FIX: results of Wiki#search contains files out of page_file_dir

lib/gollum/wiki.rb

@@ -246,7 +246,11 @@ module Gollum
     # Returns an Array with Objects of page name and count of matches
     def search(query)
       # See: http://github.com/Sirupsen/gollum/commit/f0a6f52bdaf6bee8253ca33bb3fceaeb27bfb87e
-      search_output = @repo.git.grep({:c => query}, 'master')
+      if @page_file_dir
+        search_output = @repo.git.grep({:c => query}, 'master', '--', @page_file_dir)
+      else
+        search_output = @repo.git.grep({:c => query}, 'master')
+      end
 
       search_output.split("\n").collect do |line|
         result = line.split(':')

test/test_wiki.rb

@@ -314,6 +314,12 @@ context "page_file_dir option" do
     assert !@wiki.page("bar")
   end
 
+  test "search results should be restricted in page filer dir" do
+    results = @wiki.search("Hello")
+    assert_equal 1, results.size
+    assert_equal "foo", results[0][:name]
+  end
+
   teardown do
     FileUtils.rm_r(@path)
   end