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https://issues.apache.org/jira/browse/XERCESC-1816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12613690#action_12613690
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John Snelson commented on XERCESC-1816:
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I agree - I'd be in favour of changing the non-XML Schema mode to follow the
XPath 2.0 / XQuery spec.
If no one objects then I'll make those changes. I'd also like to write some
proper documentation on the RegularExpression class, to avoid this kind of
ambiguity in the future.
> Multi-character escape classes don't work correctly in regular expressions
> --------------------------------------------------------------------------
>
> Key: XERCESC-1816
> URL: https://issues.apache.org/jira/browse/XERCESC-1816
> Project: Xerces-C++
> Issue Type: Bug
> Components: Validating Parser (XML Schema)
> Affects Versions: 2.8.0, 3.0.0
> Reporter: John Snelson
>
> The regular expressions "\i", "\I", "\c" and "\C" do not work as specified in
> the XML Schema specification:
> http://www.w3.org/TR/xmlschema-2/#nt-MultiCharEsc
> In fact, "\I" and "\C" cause an infinite loop during the parsing of the
> regular expression, "\i" seems to only match the letter "i", and "\c" gives
> the error:
> A character in U+0040-U+005f must follow '\c'.
> I'd be happy to attempt to fix this bug, but I need some guidance as to what
> the code for "\c" is actually meant to be doing.
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