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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug preprocessor/104030] [12 Regression] -Wbidi-chars should not
 warn about UCNs
Date: Fri, 14 Jan 2022 15:05:53 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104030

--- Comment #4 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #2)
> Either we drop the UCN support altogether, or make -Wbidi-chars a 2 level
> warning, -Wbidi-chars mapping to -Wbidi-chars=3D1 which doesn't warn about
> UCNs and
> -Wbidi-chars=3D2 that does.

Exactly.  Except I'm not sure how well that will play with the rest of the
-Wbidi-chars=3D suboptions.  :/

Like,

-Wbidi-chars=3Dany -Wbidi-chars=3D2

should probably warn about any bidi chars, including UCNs, but the latter
option might cause it to be just -Wbidi-chars=3Dunpaired, but warn about UC=
Ns.=