bug#43175: 27.1; ISO8601 & parse-time-string check in 27.1

[Brett Gilio]

https://git.sr.ht/~brettgilio/org-webring
When using the package I have authored above, there is a dependency
on ISO-8601 for parsing ATOM time-strings in 27.1 or newer. The
condition check for iso8601 in parse-time-string exists in 28.0.50
but is non-existent in 27.1 when ISO8601 was introduced. I am requesting
that this condition check be backported to 27-next.

Thanks,
Brett Gilio

[Eli Zaretskii]

Date: Wed, 02 Sep 2020 15:17:25 -0500
https://git.sr.ht/~brettgilio/org-webring
When using the package I have authored above, there is a dependency
on ISO-8601 for parsing ATOM time-strings in 27.1 or newer. The
condition check for iso8601 in parse-time-string exists in 28.0.50
but is non-existent in 27.1 when ISO8601 was introduced. I am requesting
that this condition check be backported to 27-next.

The change you mention implemented a new feature in parse-time-string,
so I'd prefer not to backport it.

Can you tell more about the reason for your request? I don't think I
understand why the problem you have cannot be resolved for Emacs 27 by
using iso8601.el functions from your package.

Thanks.