wp-includes/ID3/module.audio-video.flv.php:541string public function peekUTF() { $pos = $this->pos; $val = $this->readUTF(); $this->pos = $pos; return $val; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/ID3/module.audio-video.flv.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.