I have begun using mutt (terminal email client) recently and I have it setup very nicely and easy to use. My only gripe is that sometimes it is difficult to tell when I transition from one thread to the next.

Is it possible to setup the bindings such that moving to the next-undeleted message would check if the next-undeleted message is in the same thread, and if that check is false it returns to the index or throws an error?

For example, I currently have

bind pager <down> next-undeleted
bind pager } next-subthread

Is there a more advanced function call that could perform this check? I haven't been able to find much on how to perform more complex function calls with such checks while checking out the manual. Any help would be appreciated.