RE: DEL key doesn't kill mouse-dragged region

[Drew Adams]

    > I have tried using Transient-Mark mode occasionally, most recently in
    > the past week.  It screws me because I use commands that operate on a
    > region, in situations where normally they would work, but the mark is
    > not active.
    
    Sounds like you need to set mark-even-if-inactive to t.
    That's also what I use.
    
Right - me too.