/ftplugin/markdown.vim

diff --git a/ftplugin/markdown.vim b/ftplugin/markdown.vim
index 74bbc54..d7c3777 100644
--- a/ftplugin/markdown.vim
+++ b/ftplugin/markdown.vim
@@ -302,18 +302,77 @@ function! s:Toc(...)
         let l:window_type = 'vertical'
     endif
 
-    try
-        silent lvimgrep /\(^\S.*\(\n[=-]\+\n\)\@=\|^#\+\)/ %
-    catch /E480/
+
+    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
-    endtry
+    endif
 
     if l:window_type ==# 'horizontal'
         lopen
     elseif l:window_type ==# 'vertical'
         vertical lopen
-        let &winwidth=(&columns/2)
+        " 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
@@ -341,7 +400,7 @@ function! s:Toc(...)
     endfor
     setlocal nomodified
     setlocal nomodifiable
-    normal! gg
+    execute 'normal! ' . l:cursor_header . 'G'
 endfunction
 
 " Convert Setex headers in range `line1 .. line2` to Atx.
@@ -397,11 +456,16 @@ function! s:TableFormat()
     " 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 othewise well formated tables would grow
-    " because of addition of 2 spaces on the separator line by Tabularize /|.
+    " 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/[^|]//' . l:flags
+    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
@@ -512,6 +576,44 @@ function! s:OpenUrlUnderCursor()
     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 != ''
+                if get(g:, 'vim_markdown_no_extensions_in_markdown', 0)
+                    let l:url .= '.md'
+                endif
+                let l:url = fnamemodify(expand('%:h').'/'.l:url, ':.')
+                execute 'edit' 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)
@@ -534,6 +636,7 @@ call <sid>MapNormVis('<Plug>Markdown_MoveToPreviousSiblingHeader', '<sid>MoveToP
 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')
@@ -543,6 +646,7 @@ if !get(g:, 'vim_markdown_no_default_key_mappings', 0)
     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>)
@@ -555,17 +659,37 @@ 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/
-function! s:Markdown_highlight_sources(force)
+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, '```\zs\w*\>')
+        let ft = matchstr(line, '```\s*\zs[0-9A-Za-z_+-]*')
         if !empty(ft) && ft !~ '^\d*$' | let filetypes[ft] = 1 | endif
     endfor
     if !exists('b:mkd_known_filetypes')
         let b:mkd_known_filetypes = {}
     endif
+    if !exists('b:mkd_included_filetypes')
+        " set syntax file name included
+        let b:mkd_included_filetypes = {}
+    endif
     if !a:force && (b:mkd_known_filetypes == filetypes || empty(filetypes))
         return
     endif
@@ -575,11 +699,20 @@ function! s:Markdown_highlight_sources(force)
     let endgroup = 'mkdCodeEnd'
     for ft in keys(filetypes)
         if a:force || !has_key(b:mkd_known_filetypes, ft)
-
-            let group = 'mkdSnippet' . toupper(ft)
-            let include = s:syntax_include(ft)
-            let command = 'syntax region %s matchgroup=%s start="^\s*```%s$" matchgroup=%s end="\s*```$" keepend contains=%s%s'
-            execute printf(command, group, startgroup, ft, endgroup, include, has('conceal') ? ' concealends' : '')
+            if has_key(s:filetype_dict, ft)
+                let filetype = s:filetype_dict[ft]
+            else
+                let filetype = ft
+            endif
+            let group = 'mkdSnippet' . toupper(substitute(filetype, "[+-]", "_", "g"))
+            if !has_key(b:mkd_included_filetypes, filetype)
+                let include = s:SyntaxInclude(filetype)
+                let b:mkd_included_filetypes[filetype] = 1
+            else
+                let include = '@' . toupper(filetype)
+            endif
+            let command = 'syntax region %s matchgroup=%s start="^\s*```\s*%s$" matchgroup=%s end="\s*```$" keepend contains=%s%s'
+            execute printf(command, group, startgroup, ft, endgroup, include, has('conceal') && get(g:, 'vim_markdown_conceal', 1) ? ' concealends' : '')
             execute printf('syntax cluster mkdNonListItem add=%s', group)
 
             let b:mkd_known_filetypes[ft] = 1
@@ -587,7 +720,7 @@ function! s:Markdown_highlight_sources(force)
     endfor
 endfunction
 
-function! s:syntax_include(filetype)
+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
@@ -612,16 +745,23 @@ function! s:syntax_include(filetype)
 endfunction
 
 
-function! s:Markdown_refresh_syntax(force)
+function! s:MarkdownRefreshSyntax(force)
     if &filetype == 'markdown' && line('$') > 1
-        call s:Markdown_highlight_sources(a:force)
+        call s:MarkdownHighlightSources(a:force)
+    endif
+endfunction
+
+function! s:MarkdownClearSyntaxVariables()
+    if &filetype == 'markdown'
+        unlet! b:mkd_included_filetypes
     endif
 endfunction
 
 augroup Mkd
     autocmd!
-    au BufWinEnter * call s:Markdown_refresh_syntax(1)
-    au BufWritePost * call s:Markdown_refresh_syntax(0)
-    au InsertEnter,InsertLeave * call s:Markdown_refresh_syntax(0)
-    au CursorHold,CursorHoldI * call s:Markdown_refresh_syntax(0)
+    au BufWinEnter * call s:MarkdownRefreshSyntax(1)
+    au BufUnload * call s:MarkdownClearSyntaxVariables()
+    au BufWritePost * call s:MarkdownRefreshSyntax(0)
+    au InsertEnter,InsertLeave * call s:MarkdownRefreshSyntax(0)
+    au CursorHold,CursorHoldI * call s:MarkdownRefreshSyntax(0)
 augroup END