wp-includes/block-template-utils.php:1590get_template_hierarchy() if ( 'index' === $slug ) { /** This filter is documented in wp-includes/template.php */ return apply_filters( 'index_template_hierarchy', array( 'index' ) ); } if ( $is_custom ) { /** This filter is documented in wp-includes/template.php */ return apply_filters( 'page_template_hierarchy', array( 'page', 'singular', 'index' ) ); } if ( 'front-page' === $slug ) { /** This filter is documented in wp-includes/template.php */ return apply_filters( 'frontpage_template_hierarchy', array( 'front-page', 'home', 'index' ) ); }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.