Add TOML/JSON front matter support

Add new options to enable front matter.
Fix #188, #242

diff --git a/Makefile b/Makefile
index 5d231146a8798d3a07f4c0fd78b969775f699611..a50adc0b9c5927025e377d1dbcbf5cdf7275327e 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -18,18 +18,22 @@ install:
        mkdir -pv ${REGISTRY}
        cp -v registry/markdown.yaml ${REGISTRY}/markdown.yaml
 
-test: build/tabular build/vader.vim
+test: build/tabular build/vim-toml build/vader.vim
        test/run-tests.sh
 .PHONY: test
 
-update: build/tabular build/vader.vim
+update: build/tabular build/vim-toml build/vader.vim
        cd build/tabular && git pull
+       cd build/vim-toml && git pull
        cd build/vader.vim && git pull
 .PHONY: update
 
 build/tabular: | build
        git clone https://github.com/godlygeek/tabular build/tabular
 
+build/vim-toml: | build
+       git clone https://github.com/cespare/vim-toml build/vim-toml
+
 build/vader.vim: | build
        git clone https://github.com/junegunn/vader.vim build/vader.vim
 

diff --git a/README.md b/README.md
index 1243577fb5dac1e7fced3787fb9589326533c9c0..60c58eca969bfd0b267f8661fb736132f751e6fe 100644 (file)
--- a/README.md
+++ b/README.md
@@ -137,14 +137,32 @@ Used as `$x^2$`, `$$x^2$$`, escapable as `\$x\$` and `\$\$x\$\$`.
 let g:vim_markdown_math = 1
 ```
 
-#### YAML frontmatter
+#### YAML Front Matter
 
-Highlight YAML frontmatter as used by Jekyll:
+Highlight YAML front matter as used by Jekyll or [Hugo](https://gohugo.io/content/front-matter/).
 
 ```vim
 let g:vim_markdown_frontmatter = 1
 ```
 
+#### TOML Front Matter
+
+Highlight TOML front matter as used by [Hugo](https://gohugo.io/content/front-matter/).
+
+TOML syntax highlight requires [vim-toml](https://github.com/cespare/vim-toml).
+
+```vim
+let g:vim_markdown_toml_frontmatter = 1
+```
+
+#### JSON Front Matter
+
+Highlight JSON front matter as used by [Hugo](https://gohugo.io/content/front-matter/).
+
+```vim
+let g:vim_markdown_json_frontmatter = 1
+```
+
 ## Mappings
 
 The following work on normal and visual modes:

diff --git a/syntax/markdown.vim b/syntax/markdown.vim
index 778e8187d7ca77e00eb1181bed2b37e2d52b81ce..05cf75106fa364daeba8d82ecedc0d030cf06864 100644 (file)
--- a/syntax/markdown.vim
+++ b/syntax/markdown.vim
@@ -110,6 +110,23 @@ syn match  mkdRule         /^\s*\*\{3,5}$/
 if get(g:, 'vim_markdown_frontmatter', 0)
   syn include @yamlTop syntax/yaml.vim
   syn region Comment matchgroup=mkdDelimiter start="\%^---$" end="^---$" contains=@yamlTop
+  unlet! b:current_syntax
+endif
+
+if get(g:, 'vim_markdown_toml_frontmatter', 0)
+  try
+    syn include @tomlTop syntax/toml.vim
+    syn region Comment matchgroup=mkdDelimiter start="\%^+++$" end="^+++$" transparent contains=@tomlTop
+    unlet! b:current_syntax
+  catch /E484/
+    syn region Comment matchgroup=mkdDelimiter start="\%^+++$" end="^+++$"
+  endtry
+endif
+
+if get(g:, 'vim_markdown_json_frontmatter', 0)
+  syn include @jsonTop syntax/json.vim
+  syn region Comment matchgroup=mkdDelimiter start="\%^{$" end="^}$" contains=@jsonTop
+  unlet! b:current_syntax
 endif
 
 if get(g:, 'vim_markdown_math', 0)

diff --git a/test/run-tests.sh b/test/run-tests.sh
index 731b3ced111f6331df20ecf9c09b32775078f168..ba00fc01fca33157f22d7579325a0be755c9e618 100755 (executable)
--- a/test/run-tests.sh
+++ b/test/run-tests.sh
@@ -5,7 +5,7 @@ set -e
 
 cd "$( dirname "${BASH_SOURCE[0]}" )"
 
-for dep in ../build/tabular ../build/vader.vim; do
+for dep in ../build/tabular ../build/vim-toml ../build/vader.vim; do
   if [[ ! -d $dep ]]; then
     echo "Missing dependency: $dep"
     echo "You may just want to use 'make test'."

diff --git a/test/syntax.vader b/test/syntax.vader
index ecf36b7de46024719f31fde91ea1958a108587bc..f2fc9367532edcc21327ccd2b7e7eb99924084cc 100644 (file)
--- a/test/syntax.vader
+++ b/test/syntax.vader
@@ -489,6 +489,65 @@ Execute (rules are not mistaken by YAML frontmatter delimiters):
   let g:vim_markdown_frontmatter=1
   syn off | syn on
   AssertEqual SyntaxAt(5, 1), 'mkdRule'
+  unlet g:vim_markdown_frontmatter
+
+# TOML frontmatter
+
+Given markdown;
++++
+a = "b"
++++
+
+Execute (TOML frontmatter is controlled by the option):
+  syn off | syn on
+  AssertNotEqual SyntaxOf('b'), 'tomlString'
+  let g:vim_markdown_toml_frontmatter=1
+  syn off | syn on
+  AssertEqual SyntaxOf('b'), 'tomlString'
+  let g:vim_markdown_toml_frontmatter=0
+  syn off | syn on
+  AssertNotEqual SyntaxOf('b'), 'tomlString'
+
+Given markdown;
+
++++
+a = "b"
++++
+
+Execute (TOML frontmatter only works if it's the first thing in the file):
+  let g:vim_markdown_toml_frontmatter=1
+  syn off | syn on
+  AssertNotEqual SyntaxOf('b'), 'tomlString'
+  unlet g:vim_markdown_toml_frontmatter
+
+# JSON frontmatter
+
+Given markdown;
+{
+  "a": "b"
+}
+
+Execute (JSON frontmatter is controlled by the option):
+  syn off | syn on
+  AssertNotEqual SyntaxOf('a'), 'jsonKeyword'
+  let g:vim_markdown_json_frontmatter=1
+  syn off | syn on
+  AssertEqual SyntaxOf('a'), 'jsonKeyword'
+  let g:vim_markdown_json_frontmatter=0
+  syn off | syn on
+  AssertNotEqual SyntaxOf('a'), 'jsonKeyword'
+
+Given markdown;
+
+{
+  "a": "b"
+}
+
+Execute (JSON frontmatter only works if it's the first thing in the file):
+  let g:vim_markdown_json_frontmatter=1
+  syn off | syn on
+  AssertNotEqual SyntaxOf('a'), 'jsonKeyword'
+  unlet g:vim_markdown_json_frontmatter
 
 # Header
 

diff --git a/test/vimrc b/test/vimrc
index 524fe6c0f101ab644f555ccd718de7638617ae36..015febfe148d22907bc17190f765933558dca613 100644 (file)
--- a/test/vimrc
+++ b/test/vimrc
@@ -1,6 +1,7 @@
 set nocompatible
 set rtp+=../
 set rtp+=../build/tabular/
+set rtp+=../build/vim-toml/
 set rtp+=../build/vader.vim/
 let $LANG='en_US'
 filetype on