wp-includes/link-template.php:1020Retrieves the permalink for a tag feed.
$tagint|WP_Term|object$feedstringoptional''stringfunction get_tag_feed_link( $tag, $feed = '' ) { return get_term_feed_link( $tag, 'post_tag', $feed );}Introduced in 2.3.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/link-template.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.