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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, 16 Sep 2010 10:47:33 GMT

    [ https://issues.apache.org/jira/browse/HARMONY-6649?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12910086#action_12910086
] 

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

... though if it is used as part of the bootstrapping of the class libraries there may need
to be some way to do toUpperCase until we are ready to load ICU.

> 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
>
> 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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