[LANG-728] StringEscapeUtils.escapeXml(str) does not support supplemental characters.

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.6
• Fix Version/s: 3.0
• Component/s: lang.*
• Labels: patch
• Assignee: Unassigned
• Reporter: Taro Yabuki
• Created: 16/Jul/11 08:09
• Updated: 19/Jul/11 05:10
• Resolved: 19/Jul/11 05:10

Description

Hello.

StringEscapeUtils.escapeXml(str) escapes Unicode characters greater than 0x7f to their numerical
u equivalent:

String str = StringEscapeUtils.escapeXml("\uD84C\uDFB4");
System.out.println(str);
//��

But, the output should be 𣎴.

According to W3C document "Using character escapes in markup and CSS," We must use the single, code point value for supplemental character.
http://www.w3.org/International/questions/qa-escapes

In fact, �� is not rendered correctly in some web browsers e.g., Firefox 5.0 and Chrome 12.0.