Fire action hook after updating option group.

[mdifelice]

This suggestion affects the Settings API. There are hooks that fire after updating a single option, but not when a group of options is updated. Options updated via the Settings API are handled by /wp-admin/options.php, which after updating them does a redirection to the previous page, not firing any hook beside the shutdown action hook. In fact, the shutdown hook could be used for the same purpose but it would require some more extra checks.

Basically the hook would allow to perform some action that is required after all options in that group are updated.

[mdifelice]

Possible place to add the proposed action hook.