HTML Escapes writes out characters illegal in HTML
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Key: TRINIDAD-1647
URL: https://issues.apache.org/jira/browse/TRINIDAD-1647
Project: MyFaces Trinidad
Issue Type: Bug
Environment: All
Reporter: Blake Sullivan
The HTML specification disallows certain code points from appearing in HTML
files (XML has essentially the same list, minus the high ISO characters) as
specified in http://www.w3.org/TR/REC-html40/sgml/sgmldecl.html. The Trinidad
HtmlEscapes utilities allow the low control characters and the high characters
that are technically outside of Unicode to be output. This causes problems if
the content is validated.
The fix is to use numeric character references such as  rather than
outputting code point 1 directly. In addition, Internet Explorer has a bug
where � is output as "�" so it is preferable to suppress this character
rather then outputting it.
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