wp-content/themes/twentytwelve/inc/custom-header.php:55Load our special font CSS file.
function twentytwelve_custom_header_fonts() { $font_url = twentytwelve_get_font_url(); if ( ! empty( $font_url ) ) { wp_enqueue_style( 'twentytwelve-fonts', esc_url_raw( $font_url ), array(), null ); }}Introduced in Twenty Twelve 1.2. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-content/themes/twentytwelve/inc/custom-header.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.