Bug in isatty (all systems!)

[Larry Campbell]

>     As an aside, has anyone noticed that DEC and [name deleted] have removed the
> BUGS entries from the man pages?  I guess that they're afraid that non UN*X
> people will think that BUGS means buggy programs, not unavoidable/historical
> artifacts.

DEC didn't remove the BUGS sections, they just renamed them RESTRICTIONS.
They also added this line to EVERY man page:

	<name> is not supported by Digital Equipment Corporation.

Actually there are a few commands that they do support.  But not one
single system call is supported!  I can just hear the telephone support
people (remember, the reason you bought Ultrix instead of BSD 4.2) now...
"Oh, fork(2) doesn't work?  Too bad.  open(2)?  Sorry, not supported."