bug#71669: 30.0.50; macOS: `emacs --geometry` flag broken, only `-geometry` works

[Stefan Kangas]

Po Lu <luangruo@yahoo.com> writes:

> Where is it documented that `--geometry' should be supported on all
> systems?

1. man emacs
2. (info "(emacs) Window Size X")

> Different windowing systems are each host to unique
> conventions that our command-line options are supposed to observe, and
> this item's being visibly excluded from list of such options for NS
> systems suggests that its omission is no accident.

As I explained, it works when I say `-geometry` (one dash), so this
feature is already there.  The only issue is that `--geometry` (two
dashes) doesn't work.