From 228d89649aa85f17b3e5844d526bfc390cec0780 Mon Sep 17 00:00:00 2001
From: Brandon Keepers <brandon@opensoul.org>
Date: Fri, 7 Nov 2014 10:27:07 -0500
Subject: [PATCH] Add Language.find_by_extension

---
 lib/linguist/language.rb | 18 +++++++++++++++---
 1 file changed, 15 insertions(+), 3 deletions(-)

diff --git a/lib/linguist/language.rb b/lib/linguist/language.rb
index 49c4a6be..579288eb 100644
--- a/lib/linguist/language.rb
+++ b/lib/linguist/language.rb
@@ -194,9 +194,21 @@ module Linguist
     def self.find_by_filename(filename)
       basename = File.basename(filename)
       extname = FileBlob.new(filename).extension
-      langs = @filename_index[basename] +
-              @extension_index[extname]
-      langs.compact.uniq
+      (@filename_index[basename] + find_by_extension(extname)).compact.uniq
+    end
+
+    # Public: Look up Languages by file extension.
+    #
+    # extname - The extension String.
+    #
+    # Examples
+    #
+    #   Language.find_by_extension('rb')
+    #   # => [#<Language name="Ruby">]
+    #
+    # Returns all matching Languages or [] if none were found.
+    def self.find_by_extension(extname)
+      @extension_index[extname]
     end
 
     # Public: Look up Languages by shebang line.