wp-includes/post-template.php:1614Displays an attachment page link using an image or icon.
$postint|WP_Postoptional0$fullsizebooloptionalfalse$deprecatedbooloptionalfalse$permalinkbooloptionalfalsefunction the_attachment_link( $post = 0, $fullsize = false, $deprecated = false, $permalink = false ) { if ( ! empty( $deprecated ) ) { _deprecated_argument( __FUNCTION__, '2.5.0' ); } if ( $fullsize ) { echo wp_get_attachment_link( $post, 'full', $permalink ); } else { echo wp_get_attachment_link( $post, 'thumbnail', $permalink ); }}Introduced in 2.0.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/post-template.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.