bug#72442: 31.0.50; Gnus or message.el doesn't handle international message reply subject prefixes and insults users

["Björn Bidar via Bug reports for GNU Emacs, the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>]

Eli Zaretskii <eliz@gnu.org> writes:

>> Date: Sat, 03 Aug 2024 16:14:39 +0300
>> From:  Björn Bidar via "Bug reports for GNU Emacs,
>>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
>> 
>> 
>> Gnus doesn't handle international message reply prefixes as opposed
>> to Re: or it's variants.
>> 
>> An example would be `gnus-simpliy-subject-re' which threats English
>> subject prefixes.
>> 
>> Message.el doesn't do so either (by default) I don't think it makes
>> sense to open a separate bug about this but please reply that should be
>> done.
>> 
>> The message manual also judges users for using localized variants of
>> "Re: " by calling them "nincompoops" for using these "abominations"
>> which it says are "meaningless and evil".
>> 
>> The offending text can be found in the documentation for
>> `message-subject-re-regexp' in the chapter "3.1 Message Headers".
>
> FWIW, Rmail does support the various ways of saying "Re:", so the code
> could be lifted from there.

Would it make sense to move regexp and intermittent variable to
message.el or mail-utils.el?

I would assume the latter.