On 5 Sep 2023, at 13:57, Alastair Houghton <ahoughton@apple.com> wrote:

On 10 Aug 2023, at 16:51, Rich Felker <dalias@libc.org> wrote:

On Thu, Aug 10, 2023 at 04:41:38PM +0100, Alastair Houghton wrote:

I spent some time today looking at the setlocale() problem and
thought I’d put some notes down in an email.

[snip]

At this point, it's been quite a while since I looked at the
mechanisms. If you'd like to help move this forward, rather than
starting with a patch, writing a high-level natural language
description of how you'd make the changes (in terms of musl's current
internal representation for locale state) would be the most helpful.
If I'm forgetting and there's already such a good description, just
digging it up and citing it might be fine.

I wrote something up here:

https://gist.github.com/al45tair/15c3ade52b09d0cad67074176ad43e4a

Let me know what you think; I can update the document there until we’re happy that we’ve got the right solution, then I should be able to create a patch and get the relevant permission from my employer to submit it.

Kind regards,

Alastair.