[Bug 29226] [xt30] Empty enclosed expressions

https://www.w3.org/Bugs/Public/show_bug.cgi?id=29226

--- Comment #2 from Abel Braaksma <abel.braaksma@xs4all.nl> ---
> It is a static error if the string contained between matching curly brackets 
> in a value template does not match the XPath production ExprXP30? (that is, 
> an expression or nothing)

We may need to be explicit about whitespace; "nothing" is too broad (or
narrow). For XPath whitespace is clearly defined, but we now say "optional
XPath expression", so we must be clear about what it is when it is not an XPath
expression.

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Received on Thursday, 22 October 2015 19:29:14 UTC