From 1b4f6262cb361cffbea856a4d8a7b4666d0e5eed Mon Sep 17 00:00:00 2001
From: Nick Winter <livelily@gmail.com>
Date: Wed, 4 Nov 2015 10:46:16 -0800
Subject: [PATCH] Exclude non-selected code language documentation blocks from
 level guides

---
 app/views/play/menu/GuideView.coffee | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/app/views/play/menu/GuideView.coffee b/app/views/play/menu/GuideView.coffee
index 05c59afe3..606c586b4 100644
--- a/app/views/play/menu/GuideView.coffee
+++ b/app/views/play/menu/GuideView.coffee
@@ -41,7 +41,7 @@ module.exports = class LevelGuideView extends CocoView
     @docs = specific.concat(general)
     @docs = $.extend(true, [], @docs)
     @docs = [@docs[0]] if @firstOnly and @docs[0]
-    doc.html = marked(utils.i18n doc, 'body') for doc in @docs
+    doc.html = marked(@filterCodeLanguages(utils.i18n(doc, 'body'))) for doc in @docs
     doc.name = (utils.i18n doc, 'name') for doc in @docs
     doc.slug = _.string.slugify(doc.name) for doc in @docs
     super()
@@ -72,6 +72,12 @@ module.exports = class LevelGuideView extends CocoView
       @$el.find('.nav-tabs a').click(@clickTab)
     @playSound 'guide-open'
 
+  filterCodeLanguages: (text) ->
+    currentLanguage = me.get('aceConfig')?.language or 'python'
+    excludedLanguages = _.without ['javascript', 'python', 'coffeescript', 'clojure', 'lua', 'io'], currentLanguage
+    exclusionRegex = new RegExp "```(#{excludedLanguages.join('|')})\n[^`]+```\n?", 'gm'
+    text.replace exclusionRegex, ''
+
   clickSubscribe: (e) ->
     level = @levelSlug # Save ref to level slug
     @openModalView new SubscribeModal()