X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/6764c57a44362da5ce0bf142f996c45e63b0a581..0afd53fec1a84f20f48cbd0c0272aa567004a193:/after/ftplugin/markdown.vim

diff --git a/after/ftplugin/markdown.vim b/after/ftplugin/markdown.vim
index d965a71..91139ce 100644
--- a/after/ftplugin/markdown.vim
+++ b/after/ftplugin/markdown.vim
@@ -1,3 +1,4 @@
+" vim: ts=4:
 " folding for Markdown headers, both styles (atx- and setex-)
 " http://daringfireball.net/projects/markdown/syntax#header
 "
@@ -7,24 +8,73 @@
 " original version from Steve Losh's gist: https://gist.github.com/1038710
 
 function! s:is_mkdCode(lnum)
-    return synIDattr(synID(a:lnum, 1, 0), 'name') == 'mkdCode'
+    let name = synIDattr(synID(a:lnum, 1, 0), 'name')
+    return (name =~ '^mkd\%(Code$\|Snippet\)' || name != '' && name !~ '^\%(mkd\|html\)')
 endfunction
 
 if get(g:, "vim_markdown_folding_style_pythonic", 0)
     function! Foldexpr_markdown(lnum)
+        let l1 = getline(a:lnum)
+        "~~~~~ keep track of fenced code blocks ~~~~~
+		"If we hit a code block fence
+        if l1 =~ '````*' || l1 =~ '\~\~\~\~*'
+			" toggle the variable that says if we're in a code block
+            if b:fenced_block == 0
+                let b:fenced_block = 1
+            elseif b:fenced_block == 1
+                let b:fenced_block = 0
+            endif
+		" else, if we're caring about front matter
+        elseif g:vim_markdown_frontmatter == 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'
+		" else, if the nex line starts with two or more '-'
+		" 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 we're on a non-code line starting with a pound sign
         if l1 =~ '^#' && !s:is_mkdCode(a:lnum)
-            " current line starts with hashes
-            return '>'.(matchend(l1, '^#\+') - 1)
+			" 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'
@@ -45,30 +95,68 @@ if get(g:, "vim_markdown_folding_style_pythonic", 0)
         let fillcharcount = windowwidth - len(line) - len(foldedlinecount) + 1
         return line . ' ' . repeat("-", fillcharcount) . ' ' . foldedlinecount
     endfunction
-else
+else " vim_markdown_folding_style_pythonic == 1
     function! Foldexpr_markdown(lnum)
+        if (a:lnum == 1)
+            let l0 = ''
+        else
+            let l0 = getline(a:lnum-1)
+        endif
+
+        " keep track of fenced code blocks
+        if l0 =~ '````*' || l0 =~ '\~\~\~\~*'
+            if b:fenced_block == 0
+                let b:fenced_block = 1
+            elseif b:fenced_block == 1
+                let b:fenced_block = 0
+            endif
+        elseif g:vim_markdown_frontmatter == 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)
             " next line is underlined (level 1)
             return '>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'
+            " 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
+            " previous line starts with hashes
             return '>'.matchend(l0, '^#\+')
         else
             " keep previous foldlevel
@@ -77,10 +165,15 @@ else
     endfunction
 endif
 
+
+let b:fenced_block = 0
+let b:front_matter = 0
+let s:vim_markdown_folding_level = get(g:, "vim_markdown_folding_level", 1)
+
 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)
+    if get(g:, "vim_markdown_folding_style_pythonic", 0) && get(g:, "vim_markdown_override_foldtext", 1)
         setlocal foldtext=Foldtext_markdown()
     endif
 endif