wp-content/themes/twentyfifteen/inc/template-tags.php:246Returns the post URL.
stringOne hook fires while twentyfifteen_get_link_url() runs, in this order:
Filters the display of the permalink for the current post.
function twentyfifteen_get_link_url() { $has_url = get_url_in_content( get_the_content() ); return $has_url ? $has_url : apply_filters( 'the_permalink', get_permalink() ); }Introduced in Twenty Fifteen 1.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-content/themes/twentyfifteen/inc/template-tags.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.