From 183a6d8e8b72c5226418b42914f19341570fd49c Mon Sep 17 00:00:00 2001
From: Kevin Sawicki <kevin@github.com>
Date: Mon, 31 Dec 2012 13:49:04 -0800
Subject: [PATCH] Add helper for markdown extension to fs

---
 .../markdown-preview/src/markdown-preview.coffee         | 3 +--
 src/stdlib/fs.coffee                                     | 9 +++++++++
 2 files changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/packages/markdown-preview/src/markdown-preview.coffee b/src/packages/markdown-preview/src/markdown-preview.coffee
index 7c6a6e965..dd0e6e19d 100644
--- a/src/packages/markdown-preview/src/markdown-preview.coffee
+++ b/src/packages/markdown-preview/src/markdown-preview.coffee
@@ -70,5 +70,4 @@ class MarkdownPreview extends ScrollView
     @markdownBody.show()
 
   isMarkdownFile: (path) ->
-    extension = fs.extension(path)
-    extension is '.md' or extension is '.markdown'
+    fs.isMarkdownExtension(fs.extension(path))
diff --git a/src/stdlib/fs.coffee b/src/stdlib/fs.coffee
index b4470d916..a58aa499c 100644
--- a/src/stdlib/fs.coffee
+++ b/src/stdlib/fs.coffee
@@ -151,3 +151,12 @@ module.exports =
     _.contains([
       '.pdf'
     ], ext)
+
+  isMarkdownExtension: (ext) ->
+    _.contains([
+      '.markdown'
+      '.md'
+      '.mkd'
+      '.mkdown'
+      '.ron'
+    ], ext)