GNU bug report logs - #51733
27.1; Detect impossible email addresses better

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From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: 積丹尼 Dan Jacobson <jidanni <at> jidanni.org>
Cc: 51733 <at> debbugs.gnu.org
Subject: bug#51733: 27.1; Detect impossible email addresses better
Date: Wed, 10 Nov 2021 01:42:34 +0100

積丹尼 Dan Jacobson <jidanni <at> jidanni.org> writes:

> Upon sending,
> To: Bob_Norbolwits <at> GCSsafetyACE.com​
> should trigger a warning:
> "You won't get far trying to send mail with ZERO WIDTH SPACE in an address,"
> instead of blundering along and sending to "gcssafetyace.xn--com-7m0a"!!

I guess Emacs should run all email addresses through a check for
Unicode confusability and direction markers and all that stuff, too.
(Which got a lot of work lately in a display context.)

Do we have a predicate somewhere that says whether a string is suspicious
based on confusables and r2l markers and stuff?

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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