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bug#17130: 24.4.50; Deficient Unicode case folding
From: |
Nathan Trapuzzano |
Subject: |
bug#17130: 24.4.50; Deficient Unicode case folding |
Date: |
Sat, 29 Mar 2014 16:01:10 -0400 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux) |
Eli Zaretskii <eliz@gnu.org> writes:
>> I know. But if Emacs doesn't do Unicode folding, what is there other
>> than lower/upper variants?
>
> You can make it have whatever you like, because you can set up
> buffer-specific tables.
Makes me wonder if whoever implemented the CANONICALIZE slot had Unicode
folding in mind.
>> Finding the non-canonical variants is not something that happens (at
>> least in principle) during case-insensitive matching.
>
> The case database is not only for searching.
>
>> There is no reverse mapping when it comes to folding. There can't be,
>> since multiple characters can fold into the same character.
>
> You can use the case of the string being replaced as guidelines.
> E.g., if the replaced string was capitalized, you can capitalize the
> replacement.
I think you're still conflating case conversion and case folding. As I
said, there is no case called "fold". There's just upper, lower, and
title. And the fact that these three overlap is already a problem for
case-preserving replace. I spent most of my last email trying to
explain this.
- bug#17130: 24.4.50; Deficient Unicode case folding, (continued)
- bug#17130: 24.4.50; Deficient Unicode case folding, Nathan Trapuzzano, 2014/03/29
- bug#17130: 24.4.50; Deficient Unicode case folding, Eli Zaretskii, 2014/03/29
- bug#17130: 24.4.50; Deficient Unicode case folding, Nathan Trapuzzano, 2014/03/29
- bug#17130: 24.4.50; Deficient Unicode case folding, Eli Zaretskii, 2014/03/29
- bug#17130: 24.4.50; Deficient Unicode case folding, Nathan Trapuzzano, 2014/03/29
- bug#17130: 24.4.50; Deficient Unicode case folding, Nathan Trapuzzano, 2014/03/29
- bug#17130: 24.4.50; Deficient Unicode case folding, Eli Zaretskii, 2014/03/29
- bug#17130: 24.4.50; Deficient Unicode case folding, Nathan Trapuzzano, 2014/03/29
- bug#17130: 24.4.50; Deficient Unicode case folding, Eli Zaretskii, 2014/03/29
- bug#17130: 24.4.50; Deficient Unicode case folding, Eli Zaretskii, 2014/03/29
- bug#17130: 24.4.50; Deficient Unicode case folding,
Nathan Trapuzzano <=