From 8f0d87271de5f99bac7078ebcd123c66a4e31dbb Mon Sep 17 00:00:00 2001
From: Hiroshi Shirosaki <h.shirosaki@gmail.com>
Date: Fri, 22 Jan 2016 09:28:22 +0900
Subject: [PATCH] Add requirement of json syntax

Ubuntu vim package does not have json syntax.
---
 Makefile            |  8 ++++++--
 README.md           |  2 ++
 syntax/markdown.vim | 10 +++++++---
 test/run-tests.sh   |  2 +-
 test/vimrc          |  1 +
 5 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/Makefile b/Makefile
index a50adc0..231c0af 100644
--- a/Makefile
+++ b/Makefile
@@ -18,13 +18,14 @@ install:
 	mkdir -pv ${REGISTRY}
 	cp -v registry/markdown.yaml ${REGISTRY}/markdown.yaml
 
-test: build/tabular build/vim-toml build/vader.vim
+test: build/tabular build/vim-toml build/vim-json build/vader.vim
 	test/run-tests.sh
 .PHONY: test
 
-update: build/tabular build/vim-toml build/vader.vim
+update: build/tabular build/vim-toml build/vim-json build/vader.vim
 	cd build/tabular && git pull
 	cd build/vim-toml && git pull
+	cd build/vim-json && git pull
 	cd build/vader.vim && git pull
 .PHONY: update
 
@@ -34,6 +35,9 @@ build/tabular: | build
 build/vim-toml: | build
 	git clone https://github.com/cespare/vim-toml build/vim-toml
 
+build/vim-json: | build
+	git clone https://github.com/elzr/vim-json build/vim-json
+
 build/vader.vim: | build
 	git clone https://github.com/junegunn/vader.vim build/vader.vim
 
diff --git a/README.md b/README.md
index 60c58ec..6780572 100644
--- a/README.md
+++ b/README.md
@@ -159,6 +159,8 @@ let g:vim_markdown_toml_frontmatter = 1
 
 Highlight JSON front matter as used by [Hugo](https://gohugo.io/content/front-matter/).
 
+JSON syntax highlight requires [vim-json](https://github.com/elzr/vim-json).
+
 ```vim
 let g:vim_markdown_json_frontmatter = 1
 ```
diff --git a/syntax/markdown.vim b/syntax/markdown.vim
index 05cf751..186216e 100644
--- a/syntax/markdown.vim
+++ b/syntax/markdown.vim
@@ -124,9 +124,13 @@ if get(g:, 'vim_markdown_toml_frontmatter', 0)
 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
+  try
+    syn include @jsonTop syntax/json.vim
+    syn region Comment matchgroup=mkdDelimiter start="\%^{$" end="^}$" contains=@jsonTop
+    unlet! b:current_syntax
+  catch /E484/
+    syn region Comment matchgroup=mkdDelimiter start="\%^{$" end="^}$"
+  endtry
 endif
 
 if get(g:, 'vim_markdown_math', 0)
diff --git a/test/run-tests.sh b/test/run-tests.sh
index ba00fc0..5c9db06 100755
--- 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/vim-toml ../build/vader.vim; do
+for dep in ../build/tabular ../build/vim-toml ../build/vim-json ../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/vimrc b/test/vimrc
index 015febf..463cbd8 100644
--- a/test/vimrc
+++ b/test/vimrc
@@ -2,6 +2,7 @@ set nocompatible
 set rtp+=../
 set rtp+=../build/tabular/
 set rtp+=../build/vim-toml/
+set rtp+=../build/vim-json/
 set rtp+=../build/vader.vim/
 let $LANG='en_US'
 filetype on
-- 
2.39.5