Ticket #23367: 23367.8.diff

src/wp-admin/includes/misc.php

@@ -841 +841 @@
                 echo ' autocomplete="off"';
         }
 }
+add_action( 'post_edit_form_tag', 'post_form_autocomplete_off' );
 
-add_action( 'post_edit_form_tag', 'post_form_autocomplete_off' );
+/**
+ * Remove single-use URL parameters and create canonical link based on new URL.
+ *
+ * Remove specific query string parameters from a URL, create the canonical link,
+ * put it in the admin header, and change the current URL to match.
+ *
+ * @since 4.2.0
+ */
+function wp_admin_canonical_url() {
+        $removable_query_args = array(
+                'message', 'settings-updated', 'saved',
+                'update', 'updated','activated',
+                'activate', 'deactivate', 'locked',
+                'deleted', 'trashed', 'untrashed',
+                'enabled', 'disabled', 'skipped',
+        );
+
+        /**
+         * Filter the list of URL parameters to remove.
+         *
+         * @since 4.2.0
+         *
+         * @param array $removable_query_args An array of parameters to remove from the URL.
+         */
+        $removable_query_args = apply_filters( 'removable_query_args', $removable_query_args );
+
+        if ( empty( $removable_query_args ) ) {
+                return;
+        }
+
+        // Ensure we're using an absolute URL.
+        $current_url  = set_url_scheme( 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'] );
+        $filtered_url = remove_query_arg( $removable_query_args, $current_url );
+        ?>
+        <link id="wp-admin-canonical" rel="canonical" href="<?php echo esc_url( $filtered_url ); ?>" />
+        <script>
+                if ( window.history.replaceState ) {
+                        window.history.replaceState( null, null, document.getElementById( 'wp-admin-canonical' ).href );
+                }
+        </script>
+<?php
+}
+add_action( 'admin_head', 'wp_admin_canonical_url' );