[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM
From: |
Eli Zaretskii |
Subject: |
bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM |
Date: |
Sat, 02 Jul 2022 19:37:07 +0300 |
> From: Lars Ingebrigtsen <larsi@gnus.org>
> Cc: Glenn Morris <rgm@gnu.org>, schwab@linux-m68k.org, 48324@debbugs.gnu.org
> Date: Sat, 02 Jul 2022 18:14:39 +0200
>
> Eli Zaretskii <eliz@gnu.org> writes:
>
> > This actually reveals a design flaw in string-limit: we cannot simply
> > use encode-coding-char to encode the characters one by one. I added a
> > FIXME comment to explain why, as I don't currently have any clever
> > ideas for how to implement it more correctly, except by iterations,
> > which is inelegant. Ideas welcome.
>
> Hm... do we have some way of knowing that the coding system we're using
> is one that should have a BOM? And a function to remove the BOM?
The problem is not just with BOM. The problem will happen with any
coding-system that produces prefix and/or suffix bytes when it encodes
strings. The FIXME I added mentions ISO-2022 7-bit encodings as
another example.
And then there are coding-system's with pre-write-conversion, and
those can produce any additions they like.
> If we had both, then we could strip the BOM from the individual chars,
> and add one to the front.
AFAIR, what we have now already handles BOM in coding-system's that
are known to produce a BOM. See encode-coding-char.
- bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM, Lars Ingebrigtsen, 2022/07/02
- bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM,
Eli Zaretskii <=
- bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM, Lars Ingebrigtsen, 2022/07/03
- bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM, Lars Ingebrigtsen, 2022/07/03
- bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM, Eli Zaretskii, 2022/07/03
- bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM, Eli Zaretskii, 2022/07/03
- bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM, Andreas Schwab, 2022/07/03
- bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM, Eli Zaretskii, 2022/07/03
- bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM, Lars Ingebrigtsen, 2022/07/04
- bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM, Eli Zaretskii, 2022/07/04
- bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM, Lars Ingebrigtsen, 2022/07/05
- bug#48324: 27.2; hexl-mode duplicates the UTF-8 BOM, Lars Ingebrigtsen, 2022/07/03