wp-includes/pomo/mo.php:88$entryTranslation_Entrybool public function is_entry_good_for_export( $entry ) { if ( empty( $entry->translations ) ) { return false; } if ( ! array_filter( $entry->translations ) ) { return false; } return true; }Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/pomo/mo.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.