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From "Nikolay Kuznetsov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-688) java.util.regex.Matcher does not support Unicode supplementary characters
Date Wed, 28 Jun 2006 18:51:30 GMT
    [ http://issues.apache.org/jira/browse/HARMONY-688?page=comments#action_12418290 ] 

Nikolay Kuznetsov commented on HARMONY-688:
-------------------------------------------

Yes, we do not support supplementary characters. The main reason for this was that such a
support breaks quantifiers optimizations over character classes of fixed length(we support
1:-)). Now I think that I can support two different types of character classes: one for fixed
with 1(2), second for unknown(1 or 2, \\p{javaLowerCase}, for instance).

BTW, an I right that if we do not take into account unicode normalization support this problem
affects only character classes and ranges behaviour? In all the other cases it's impossible
to construct such a pattern wich will work incorrectly, if not could you please give me an
example.

Thanks.
   Nik.

> java.util.regex.Matcher does not support Unicode supplementary characters
> -------------------------------------------------------------------------
>
>          Key: HARMONY-688
>          URL: http://issues.apache.org/jira/browse/HARMONY-688
>      Project: Harmony
>         Type: Bug

>   Components: Classlib
>     Reporter: Richard Liang

>
> Hello Nikolay,
> The following test case pass on RI, but fail on Harmony.  Would you please have a look
at this issue? Thanks a lot.
>     public void test_matcher() {
>         Pattern p = Pattern.compile("\\p{javaLowerCase}");
>         Matcher matcher = p.matcher("\uD801\uDC28");
>         assertTrue(matcher.find());
>     }
> Best regards,
> Richard

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