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Grapheme cluser (\X) selector capturing multiple character #410
Description
Using PCRE2 10.43, the \X selector seems to capture more than one graphemes, as if does not break before the start of a new grapheme cluster.
Regex: \X
Input: 🏳️🌈🏴☠️ (U+1F3F3 U+FE0F U+200D U+1F308 + U+1F3F4 U+200D U+2620 U+FE0F)
When run, \X matches both flag graphemes: Regex101 preview.
Could you kindly shed me a light if I'm missing something?
Thank you.
Activity
PhilipHazel commentedon Jun 3, 2024
This is a bug, caused by my misreading or misunderstanding one of the rules in Unicode Annex 29, way back when I implemented \X. I'm a bit surprised it's taken so long for it to hit anybody. Furthermore, the documentation correctly describes what the code does, but it's not what it's supposed to do! (Somewhere I even noted a difference from Perl, but never investigated.) I hope to have this fixed in HEAD in the next day or two. This is a very timely issue because the 10.44 release will be forthcoming once this fix is done. Thanks for the report.
Fix bug in \X matching too many characters. Fixes issue #410.
Ayesh commentedon Jun 5, 2024
Thank you. I tested after commit 067c2f1, it worked correctly!
[PHP 8.4][Intl] Add `grapheme_str_split`
ext/pcre: update to PCRE2 v10.44
[PHP 8.4][Intl] Add `grapheme_str_split`
ext/pcre: update to PCRE2 v10.44 (#14498)
[PHP 8.4][Intl] Add `grapheme_str_split`
[PHP 8.4][Intl] Add `grapheme_str_split`
[PHP 8.4][Intl] Add `grapheme_str_split`
7 remaining items
[PHP 8.4][Intl] Add `grapheme_str_split`
[PHP 8.4][Intl] Add `grapheme_str_split`
feature #483 [PHP 8.4][Intl] Add `grapheme_str_split` (Ayesh)
[PHP 8.4][Intl] Add `grapheme_str_split`
[PHP 8.4][Intl] Add `grapheme_str_split`
[PHP 8.4][Intl] Add `grapheme_str_split`
[Grapheme] Fix grapheme cluster splitting on PCRE < 10.44
[Grapheme] Fix grapheme cluster splitting on PCRE < 10.44
[Grapheme] Fix grapheme cluster splitting on PCRE < 10.44
[Grapheme] Fix grapheme cluster splitting on PCRE < 10.44
[Grapheme] Fix grapheme cluster splitting on PCRE < 10.44
[Grapheme] Fix grapheme cluster splitting on PCRE < 10.44
bug #616 Fix grapheme_str_split() on PCRE 8 (GPHemsley)
bug #616 Fix grapheme_str_split() on PCRE 8 (GPHemsley)