I tend to just exit Vim, and then hit the right key (in fact, had to do it right now :P). Never felt it's delayed me enough to see if there's an alternative approach, although I'd think at that point there's not (in relation to Mutt) as you're in an external editor with no direct tie to mutt, other than passing off the file at the completion of your composition.
-Stephen On Thu, 19 Nov 2015, Xu Wang wrote: > I often press 'r', write my message, and then realize on compose map > that I should have done 'g' for group reply. Is there a way to switch > on compose map (other than doing manually editing)? > > Kind regards, > > Xu