From e5279d47733d25f88519025ee1ece33bc725d660 Mon Sep 17 00:00:00 2001
From: Paul Robert Lloyd <me+github@paulrobertlloyd.com>
Date: Sun, 1 Nov 2015 23:04:59 +0000
Subject: [PATCH] Santize @config['highlighter'] to only allow highlighters
 supported by kramdown

---
 lib/jekyll/converters/markdown/kramdown_parser.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/jekyll/converters/markdown/kramdown_parser.rb b/lib/jekyll/converters/markdown/kramdown_parser.rb
index c9d290df..40dfa87e 100644
--- a/lib/jekyll/converters/markdown/kramdown_parser.rb
+++ b/lib/jekyll/converters/markdown/kramdown_parser.rb
@@ -5,7 +5,11 @@ module Jekyll
         def initialize(config)
           require 'kramdown'
           @config = config
-          @config['kramdown']['syntax_highlighter'] ||= @config['highlighter']
+          # If kramdown supported highlighter enabled, use that
+          highlighter = @config['highlighter']
+          if highlighter == 'rouge' || highlighter == 'coderay'
+            @config['kramdown']['syntax_highlighter'] ||= highlighter
+          end
         rescue LoadError
           STDERR.puts 'You are missing a library required for Markdown. Please run:'
           STDERR.puts '  $ [sudo] gem install kramdown'