From 138e26b1fad6730aa048b8cc91f92a597e323162 Mon Sep 17 00:00:00 2001
From: Phil Hughes <me@iamphill.com>
Date: Tue, 4 Oct 2016 14:06:44 +0100
Subject: Adds v-pre to code blocks in comments

Closes #22911
---
 lib/banzai/filter/sanitization_filter.rb     | 2 +-
 lib/banzai/filter/syntax_highlight_filter.rb | 3 ++-
 2 files changed, 3 insertions(+), 2 deletions(-)

(limited to 'lib/banzai')

diff --git a/lib/banzai/filter/sanitization_filter.rb b/lib/banzai/filter/sanitization_filter.rb
index 2470362e019..af1e575fc89 100644
--- a/lib/banzai/filter/sanitization_filter.rb
+++ b/lib/banzai/filter/sanitization_filter.rb
@@ -25,7 +25,7 @@ module Banzai
         return if customized?(whitelist[:transformers])
 
         # Allow code highlighting
-        whitelist[:attributes]['pre'] = %w(class)
+        whitelist[:attributes]['pre'] = %w(class v-pre)
         whitelist[:attributes]['span'] = %w(class)
 
         # Allow table alignment
diff --git a/lib/banzai/filter/syntax_highlight_filter.rb b/lib/banzai/filter/syntax_highlight_filter.rb
index fcdb496aed2..bb6b4582e4f 100644
--- a/lib/banzai/filter/syntax_highlight_filter.rb
+++ b/lib/banzai/filter/syntax_highlight_filter.rb
@@ -30,7 +30,8 @@ module Banzai
           # users can still access an issue/comment/etc.
         end
 
-        highlighted = %(<pre class="#{css_classes}"><code>#{code}</code></pre>)
+        highlighted = %(<pre class="#{css_classes}" v-pre="true"><code>#{code}</code></pre>)
+        puts highlighted
 
         # Extracted to a method to measure it
         replace_parent_pre_element(node, highlighted)
-- 
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