[gentoo-portage-dev] 'emerge' request: make --tree not imply --pretend

[Dan Corson]

Even when I am running 'emerge' non-interactively, I like to have the
dependency record afforded by --tree.  Currently when updating my system
non-interactively to get this I have to do:
  (emerge -uDtv world; emerge -uDv world) &> logfile
because --tree implies --pretend.  Could this implication be dropped?
Thanks, --Dan
P.S. If this is a reasonable request, it might be reasonable for the other
options that imply --pretend that I don't use, namely --changelog and
--columns.
P.P.S. Even
  echo y | emerge -auDtv world
doesn't work because --ask wants a terminal.