Hi,<br><br>I find that a regualr expression below <br><br>let $regex := &#39;P{Ll}&#39;<br><br>let $input := .//subsection[matches(@title,$regex)]<br clear="all"><br>causes the error [FORX0004] Regular expression: &#39;Lexical error at line 1, column 3.  Encountered: &quot;L&quot; (76), after : &quot;{&quot;&#39;.<br>
<br>I use P{Ll} in xslt/xpath in saxon without issue and I&#39;m running basex with saxon so I assume this is something basex is parsing out as an error condition<br><br>I looked in the xquery spec for the error and found which seems to be something else<br>
An error is raised [<a href="http://www.w3.org/TR/xpath-functions-30/#ERRFORX0004" title="err:FORX0004">err:FORX0004</a>] if the value of
<code>$replacement</code> contains a &quot;<code>$</code>&quot; character
that is not immediately followed by a digit <code>0-9</code> and
not immediately preceded by a &quot;\&quot;.<br><br>Let me know your thoughts<br>Regards<br>-- <br>-<br><br>Alex G. Muir<br>Software Engineering Consultant<br>Linkedin Profile : <a href="http://ca.linkedin.com/pub/alex-muir/36/ab7/125" target="_blank">http://ca.linkedin.com/pub/alex-muir/36/ab7/125</a><br>
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