>> One notable exception is the proposal calls out that /usr/gnu is a
>> fully populated - namely, even if there is no conflicting name in
>> /usr/bin, there is still a component in /usr/gnu/bin (either
>> /usr/bin/prog symlinks to /usr/gnu/bin/prog or vice-versa.) This is
>> different from /usr/xpg[46] which are sparse directories and only
>> contain conflicting components.
> I missed this.
>
> Why?
>
> (Its also different from /usr/ucb.)
Indeed it is. But it's also possible that I've misinterpreted the
proposal on this point. If you want to see the OpenSolaris discussion
regarding this, the thread which Stephen referenced in the proposal is
http://www.opensolaris.org/jive/thread.jspa?threadID=20197
and in particular,
http://www.opensolaris.org/jive/message.jspa?messageID=78579#78579
dsc