wp-includes/ID3/module.tag.id3v1.php:149$strstringstring public static function cutfield($str) { return trim(substr($str, 0, strcspn($str, "\x00"))); }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/ID3/module.tag.id3v1.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.