>	That would also work fine...
>	The SU_FROM avoids anything on /usr in root's dotfiles, and the
>	(insignificant) overhead of running an extra process.

um....heh.  if you can't use logname, you can't use su.  su's is
/usr/bin as well, ya know.  :)

>	There is not much to choose between them, but I'm inclined to
>	stick with SU_FROM because its already there :)

well...only because it was recently put there, no?  besides, wouldn't
using logname be much more incredibly portable?  isn't portability a
good thing?

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