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From: Eli Zaretskii <eliz@gnu.org>
To: frederik.fouvry@acrolinx.com
Cc: 55256@debbugs.gnu.org
Subject: bug#55256: 27.1; Unicode noncharacters may change writing direction
Date: Wed, 04 May 2022 11:17:38 +0300	[thread overview]
Message-ID: <835yml4spp.fsf@gnu.org> (raw)
In-Reply-To: <875ymlepz6.fsf@acrolinx.com> (bug-gnu-emacs@gnu.org)

> Date: Wed, 04 May 2022 09:06:37 +0200
> From: frederik.fouvry--- via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> 
> M-x set-input-method RET
> ucs RET
> jufdd0$1 RET
> 
> If you type C-a and then step through the characters with the right
> arrow, the direction is reversed. It seems like the entry of $ followed
> by something else is triggering it, but that may just be an
> impression/side effect.
> 
> I suspect that the reason is that most Unicode noncharacters
> (https://www.unicode.org/faq/private_use.html#nonchar1) are in an Arabic
> block (https://www.unicode.org/faq/private_use.html#nonchar4b) and that
> the cause is an incorrect generalisation of the properties of the
> characters in this block.

Correct.  We failed to be in sync with the Unicode Standard in this
regard.  Should be fixed now on the master branch.

Thanks.





      parent reply	other threads:[~2022-05-04  8:17 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-05-04  7:06 bug#55256: 27.1; Unicode noncharacters may change writing direction frederik.fouvry--- via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-05-04  7:20 ` bug#55256: Writing direction frederik.fouvry--- via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-05-04  8:24   ` Eli Zaretskii
2022-05-04  9:02     ` Frederik Fouvry via Bug reports for GNU Emacs, the Swiss army knife of text editors
2022-06-02 13:09       ` bug#55256: 27.1; Unicode noncharacters may change writing direction Lars Ingebrigtsen
2022-05-04  8:17 ` Eli Zaretskii [this message]

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