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bug#20623: XML and HTML files with encoding/charset="utf-8" declaration
bug#20623: XML and HTML files with encoding/charset="utf-8" declaration loose BOM; Coding system is reset from utf-8-with-signature to utf-8 on save
Wed, 08 Aug 2018 10:45:24 -0400
Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)
> Actually there's the issue that the coding system (in Emacs sense)
> is changed, but also the fact that this change is invisible to the
> user (mainly because the BOM is usually not visible), which makes
> the issue even worse. Basically, this is invisible data corruption.
> Even though only two bytes are removed, this introduces breakage in
> other applications, and it can take much time to the user to find
> the cause.
> Emacs should not change the coding system when not needed, and when
> it needs to, it must make sure to have a confirmation from the user.
FWIW, I agree: I don't think it qualifies as Debian's definition of
"grave", but there is no doubt that it's a bug and that we should