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From "Taro Yabuki (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (LANG-729) StringEscapeUtils.unescapeXml(str) does not support supplemental characters.
Date Sat, 16 Jul 2011 08:47:59 GMT

     [ https://issues.apache.org/jira/browse/LANG-729?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Taro Yabuki updated LANG-729:
-----------------------------

    Attachment: lang_2_6_unescapexml_20110716.diff

Test code and patch for org/apache/commons/lang/Entities.java.

> StringEscapeUtils.unescapeXml(str) does not support supplemental characters.
> ----------------------------------------------------------------------------
>
>                 Key: LANG-729
>                 URL: https://issues.apache.org/jira/browse/LANG-729
>             Project: Commons Lang
>          Issue Type: Improvement
>          Components: lang.*
>    Affects Versions: 2.6
>            Reporter: Taro Yabuki
>            Priority: Trivial
>              Labels: patch
>         Attachments: lang_2_6_unescapexml_20110716.diff
>
>
> StringEscapeUtils.unescapeXml(str) does not unescape numeric character references of
supplemental characters:
> String str2 = StringEscapeUtils.unescapeXml("&amp;#144308;");
> System.out.println(str2.codePointAt(0));
> //38 (it means '&amp;'.)
> This output should be 144308.
> Currently, StringEscapeUtils.unescapeXml(StringEscapeUtils.escapeXml(str)) is equal to
str, so it doesn't seem to be wrong. But, as we reported in LANG-728, StringEscapeUtils.escapeXml(str)
has a bug. When the bug is fixed, StringEscapeUtils.unescapeXml(StringEscapeUtils.escapeXml(str))
would not be equal to str. We do not expect it. (Of course, we don't expect that StringEscapeUtils.unescapeXml(StringEscapeUtils.escapeXml(str))
is always equal to str.)

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