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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Message #16 received at 24405 <at> debbugs.gnu.org (full text, mbox):

From: Eli Zaretskii <eliz <at> gnu.org>
To: Oleksandr Gavenko <gavenkoa <at> gmail.com>
Cc: 24405 <at> debbugs.gnu.org
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: Sat, 10 Sep 2016 20:23:25 +0300

> From: Oleksandr Gavenko <gavenkoa <at> gmail.com>
> Cc: 24405 <at> debbugs.gnu.org
> Date: Sat, 10 Sep 2016 20:12:57 +0300
> 
> As a workaround should I modify char-script-table?

I'd suggest to write your own word-motion commands.  It's not
complicated, you can use regular expressions (which understand
categories, if you need that).

> Another solution is to invent own:
> 
>   (define-category ?p "Phonetic")
> 
> and to add it to IPA characters:
> 
>   (mapc (lambda (ch) (modify-category-entry ch "p"))
>         '(?ʌ ?ə ?ɜ ?ɒ ?ɛ ?θ ?ʊ ?ɪ ?ɔ ?ɑ ?ʃ ?ʧ ?ː ?ˈ ?ˌ ?ʒ ?ŋ))
> 
> so it becomes possible to use:
> 
>   (add-to-list 'word-combining-categories '(?p . ?l))
>   (add-to-list 'word-combining-categories '(?l . ?p))

That'd be my second best advice.  But I think regular expressions
should provide a better and easier solution.

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