Support YAML frontmatter headers v2.
## Options
-**Disable Folding**
+### Disable Folding
Add the following line to your `.vimrc` to disable folding.
let g:vim_markdown_folding_disabled=1
```
-**Set Initial Foldlevel**
+### Set Initial Foldlevel
Add the following line to your `.vimrc` to set the initial foldlevel. This option defaults to 0 (i.e. all folds are closed) and is ignored if folding is disabled.
let g:vim_markdown_initial_foldlevel=1
```
-**Disable Default Key Mappings**
+### Disable Default Key Mappings
Add the following line to your `.vimrc` to disable default key mappings. You can map them by yourself with `<Plug>` mappings.
let g:vim_markdown_no_default_key_mappings=1
```
-**Syntax extensions**
+### Syntax extensions
-The following options control which syntax extensions will be turned on.
+The following options control which syntax extensions will be turned on. They are off by default.
-LaTeX math: `$ $`, `$$ $$`, escapable as `\$ \$` and `\$\$ \$\$`:
+#### LaTeX math
+
+Used as `$x^2$`, `$$x^2$$`, escapable as `\$x\$` and `\$\$x\$\$`.
```vim
let g:vim_markdown_math=1
```
+
+#### YAML frontmatter
+
+Highlight YAML frontmatter as used by Jekyll:
+
+```vim
+let g:vim_markdown_frontmatter=1
+```
+
## Mappings
The following work on normal and visual modes:
syn cluster mkdNonListItem contains=htmlItalic,htmlBold,htmlBoldItalic,mkdFootnotes,mkdID,mkdURL,mkdLink,mkdLinkDef,mkdLineBreak,mkdBlockquote,mkdCode,mkdMath,mkdIndentCode,mkdListItem,mkdRule,htmlH1,htmlH2,htmlH3,htmlH4,htmlH5,htmlH6
+" YAML frontmatter
+if get(g:, 'vim_markdown_frontmatter', 0)
+ syn include @yamlTop syntax/yaml.vim
+ syn region Comment matchgroup=mkdDelimiter start="\%^---$" end="^---$" contains=@yamlTop
+endif
+
"highlighting for Markdown groups
HtmlHiLink mkdString String
HtmlHiLink mkdCode String
AssertNotEqual SyntaxOf('a'), 'mkdMath'
AssertEqual SyntaxOf('b'), 'mkdMath'
AssertNotEqual SyntaxOf('c'), 'mkdMath'
+
+# YAML frontmatter
+
+Given mkd;
+---
+a: b
+---
+
+Execute (YAML frontmatter is controlled by the option):
+ AssertNotEqual SyntaxOf('a'), 'yamlBlockMappingKey'
+ let g:vim_markdown_frontmatter=1
+ syn off | syn on
+ AssertEqual SyntaxOf('a'), 'yamlBlockMappingKey'
+ let g:vim_markdown_frontmatter=0
+ syn off | syn on
+ AssertNotEqual SyntaxOf('a'), 'yamlBlockMappingKey'
+
+Given mkd;
+
+---
+a: b
+---
+
+Execute (YAML frontmatter only works if it's the first thing in the file):
+ let g:vim_markdown_frontmatter=1
+ syn off | syn on
+ AssertNotEqual SyntaxOf('a'), 'yamlBlockMappingKey'
+
+Given mkd;
+---
+a: b
+---
+
+---
+
+Execute (rules are not mistaken by YAML frontmatter delimiters):
+ let g:vim_markdown_frontmatter=1
+ syn off | syn on
+ AssertEqual SyntaxAt(5, 1), 'mkdRule'