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bug#69968: Case-folding of Mathematical Alphanumeric Symbols
From: |
Eli Zaretskii |
Subject: |
bug#69968: Case-folding of Mathematical Alphanumeric Symbols |
Date: |
Mon, 25 Mar 2024 14:37:49 +0200 |
> From: Juri Linkov <juri@linkov.net>
> Cc: 69968@debbugs.gnu.org
> Date: Mon, 25 Mar 2024 09:37:10 +0200
>
> >> Ok, then it's very strange that the Unicode standard doesn't define
> >> letter-case conversions for other letters. But what can we do.
> >
> > We can define case-conversions for them if we decide to do so.
> > Moreover, Lisp programs which for some reason need that can do that
> > themselves, even if by default there are no case-conversions defined
> > for them. The question is when and why is this needed?
>
> Probably case-conversions for them could be added later only
> when there is more support for such symbols in Emacs:
> for example, after creating an input method to input them,
> or better a command that will convert the region of ASCII chars,
> etc.
I agree that case-conversions for these characters would make more
sense as part of a larger package which would allow using these
characters as letters. In any case, making a lower-case character L
and upper-case character U a case-pair is simple:
(let ((tbl (standard-case-table)))
(set-case-syntax-pair U L tbl))
The above makes the change global, but it can also be made
buffer-locally; see "Case Tables" in the ELisp manual for more
details.
I guess we can now close this bug? Or is there anything else to do
here?