Set WP Login Url To Charitable Login Page

/**

 * Always use the Charitable login page as the login.

 *

 * @param string $login_url    The login URL. Not HTML-encoded.

 * @param string $redirect     The path to redirect to on login, if supplied.

 * @param bool   $force_reauth Whether to force reauthorization, even if a cookie is present.

 */

function ed_charitable_set_login_page_as_login_url( $login_url ) {

	$page = charitable_get_option( 'login_page', 'wp' );

	if ( 'wp' !== $page ) {

		$login_url = add_query_arg( array(

			'redirect'     => $redirect,

			'force_reauth' => $force_reauth,

		), get_permalink( $page ) );

	}

	return $login_url;

}

add_filter( 'login_url', 'ed_charitable_set_login_page_as_login_url' );