wp-content/themes/twentytwelve/functions.php:363Registers sidebars.
function twentytwelve_widgets_init() { register_sidebar( array( 'name' => __( 'Main Sidebar', 'twentytwelve' ), 'id' => 'sidebar-1', 'description' => __( 'Appears on posts and pages except the optional Front Page template, which has its own widgets', 'twentytwelve' ), 'before_widget' => '<aside id="%1$s" class="widget %2$s">', 'after_widget' => '</aside>', 'before_title' => '<h3 class="widget-title">', 'after_title' => '</h3>', ) ); register_sidebar( array( 'name' => __( 'First Front Page Widget Area', 'twentytwelve' ), 'id' => 'sidebar-2', 'description' => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ), 'before_widget' => '<aside id="%1$s" class="widget %2$s">', 'after_widget' => '</aside>', 'before_title' => '<h3 class="widget-title">', 'after_title' => '</h3>', ) ); register_sidebar( array( 'name' => __( 'Second Front Page Widget Area', 'twentytwelve' ), 'id' => 'sidebar-3', 'description' => __( 'Appears when using the optional Front Page template with a page set as Static Front Page', 'twentytwelve' ), 'before_widget' => '<aside id="%1$s" class="widget %2$s">', 'after_widget' => '</aside>', 'before_title' => '<h3 class="widget-title">', 'after_title' => '</h3>', ) );}Introduced in Twenty Twelve 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/twentytwelve/functions.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.