bug#53293: 29.0.50; [PATCH] `eshell-eval-using-options' should report error for unrecognized option, even with no :external

[Eli Zaretskii]

> From: Jim Porter <jporterbugs@gmail.com>
> Cc: 53293@debbugs.gnu.org
> Date: Wed, 19 Jan 2022 19:13:33 -0800
> 
> While it would probably make sense to wait a bit longer to see if anyone 
> has comments on my audit of the existing Eshell built-in commands, I've 
> implemented the first two points here (not "echo -e", though).

Thanks, LGTM.

> The changes to `source' and `.' might warrant a NEWS entry, since it's a 
> (small) incompatible change; however, I think it's so rare that someone 
> would call "source --help" that it might not be worth adding to NEWS. 
> I'll do whatever others think is best here, though.

I think a NEWS entry is called for, since the change in behavior is
not backward-compatible.