wp-content/themes/twentyfourteen/functions.php:230Adjust content_width value for image attachment template.
function twentyfourteen_content_width() { if ( is_attachment() && wp_attachment_is_image() ) { $GLOBALS['content_width'] = 810; }}Introduced in Twenty Fourteen 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/twentyfourteen/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.