Quoting Philippe LeCavalier (2012-03-06 16:00:16)
>How would I add a reply key binding to reply directly from the search
>mode. ie something like R. Forward and editnew would be nice as well.

This could indeed be useful, but I'm not convinced this is a great idea in general:
What would that command do if your selection is a thread with multiple leaf-mails?
reply to the first? ask the user?

cheers,
/p