bug#66902: 30.0.50; Recognize env -S/--split-string in shebangs

["Kévin Le Gouguec" <kevin.legouguec@gmail.com>]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Kévin Le Gouguec <kevin.legouguec@gmail.com>
>> Date: Sun, 12 Nov 2023 18:53:40 +0100
>> 
>> > 3. Assuming we do want to amend that regexp, would it be possible to use
>> > rx here?  OT1H guessing "no" because files.el is pre-reloaded, whereas
>> > rx.el is not; OTOH I see that files.el requires easy-mmode at
>> > compile-time, and that package does not show up in loadup.el, so…
>> > settling for "maybe?"
>> 
>> Figured rx was similar to pcase in that regard:
>> 
>> * They need to be required explicitly despite their macros being
>>   "autoloaded", because files.el is loaded during bootstrap before
>>   autoloading is set up.
>> 
>> * Somehow that does not cause them to be preloaded?  At least going by
>>   emacs -Q,
>>   * featurep returns nil,
>>   * preloaded-file-list does not include them.
>
> I'd prefer not to have rx required in files.el, so could you please
> rewrite those parts of your patch and resubmit?  Also, please add a
> NEWS entry about the change.  

ACK; will get to it in the coming days.

>                               I think otherwise your patch is ready to
> go in.
>
> Thanks.

Thank you for the review!