From 67cf5917e04f4afeaeb9e19a6154f0318f81e577 Mon Sep 17 00:00:00 2001
From: Brett Walker <bwalker@gitlab.com>
Date: Tue, 11 Sep 2018 18:12:19 -0500
Subject: 'code_block' closer to original implementation

- utilize the 'out' method to output the 'fence_info',
  which converts to utf8
- output 'sourcepos' again
---
 lib/banzai/renderer/common_mark/html.rb        | 14 +++++---------
 spec/lib/banzai/filter/markdown_filter_spec.rb |  6 ++++++
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/lib/banzai/renderer/common_mark/html.rb b/lib/banzai/renderer/common_mark/html.rb
index 46b609c36b0..0b27316da1b 100644
--- a/lib/banzai/renderer/common_mark/html.rb
+++ b/lib/banzai/renderer/common_mark/html.rb
@@ -4,15 +4,11 @@ module Banzai
       class HTML < CommonMarker::HtmlRenderer
         def code_block(node)
           block do
-            code      = node.string_content
-            lang      = node.fence_info
-            lang_attr = lang.present? ? %Q{ lang="#{lang}"} : ''
-            result    =
-              "<pre>" \
-                "<code#{lang_attr}>#{ERB::Util.html_escape(code)}</code>" \
-              "</pre>"
-
-            out(result)
+            out("<pre#{sourcepos(node)}><code")
+            out(' lang="', node.fence_info, '"') if node.fence_info.present?
+            out('>')
+            out(escape_html(node.string_content))
+            out('</code></pre>')
           end
         end
       end
diff --git a/spec/lib/banzai/filter/markdown_filter_spec.rb b/spec/lib/banzai/filter/markdown_filter_spec.rb
index a515d07b072..5cf9e698375 100644
--- a/spec/lib/banzai/filter/markdown_filter_spec.rb
+++ b/spec/lib/banzai/filter/markdown_filter_spec.rb
@@ -40,6 +40,12 @@ describe Banzai::Filter::MarkdownFilter do
 
         expect(result).to start_with("<pre><code>")
       end
+
+      it 'works with utf8 chars in language' do
+        result = filter("```日\nsome code\n```")
+
+        expect(result).to start_with("<pre><code lang=\"日\">")
+      end
     end
 
     context 'using Redcarpet' do
-- 
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