wp-includes/ID3/module.tag.id3v2.php:2231$indexintstring public function LookupExtendedHeaderRestrictionsTextEncodings($index) { static $LookupExtendedHeaderRestrictionsTextEncodings = array( 0x00 => 'No restrictions', 0x01 => 'Strings are only encoded with ISO-8859-1 or UTF-8', ); return (isset($LookupExtendedHeaderRestrictionsTextEncodings[$index]) ? $LookupExtendedHeaderRestrictionsTextEncodings[$index] : ''); }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.id3v2.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.