Re: [xsl] [XPath 1.0] Why is .[A] illegal but self::node()[A

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Subject: Re: [XPath 1.0] Why is .[A] illegal but self::node()[A] is legal?
From: Michael Kay <mike@xxxxxxxxxxxx>
Date: Sat, 07 Aug 2010 18:01:27 +0100

On 07/08/2010 16:17, Costello, Roger L. wrote:

Hi Folks,

Why is this XPath 1.0 expression illegal:

.[A]

whereas this XPath 1.0 expression is legal:

self::node()[A]

Isn't '.' a shorthand for 'self::node()'? Shouldn't I be able to interchange the two in any expression?

I think the most likely explanation is that disallowing .[A] in XPath 1.0 was an unintentional mistake, an unforseen consequence of the way the grammar rules were written. At any rate, I never encountered anyone who put forward a rationale for it, or who suggested that it was a deliberate design choice.

Michael Kay
Saxonica

Current Thread
[XPath 1.0] Why is .[A] illegal but self::node()[A] is legal? Costello, Roger L. - 7 Aug 2010 15:17:27 -0000 Wolfgang Laun - 7 Aug 2010 16:06:12 -0000 Michael Kay - 7 Aug 2010 17:01:42 -0000 <=

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