Ticket #34278: 34278.2.diff

src/wp-includes/template-loader.php

@@ -39 +39 @@
 elseif ( is_trackback() ) :
         include( ABSPATH . 'wp-trackback.php' );
         return;
-elseif ( is_embed() ) :
-        $template = ABSPATH . WPINC . '/embed-template.php';
-
-        /**
-         * Filter the template used for embedded posts.
-         *
-         * @since 4.4.0
-         *
-         * @param string $template Path to the template file.
-         */
-        $template = apply_filters( 'embed_template', $template );
-
-        include ( $template );
-        return;
 endif;
 
 if ( defined('WP_USE_THEMES') && WP_USE_THEMES ) :
         $template = false;
-        if     ( is_404()            && $template = get_404_template()            ) :
+        if ( is_embed()              && $template = get_embed_template()          ) :
+        elseif ( is_404()            && $template = get_404_template()            ) :
         elseif ( is_search()         && $template = get_search_template()         ) :
         elseif ( is_front_page()     && $template = get_front_page_template()     ) :
         elseif ( is_home()           && $template = get_home_template()           ) :
@@ -78 +65 @@
         else :
                 $template = get_index_template();
         endif;
+
         /**
          * Filter the path of the current template before including it.
          *

src/wp-includes/template.php

@@ -488 +488 @@
 }
 
 /**
+ * Retrieve path of embed template in current or parent template.
+ *
+ * Checks for embed template in current template, if it exists or in the
+ * parent template.
+ *
+ * The template path is filterable via the dynamic {@see '$type_template'} hook,
+ * e.g. 'embed_template'.
+ *
+ * @since 4.4.0
+ *
+ * @see get_query_template()
+ *
+ * @return string Full path to embed template file.
+ */
+function get_embed_template() {
+        $template = get_query_template( 'embed', array( 'wp-embed.php' ) );
+
+        if ( '' === $template ) {
+                $template = ABSPATH . WPINC . '/embed-template.php';
+        }
+
+        return $template;
+}
+
+/**
  * Retrieve the name of the highest priority template file that exists.
  *
  * Searches in the STYLESHEETPATH before TEMPLATEPATH so that themes which