Merge pull request #243 from alexconst/feat/toc_autofit

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

diff --git a/after/ftplugin/markdown.vim b/after/ftplugin/markdown.vim
index 1916a730cfe901e6fdca2204d807a7d9f699ad91..777ddace57db29e70dde6ce2f9fec97209c72e7b 100644 (file)
--- a/after/ftplugin/markdown.vim
+++ b/after/ftplugin/markdown.vim
@@ -7,13 +7,34 @@
 " original version from Steve Losh's gist: https://gist.github.com/1038710
 
 function! s:is_mkdCode(lnum)
 " 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)
 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 l1 =~ '````*' || l1 =~ '\~\~\~\~*'
+            if b:fenced_block == 0
+                let b:fenced_block = 1
+            elseif b:fenced_block == 1
+                let b:fenced_block = 0
+            endif
+        endif
+
+        if b:fenced_block == 1
+            if a:lnum == 1
+                " fold any 'preamble'
+                return '>1'
+            else
+                " keep previous foldlevel
+                return '='
+            endif
+        endif
+

         let l2 = getline(a:lnum+1)
         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 '>0'
         elseif 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)


@@ -21,7 +42,6 @@ if get(g:, "vim_markdown_folding_style_pythonic", 0)
             return '>1'
         endif
 
             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 l1 =~ '^#' && !s:is_mkdCode(a:lnum)
             " current line starts with hashes
             return '>'.(matchend(l1, '^#\+') - 1)


@@ -52,8 +72,9 @@ else
         else
             let l0 = getline(a:lnum-1)
         endif
         else
             let l0 = getline(a:lnum-1)
         endif

+

         " keep track of fenced code blocks
         " keep track of fenced code blocks

-        if l0 =~ '````*' || l0 =~ '~~~~*'
+        if l0 =~ '````*' || l0 =~ '\~\~\~\~*'

             if b:fenced_block == 0
                 let b:fenced_block = 1
             elseif b:fenced_block == 1
             if b:fenced_block == 0
                 let b:fenced_block = 1
             elseif b:fenced_block == 1


@@ -61,16 +82,21 @@ else
             endif
         endif
 
             endif
         endif
 

+        if b:fenced_block == 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)
         let l2 = getline(a:lnum+1)
         if  l2 =~ '^==\+\s*' && !s:is_mkdCode(a:lnum+1)
             " next line is underlined (level 1)

-            return 0
+            return '>1'

         elseif l2 =~ '^--\+\s*' && !s:is_mkdCode(a:lnum+1)
             " next line is underlined (level 2)
         elseif l2 =~ '^--\+\s*' && !s:is_mkdCode(a:lnum+1)
             " next line is underlined (level 2)

-            if g:vim_markdown_folding_level == 2
-                return 0
+            if g:vim_markdown_folding_level >= 2
+                return '>1'

             else
             else

-                return 1
+                return '>2'

             endif
         endif
 
             endif
         endif
 


@@ -81,21 +107,17 @@ else
             if g:vim_markdown_folding_level == 1 || l:level > g:vim_markdown_folding_level
                 return -1
             else
             if g:vim_markdown_folding_level == 1 || l:level > g:vim_markdown_folding_level
                 return -1
             else

-                " code blocks are always folded
-                return b:fenced_block
+                " headers are not folded
+                return 0

             endif
         endif
 
         if l0 =~ '^#' && !s:is_mkdCode(a:lnum-1)
             endif
         endif
 
         if l0 =~ '^#' && !s:is_mkdCode(a:lnum-1)

-            " collapse comments in fenced code blocks into a single fold
-            if b:fenced_block == 1
-                return 1
-            endif

             " current line starts with hashes
             return '>'.matchend(l0, '^#\+')
         else
             " fold here because of setext headers
             " current line starts with hashes
             return '>'.matchend(l0, '^#\+')
         else
             " fold here because of setext headers

-            return 1
+            return '='

         endif
     endfunction
 endif
         endif
     endfunction
 endif