From: Eli Zaretskii <eliz@gnu.org>
To: "Mark Shoulson" <mark@nagas.meson.org>
Cc: 29871@debbugs.gnu.org
Subject: bug#29871: 25.3; ZWJ word-boundaries in regexps
Date: Wed, 27 Dec 2017 22:33:22 +0200 [thread overview]
Message-ID: <83bmijhpwt.fsf@gnu.org> (raw)
In-Reply-To: <87k1x8f0qr.fsf@nagas.meson.org> (mark@nagas.meson.org)
> From: "Mark Shoulson" <mark@nagas.meson.org>
> Date: Wed, 27 Dec 2017 14:07:40 -0500
>
> According to http://unicode.org/reports/tr29/#Word_Boundaries rule WB4,
> it would seem that a ZWJ character (U+200D ZERO WIDTH JOINER) between
> two "word" characters should not constitute a word boundary. And yet:
>
> (string-match "\\<" "foo\u200Dfbar" 1)
>
> evaluates to 4 (the 1 is to skip the word-beginning at the start of the
> string). Or you can search for "\\b" or "\\>" and get 3. Either way,
> indicative of a word-break at the ZWJ character. Is this correct?
Emacs considers a change of script as a word break, and U+200D's
script is 'symbol', which is different from 'latin', the script of the
ASCII characters.
next prev parent reply other threads:[~2017-12-27 20:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-12-27 19:07 bug#29871: 25.3; ZWJ word-boundaries in regexps Mark Shoulson
2017-12-27 20:33 ` Eli Zaretskii [this message]
2019-09-28 23:28 ` Stefan Kangas
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