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

[Jim Porter]

On 1/16/2022 12:31 PM, Jim Porter wrote:
> In conclusion, I think it would make sense to do the following:
>
> * Add support for "echo -E" (no-op) and possibly ignore "echo -e".
> * Fix the bug with the source command
> * Consider whether to add support for --version to various Eshell commands.
> * Decide what, if anything, to do with some of the su/sudo options 
> listed above.

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).

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.

0001-Raise-an-error-from-eval-eval-using-options-for-unkn.patch
Description: Text document

0002-Don-t-use-eshell-eval-using-options-for-eshell-sourc.patch
Description: Text document