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From "Tim Ellison (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HARMONY-6649) String.toLowerCase/toUpperCase incorrect for supplementary characters
Date Thu, 23 Sep 2010 02:33:32 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-6649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12913885#action_12913885
] 

Tim Ellison commented on HARMONY-6649:
--------------------------------------

Let's move this conversation to the dev list.

> String.toLowerCase/toUpperCase incorrect for supplementary characters
> ---------------------------------------------------------------------
>
>                 Key: HARMONY-6649
>                 URL: https://issues.apache.org/jira/browse/HARMONY-6649
>             Project: Harmony
>          Issue Type: Bug
>          Components: Classlib
>    Affects Versions: 5.0M15
>            Reporter: Robert Muir
>            Assignee: Tim Ellison
>             Fix For: 5.0M15
>
>         Attachments: HARMONY-6649_filepermission.patch, HARMONY-6649_tests.patch, harmony6649.patch
>
>
> Simple testcase:
> {code}
>     assertEquals("\uD801\uDC44", "\uD801\uDC1C".toLowerCase());
> {code}
> Looking at modules/luni/src/main/java/java/lang/String.java, the problem is these methods
iterate code units (char) not codepoints (int),
> and use Character.toLowerCase(char) and Character.toUpperCase(char), instead of Character.toLowerCase(int),
and Character.toUpperCase(int)

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