bug#11268: Rgrep can get out of hand, so...

[Drew Adams]

> > Binding a global key might help in this regard.  But see 
> > #5: the process associated with the current buffer could
> > be the default value, but we should provide completion
> > for all processes and let the command kill any process
> > chosen.
> 
> I could live with a command that requires interaction, but I'd then
> override it in my Emacs because when I need this feature, I'm 
> usually in a real hurry to kill it (as in "no!! I didn't mean that!!") 
> and have no time for minibuffer completion/selection.

I understand.

(Of course, you only have to hit RET to accept the default of the current
buffer's process.  Still, sometimes a keystroke matters.)