From 5ff1c4b700c0043351668b0d618f3f69d9196df6 Mon Sep 17 00:00:00 2001
From: Nick Winter <livelily@gmail.com>
Date: Tue, 31 May 2016 10:48:16 -0700
Subject: [PATCH] Fix #3427: allow language-specific images in Markdown
 articles

---
 app/core/utils.coffee | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/app/core/utils.coffee b/app/core/utils.coffee
index 72b007db3..afef39637 100644
--- a/app/core/utils.coffee
+++ b/app/core/utils.coffee
@@ -259,8 +259,11 @@ module.exports.filterMarkdownCodeLanguages = (text, language) ->
   return '' unless text
   currentLanguage = language or me.get('aceConfig')?.language or 'python'
   excludedLanguages = _.without ['javascript', 'python', 'coffeescript', 'clojure', 'lua', 'java', 'io'], currentLanguage
-  exclusionRegex = new RegExp "```(#{excludedLanguages.join('|')})\n[^`]+```\n?", 'gm'
-  text.replace exclusionRegex, ''
+  # Exclude language-specific code blocks like ```python (... code ...)``` for each non-target language.
+  codeBlockExclusionRegex = new RegExp "```(#{excludedLanguages.join('|')})\n[^`]+```\n?", 'gm'
+  # Exclude language-specific images like ![python - image description](image url) for each non-target language.
+  imageExclusionRegex = new RegExp "!\\[(#{excludedLanguages.join('|')}) - .+?\\]\\(.+?\\)\n?", 'gm'
+  return text.replace(codeBlockExclusionRegex, '').replace(imageExclusionRegex, '')
 
 module.exports.aceEditModes = aceEditModes =
   'javascript': 'ace/mode/javascript'