Ticket #18302: 18302.15.diff

src/wp-includes/link-template.php

@@ -2438 +2438 @@
 }
 
 /**
+ * Retrieve the url of a file in the theme.
+ *
+ * Searches in the stylesheet directory before the template directory so themes
+ * which inherit from a parent theme can just override one file.
+ *
+ * @since 3.6.0
+ *
+ * @param string $file File to search for in the stylesheet directory.
+ * @return string The URL of the file.
+ */
+function theme_file_uri( $file = '' ) {
+        $file = ltrim( $file, '/' );
+
+        if ( empty( $file ) ) {
+                $url = get_stylesheet_directory_uri();
+        } elseif( is_child_theme() && file_exists( get_stylesheet_directory() . "/$file" ) ) {
+                $url = get_stylesheet_directory_uri() . "/$file";
+        } else {
+                $url = get_template_directory_uri() . "/$file";
+        }
+
+        return apply_filters( 'theme_url', $url, $file );
+}
+
+/**
+ * Retrieve the url of a file in the parent theme.
+ *
+ * @since 3.6.0
+ *
+ * @param string $file File to return the url for in the template directory.
+ * @return string The URL of the file.
+ */
+function parent_theme_file_uri( $file = '' ) {
+        $file = ltrim( $file, '/' );
+
+        if ( empty( $file ) ) {
+                $url = get_template_directory_uri();
+        } else {
+                $url = get_template_directory_uri() . "/$file";
+        }
+
+        return apply_filters( 'parent_theme_url', $url, $file );
+}
+/**
  * Displays the navigation to next/previous post, when applicable.
  *
  * @since 4.1.0