[Exist-open] XPath questions

[Martin R. <ra...@un...>]

I am currently playing around with eXist, and I am very pleased by the 
speed and flexibility. When testing it in the web interface against a 
sample XML document (see below) I got some results I don't understand.

//div[nr='']
produces HTTP ERROR: 500 String index out of range: 0
Should it not return divs 5 and 6?

//div[nr=0]
returns nothing.
Should it not return divs 5 and 6?

//div[number(nr)=0]
also returns nothing.

//div[not(nr)]
returns only  div 7.
How do I query for divs with empty "nr" tags?

Thanks for any comments,

Martin

<?xml version="1.0" encoding="ISO-8859-1" standalone="yes"?>
<test>
	<div id="1">
		<nr>1234</nr>
	</div>
	<div id="2">
		<nr>2345.12</nr>
	</div>
	<div id="3">
		<nr>1234 ABC</nr>
	</div>
	<div id="4">
		<nr>ABC</nr>
	</div>
	<div id="5">
		<nr></nr>
	</div>
	<div id="6">
		<nr />
	</div>
	<div id="7"></div>
</test>