Re: [PATCH] add compiled regexp primitive lisp object

[Danny McClanahan <dmcc2@hypnicjerk.ai>]

This is a quick response to some technical points raised by Eli.

> On Tuesday, August 6th, 2024 at 11:57, Eli Zaretskii <eliz@gnu.org> wrote:
>
> Are you aware that in Emacs case-conversion uses the buffer-local
> case-tables if they are defined?  This means that the case-table in
> effect when the regex was compiled and when it is executed could be
> different, and your character set trick will not do what the user
> expects.

Ah, I hadn't considered that (thanks!). I do not immediately see how to emulate
this with the character set trick and will think more on this.

> I don't understand this part at all.  As long as you are dealing with
> Emacs buffers and strings, there's only one "encoding": the internal
> multibyte representation of characters Emacs uses.  It is a superset
> of UTF-8, and you need never care about anything else.  (Well, there's
> unibyte strings, but that can be addressed later.)

Yes, I was deeply mistaken here and failed to realize that decoding to multibyte
occurs long before any regexp matching occurs. This idea can be discarded.

Thanks,
Danny