From 18d33b1fd608e95dce8c162ce74080d368d4cb51 Mon Sep 17 00:00:00 2001
From: Pat Hawks <pat@pathawks.com>
Date: Tue, 2 Oct 2018 03:07:08 -0500
Subject: [PATCH] Cache converted markdown (#7159)

Merge pull request 7159
---
 lib/jekyll/converters/markdown.rb | 6 +++++-
 test/test_kramdown.rb             | 3 ++-
 2 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/lib/jekyll/converters/markdown.rb b/lib/jekyll/converters/markdown.rb
index 721bea64..284318cb 100644
--- a/lib/jekyll/converters/markdown.rb
+++ b/lib/jekyll/converters/markdown.rb
@@ -22,6 +22,8 @@ module Jekyll
           raise Errors::FatalException, "Bailing out; invalid Markdown processor."
         end
 
+        @cache = Jekyll::Cache.new("Jekyll::Converters::Markdown")
+
         @setup = true
       end
 
@@ -89,7 +91,9 @@ module Jekyll
       # Returns a String of the converted content.
       def convert(content)
         setup
-        @parser.convert(content)
+        @cache.getset(content) do
+          @parser.convert(content)
+        end
       end
 
       private
diff --git a/test/test_kramdown.rb b/test/test_kramdown.rb
index 94d6a4df..b55180b6 100644
--- a/test/test_kramdown.rb
+++ b/test/test_kramdown.rb
@@ -32,6 +32,7 @@ class TestKramdown < JekyllUnitTest
       @config = Jekyll.configuration(@config)
       @markdown = Converters::Markdown.new(@config)
       @markdown.setup
+      Jekyll::Cache.clear
     end
 
     should "fill symbolized keys into config for compatibility with kramdown" do
@@ -94,7 +95,7 @@ class TestKramdown < JekyllUnitTest
       MARKDOWN
       div_highlight = ">div.highlight"
       selector = "div.highlighter-rouge#{div_highlight}>pre.highlight>code"
-      refute result.css(selector).empty?
+      refute(result.css(selector).empty?, result.to_html)
     end
 
     context "when a custom highlighter is chosen" do