GNU sed version 2.05 is broken?

Here's how the old sed on my NeXT machine behaves:

bash-2.00$ sed 's/2/too/'
2 2 solid flesh^D

too 2 solid flesh


GNU sed 2.05 does exactly this too.

But when you go global they behave differently. My old NeXT sed:

bash-2.00$ sed -g 's/2/too/'
2 2 solid flesh^D

too too solid flesh

Here's GNU sed's variant on the above:

[root(_at_)ls550 bidmead]# sed -g 's/2/too/'
sed: illegal option -- g
Usage: sed [-nV] [--quiet] [--silent] [--version] [-e script]
        [-f script-file] [--expression=script] [--file=script-file] [file...]

...in other words, collapse of stout party.  Doesn't understand -g,  
misinterpets it as -- g and calls it an "illegal option".  Yet the GNU  
man page say it does understand -g (and I should hope it would...).

Is GNU sed brain-damaged, or am I?  Polite answers of all kinds  
gratefully received.

el bid