wp-includes/class-wp-query.php:4296Determines whether the current URL is within the comments popup window.
false public function is_comments_popup() { _deprecated_function( __FUNCTION__, '4.5.0' ); return false; }Introduced in 3.1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-includes/class-wp-query.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.