Refactoring the fenced code block handling of folding

[etc/vim.git] / ftplugin / markdown.vim

diff --git a/ftplugin/markdown.vim b/ftplugin/markdown.vim
index 74bbc541c0c28a3d19208b95ce06a41941fed8c2..3f084f2bd73463b8122210806f6d01a3b6babcd7 100644 (file)
--- a/ftplugin/markdown.vim
+++ b/ftplugin/markdown.vim
@@ -302,12 +302,38 @@ function! s:Toc(...)
         let l:window_type = 'vertical'
     endif
 
-    try
-        silent lvimgrep /\(^\S.*\(\n[=-]\+\n\)\@=\|^#\+\)/ %
-    catch /E480/
+
+    let b:bufnr = bufnr('%')
+    let b:fenced_block = 0
+    let b:header_list = []
+    let l:header_max_len = 0
+    for i in range(1, line('$'))
+        let l:lineraw = getline(i)
+        let l:l1 = getline(i+1)
+        let l:line = substitute(l:lineraw, "#", "\\\#", "g")
+        if l:line =~ '````*' || l:line =~ '\~\~\~\~*'
+            if b:fenced_block == 0
+                let b:fenced_block = 1
+            elseif b:fenced_block == 1
+                let b:fenced_block = 0
+            endif
+        endif
+        if l:line =~ '^#\+' || (l:l1 =~ '^=\+\s*$' || l:l1 =~ '^-\+\s*$') && l:line =~ '^\S'
+            let b:is_header = 1
+        else
+            let b:is_header = 0
+        endif
+        if b:is_header == 1 && b:fenced_block == 0
+            " append line to location list
+            let b:item = {'lnum': i, 'text': l:line, 'valid': 1, 'bufnr': b:bufnr, 'col': 1}
+            let b:header_list = b:header_list + [b:item]
+        endif
+    endfor
+    if len(b:header_list) == 0
         echom "Toc: No headers."
         return
-    endtry
+    endif
+    call setloclist(0, b:header_list)
 
     if l:window_type ==# 'horizontal'
         lopen
@@ -555,12 +581,17 @@ 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/
+let s:filetype_dict = {
+    \ 'c++': 'cpp',
+    \ 'viml': 'vim'
+\ }
+
 function! s:Markdown_highlight_sources(force)
     " Syntax highlight source code embedded in notes.
     " Look for code blocks in the current file
     let filetypes = {}
     for line in getline(1, '$')
-        let ft = matchstr(line, '```\zs\w*\>')
+        let ft = matchstr(line, '```\zs[0-9A-Za-z_+-]*')
         if !empty(ft) && ft !~ '^\d*$' | let filetypes[ft] = 1 | endif
     endfor
     if !exists('b:mkd_known_filetypes')
@@ -575,9 +606,13 @@ 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)
+            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"))
+            let include = s:syntax_include(filetype)
             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' : '')
             execute printf('syntax cluster mkdNonListItem add=%s', group)