GNU bug report logs - #24405
24.5; Possibly ``forward-word`` doesn't respect ``word-combining-categories`` for word boundaries on changing between latin/phonetic scripts.

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Stefan Kangas <stefan <at> marxist.se>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#24405: closed (24.5; Possibly ``forward-word`` doesn't
 respect ``word-combining-categories`` for word boundaries on changing
 between latin/phonetic scripts.)
Date: Sun, 29 Sep 2019 04:35:02 +0000

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Your message dated Sun, 29 Sep 2019 06:33:45 +0200
with message-id <CADwFkmkPQFS_7FUemzKWEzODsvCDu25fwXEdir4kZB2NYfUBvA <at> mail.gmail.com>
and subject line Re: bug#24405: 24.5; Possibly ``forward-word`` doesn't respect ``word-combining-categories`` for word boundaries on changing between latin/phonetic scripts.
has caused the debbugs.gnu.org bug report #24405,
regarding 24.5; Possibly ``forward-word`` doesn't respect ``word-combining-categories`` for word boundaries on changing between latin/phonetic scripts.
to be marked as done.

(If you believe you have received this mail in error, please contact
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From: Oleksandr Gavenko <gavenkoa <at> gmail.com>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.5; Possibly ``forward-word`` doesn't respect
 ``word-combining-categories`` for word boundaries on changing between
 latin/phonetic scripts.
Date: Sat, 10 Sep 2016 11:33:45 +0300

Evaluate following form by C-x C-e:

  (let ((word-combining-categories '((?l . ?y) (?y . ?l) (?l . ?l)))
        (word-separating-categories nil))
    (forward-word))

  HelloПривLLжɪəʊheləʊaiɪa

My pointer stopped between ʊh.

I have:

  (aref char-script-table ?ʊ) phonetic
  (aref char-script-table ?h) latin
  (aref char-script-table ?ж) cyrillic

  (category-set-mnemonics (char-category-set ?ʊ)) ".Ljl"
  (category-set-mnemonics (char-category-set ?h)) ".Lalr"

  (category-docstring ?y) "Cyrillic"
  (category-docstring ?l) "Latin"

I expect that point moved to last character before new line.

Seems that:

  (?l . ?y) (?y . ?l)

has effect because pointer moved across Cyrillic/Latin and Cyrillic/Phonetic
scripts but refused to move through Latin/Phonetic scripts.

If it is intended behavior how will I make Emacs to move across Latin/Phonetic
scripts?

See also:

  http://emacs.stackexchange.com/questions/21131/does-word-syntax-take-script-into-account

In GNU Emacs 24.5.1 (x86_64-pc-linux-gnu, GTK+ Version 3.18.6)
 of 2016-01-22 on binet, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11803000
System Description:	Debian GNU/Linux testing (stretch)

-- 
http://defun.work/

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From: Stefan Kangas <stefan <at> marxist.se>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: 24405-done <at> debbugs.gnu.org, Oleksandr Gavenko <gavenkoa <at> gmail.com>
Subject: Re: bug#24405: 24.5; Possibly ``forward-word`` doesn't respect
 ``word-combining-categories`` for word boundaries on changing between
 latin/phonetic scripts.
Date: Sun, 29 Sep 2019 06:33:45 +0200

Eli Zaretskii <eliz <at> gnu.org> writes:

> tags 24405 + notabug
> thanks
[...]
> This is the intended behavior, yes.  The word-combining-categories
> feature is designed to support specific rare situations with mixing
> the Far Eastern scripts (e.g., use of Kanji characters in Japanese
> text), not for arbitrary games with Latin and European scripts.

This was already tagged notabug, and I can see nothing more to do here.
I'm therefore closing this now.

Best regards,
Stefan Kangas

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