wp-includes/theme.php:3877Makes sure that auto-draft posts get their post_date bumped or status changed to draft to prevent premature garbage-collection.
$new_statusstring$old_statusstring$postWP_Postfunction _wp_keep_alive_customize_changeset_dependent_auto_drafts( $new_status, $old_status, $post ) { global $wpdb; unset( $old_status ); // Short-circuit if not a changeset or if the changeset was published. if ( 'customize_changeset' !== $post->post_type || 'publish' === $new_status ) { return; } $data = json_decode( $post->post_content, true ); if ( empty( $data['nav_menus_created_posts']['value'] ) ) { return; } /* * Actually, in lieu of keeping alive, trash any customization drafts here if the changeset itself is * getting trashed. This is needed because when a changeset transitions to a draft, then any of the * dependent auto-draft post/page stubs will also get transitioned to customization drafts which * are then visible in the WP Admin. We cannot wait for the deletion of the changeset in which * _wp_delete_customize_changeset_dependent_auto_drafts() will be called, since they need to be * trashed to remove from visibility immediately. */ if ( 'trash' === $new_status ) { foreach ( $data['nav_menus_created_posts']['value'] as $post_id ) { if ( ! empty( $post_id ) && 'draft' === get_post_status( $post_id ) ) { wp_trash_post( $post_id ); } } return; } $post_args = array(); if ( 'auto-draft' === $new_status ) { /* * Keep the post date for the post matching the changeset * so that it will not be garbage-collected before the changeset. */ $post_args['post_date'] = $post->post_date; // Note wp_delete_auto_drafts() only looks at this date. } else { /* * Since the changeset no longer has an auto-draft (and it is not published) * it is now a persistent changeset, a long-lived draft, and so any * associated auto-draft posts should likewise transition into having a draft * status. These drafts will be treated differently than regular drafts in * that they will be tied to the given changeset. The publish meta box is * replaced with a notice about how the post is part of a set of customized changes * which will be published when the changeset is published. */ $post_args['post_status'] = 'draft'; } foreach ( $data['nav_menus_created_posts']['value'] as $post_id ) { if ( empty( $post_id ) || 'auto-draft' !== get_post_status( $post_id ) ) { continue; } $wpdb->update( $wpdb->posts, $post_args, array( 'ID' => $post_id ) ); clean_post_cache( $post_id ); }}Introduced in 4.8.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/theme.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.