Ticket #31702: 31702-opt-1.diff

wp-includes/ms-settings.php

@@ -109 +109 @@
                 $current_site = wp_get_network( $current_blog->site_id );
         }
 
+        /**
+         * Fires after the domain lookup process.
+         *
+         * This is a good time to hook in and set a default `$current_site` global
+         * if one hasn't been determined, or to do any custom lookup handling.
+         *
+         * @param string $domain The domain used during the lookup process.
+         * @param string $path   The path used during the lookup process.
+         */
+        do_action( 'ms_site_lookup', $domain, $path );
+
         // No network has been found, bail.
         if ( empty( $current_site ) ) {
                 ms_not_installed();