From c7e4d07d28307ab06c839a6329f3d787aa152b5c Mon Sep 17 00:00:00 2001
From: Peter Westwood <westi@git.wordpress.org>
Date: Mon, 3 May 2010 20:56:57 +0000
Subject: [PATCH] Add is_child_theme(). Fixes #12998 props ptahdunbar.

git-svn-id: https://develop.svn.wordpress.org/trunk@14409 602fd350-edb4-49c9-b593-d223f7449a82
---
 wp-includes/theme.php | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/wp-includes/theme.php b/wp-includes/theme.php
index 877e7c7658..c58a9f51c9 100644
--- a/wp-includes/theme.php
+++ b/wp-includes/theme.php
@@ -6,6 +6,17 @@
  * @subpackage Template
  */
 
+/**
+ * Whether a child theme is in use.
+ *
+ * @since 3.0.0
+ *
+ * @return bool true if a child theme is in use, false otherwise.
+ **/
+function is_child_theme() {
+	return ( TEMPLATEPATH !== STYLESHEETPATH );
+}
+
 /**
  * Retrieve name of the current stylesheet.
  *