WordPress at a glance
action is not described

after_setup_theme action-hook . WP 3.0.0

Fires after the theme is loaded.

Usage

add_action( 'after_setup_theme', 'action_function_name_7004' );
function action_function_name_7004(){
	// action...
}

Changelog

Since 3.0.0 Introduced.

Where the hook is called

In file: /wp-settings.php
after_setup_theme
wp-settings.php 518
do_action( 'after_setup_theme' );

Where in WP core the hook is used

wp-includes/class-wp-customize-manager.php 565
add_action( 'after_setup_theme', array( $this, 'after_setup_theme' ) );
wp-includes/class-wp-customize-manager.php 585
add_action( 'after_setup_theme', array( $this, 'establish_loaded_changeset' ), 5 );
wp-includes/class-wp-customize-manager.php 593
add_action( 'after_setup_theme', array( $this, 'import_theme_starter_content' ), 100 );