WordPress at a glance
filter is not described

user_admin_url filter-hook . WP 3.1.0

Filters the user admin URL for the current user.

Usage

add_filter( 'user_admin_url', 'filter_function_name_8804', 10, 2 );
function filter_function_name_8804( $url, $path ){
	// filter...

	return $url;
}
$url(string)
The complete URL including scheme and path.
$path(string)
Path relative to the URL. Blank string if no path is specified.

Where the hook is called

user_admin_url()
wp-includes/link-template.php 3334
return apply_filters( 'user_admin_url', $url, $path );

Where the hook is used (in WP core)

Does not used.