Introduce is_rtl(). Use it in core. It only becomes defined when locale is loaded, so it's impossible to use it too early. Deprecate the get_bloginfo('text_direction') call. fixes #13206.

git-svn-id: https://develop.svn.wordpress.org/trunk@14360 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/locale.php

@@ -326,6 +326,26 @@ class WP_Locale {
 		$this->init();
 		$this->register_globals();
 	}
+	/**
+	 * Checks if current locale is RTL.
+	 *
+	 * @since 3.0.0
+	 * @return bool Whether locale is RTL.
+	 */
+	 function is_rtl() {
+	 	return 'rtl' == $this->text_direction;
+	 }
+}
+
+/**
+ * Checks if current locale is RTL.
+ *
+ * @since 3.0.0
+ * @return bool Whether locale is RTL.
+ */
+function is_rtl() {
+	global $wp_locale;
+	return $wp_locale->is_rtl();
 }
 
 ?>