X-Git-Url: https://git.madduck.net/etc/vim.git/blobdiff_plain/f978e653773fdd612fd2e1823ff6646a682ff8d5..de9d81d8cbe132d16a2cabafa1db2f0de03b6a31:/after/ftplugin/markdown.vim

diff --git a/after/ftplugin/markdown.vim b/after/ftplugin/markdown.vim
index 777ddac..41dfd94 100644
--- a/after/ftplugin/markdown.vim
+++ b/after/ftplugin/markdown.vim
@@ -21,9 +21,20 @@ if get(g:, "vim_markdown_folding_style_pythonic", 0)
             elseif b:fenced_block == 1
                 let b:fenced_block = 0
             endif
+        elseif g:vim_markdown_frontmatter == 1
+            if b:front_matter == 1 && a:lnum > 2
+                let l0 = getline(a:lnum-1)
+                if l0 == '---'
+                    let b:front_matter = 0
+                endif
+            elseif a:lnum == 1
+                if l1 == '---'
+                    let b:front_matter = 1
+                endif
+            endif
         endif
 
-        if b:fenced_block == 1
+        if b:fenced_block == 1 || b:front_matter == 1
             if a:lnum == 1
                 " fold any 'preamble'
                 return '>1'
@@ -80,9 +91,19 @@ else
             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
+        if b:fenced_block == 1 || b:front_matter == 1
             " keep previous foldlevel
             return '='
         endif
@@ -93,7 +114,7 @@ else
             return '>1'
         elseif l2 =~ '^--\+\s*' && !s:is_mkdCode(a:lnum+1)
             " next line is underlined (level 2)
-            if g:vim_markdown_folding_level >= 2
+            if s:vim_markdown_folding_level >= 2
                 return '>1'
             else
                 return '>2'
@@ -103,9 +124,12 @@ else
         let l1 = getline(a:lnum)
         if l1 =~ '^#' && !s:is_mkdCode(a:lnum)
             " fold level according to option
-            let l:level = matchend(l1, '^#\+')
-            if g:vim_markdown_folding_level == 1 || l:level > g:vim_markdown_folding_level
-                return -1
+            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
@@ -113,10 +137,10 @@ else
         endif
 
         if l0 =~ '^#' && !s:is_mkdCode(a:lnum-1)
-            " current line starts with hashes
+            " previous line starts with hashes
             return '>'.matchend(l0, '^#\+')
         else
-            " fold here because of setext headers
+            " keep previous foldlevel
             return '='
         endif
     endfunction
@@ -124,12 +148,23 @@ endif
 
 
 let b:fenced_block = 0
-let g:vim_markdown_folding_level = get(g:, "vim_markdown_folding_level", 1)
+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)
-        setlocal foldtext=Foldtext_markdown()
-    endif
-endif
+function! s:MarkdownSetupFolding()
+  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) && get(g:, "vim_markdown_override_foldtext", 1)
+          setlocal foldtext=Foldtext_markdown()
+      endif
+  endif
+endfunction
+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 <buffer> call s:MarkdownSetupFolding()
+    autocmd InsertEnter,InsertLeave <buffer> call s:MarkdownSetupFolding()
+    autocmd CursorHold,CursorHoldI <buffer> call s:MarkdownSetupFolding()
+augroup END