wp-content/themes/twentyfourteen/functions.php:271Register three Twenty Fourteen widget areas.
function twentyfourteen_widgets_init() { require get_template_directory() . '/inc/widgets.php'; register_widget( 'Twenty_Fourteen_Ephemera_Widget' ); register_sidebar( array( 'name' => __( 'Primary Sidebar', 'twentyfourteen' ), 'id' => 'sidebar-1', 'description' => __( 'Main sidebar that appears on the left.', 'twentyfourteen' ), 'before_widget' => '<aside id="%1$s" class="widget %2$s">', 'after_widget' => '</aside>', 'before_title' => '<h1 class="widget-title">', 'after_title' => '</h1>', ) ); register_sidebar( array( 'name' => __( 'Content Sidebar', 'twentyfourteen' ), 'id' => 'sidebar-2', 'description' => __( 'Additional sidebar that appears on the right.', 'twentyfourteen' ), 'before_widget' => '<aside id="%1$s" class="widget %2$s">', 'after_widget' => '</aside>', 'before_title' => '<h1 class="widget-title">', 'after_title' => '</h1>', ) ); register_sidebar( array( 'name' => __( 'Footer Widget Area', 'twentyfourteen' ), 'id' => 'sidebar-3', 'description' => __( 'Appears in the footer section of the site.', 'twentyfourteen' ), 'before_widget' => '<aside id="%1$s" class="widget %2$s">', 'after_widget' => '</aside>', 'before_title' => '<h1 class="widget-title">', 'after_title' => '</h1>', ) );}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.