[Xcb] <op> is busted

[Jeremy Kolb]

Josh Triplett wrote:
> Jeremy A. Kolb wrote:
> 
>><op> doesn't work with two <fieldref> values.  I have:
>>
> 
> [...]
> 
>>	<struct name="RefreshRates">
>>		<field type="CARD16" name="nRates" />
>>		<list type="CARD16"
>>name="rates"><field_ref>nRates</field_ref></list>
>>	</struct>
> 
> 
> This is the problematic expression, not the one with two <fieldref>s in
> an <op>.  That should be fieldref, not field_ref.  That's why the code
> didn't compile: there wasn't an expression output template for
> field_ref, so it just output the text instead.  This isn't an XML-XCB bug.
> 
> However, I'll change the expression parser so it generates an error for
> invalid elements; that should help track down such problems more easily
> in the future.
> 
> - Josh Triplett

Haha oops! Sorry about that. I was scratching my head over this one for 
a while.  Thanks for pointing that out.

Jeremy