Jeremy C. Reed wrote:

> On Tue, 18 Jun 2002, Richard Grace wrote:
>>This seems to be a change in the last week or two (sorry I can't be
>>more specific) which affects the '-' option in su(1)
> 
>>I looked at the CVS repository, but there doesn't seem to be any
>>change to the su(1) code which would affect this.
> 
> Same here. I wonder why I don't see this via CVS web?

IIRc, there were some changes to getopt(3). Hmm, indeed:

basesrc/lib/libc/stdlib/getopt.c
1.23:
  According to POSIX, "-" (the string) is an exception and should not
  be parsed as option. Restore behaviour broken by previous commit.
  Mirrors second part of patch from lib/17248.
1.22:
  Fix '-' handling. POSIX only recognizes "--" as end-of-options.
  Problem noted in lib/17248 by David Laight, including a patch.
  Part of this patch was used.

-- 
arto