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Re: emacs-28 a866674b2a: Fix inaccuracies in "lax search" documentation

From: Eli Zaretskii
Subject: Re: emacs-28 a866674b2a: Fix inaccuracies in "lax search" documentation
Date: Tue, 26 Jul 2022 20:15:02 +0300

> From: Robert Pluim <rpluim@gmail.com>
> Cc: emacs-devel@gnu.org
> Date: Tue, 26 Jul 2022 18:54:38 +0200
>     Eli> Well, one question that it would be nice to be able to ask Emacs is
>     Eli> "show me all the characters that resemble CH", so that users could
>     Eli> decide what to add to the existing set.
> But the characters that resemble CH are already in the char-fold-table
> by default.

No, only those which we considered "safe" enough and which our
heuristic collected.  For example, ⒜ is by default not considered
resembling 'a'.

> And "chars that look like CH but arenʼt in the
> char-fold-table" is something that a human can determine, but Iʼm all
> out of ideas on how to do it in elisp.

Look for characters whose decomposition has CH anywhere in the list?

>     Eli> Another potential issue is how does one easily delete a character 
> from
>     Eli> the list, when what is known is its name or codepoint?  Using Isearch
>     Eli> with \N{...} or "C-x 8 RET" is quite advanced.
> That sounds like we need a custom custom widget. I took a quick look,
> but I didnʼt see an obvious way to have a widget which could display
> its value(s) in several different formats.

Like I said, I'm okay with status quo.


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