I read an interesting question about mutt on IRC some days ago, which was: how do I find out which threads I have trolled^Wtaken part in. Obviously, there’s ~P to filter the mails I have sent (which uses addresses declared through the alternates config directives to know who I am). But how do I find about the whole thread?

Easily enough, one can wrap a given search through ~(…) so that the whole threads containing the matching mails are selected. In this case: ~(~P).

Given the amount of outstanding requests on debian-release@, one can use the following to only see the threads with unread mails: ~(~N), which helps spotting the threads where attention is needed. Thinking of it, that probably should become the default when opening a given Maildir… Gotta love people with interesting questions.