On 2024-08-12 04:42, Eli Zaretskii wrote:
> Paul, any suggestions?  And can we please document the missing
> time-zone assumptions?

Not sure what documentation is missing, but I went through the doc for 
parse-time-string and iso8601-parse and found some room for improvement 
and so installed the attached.

As for the original issue, I tend to agree with Ulrich that date-to-time 
should default to local time. This would need changes to both 
documentation and to code. Ulrich mentioned the following potential 
issue with this idea:

> The problem is that
> timezone-make-date-arpa-standard would need an explicit timezone as its
> second argument, which we don't know.

The code could use timezone-time-zone-from-absolute to infer a timezone. 
timezone-fix-time already does this sort of thing. Admittedly getting 
the details right could be a bit tricky, and there is no perfect 
solution in this area (certainly timezone-fix-time is flawed). It might 
be good enough, though.