RE: test if null
> Also, an aside -- I'm sure there's a reason why some people prefer > "string-length(.)!=0" to "string()" (or more robustly, > "normalize-space()") > -- but I've never been able to guess what it could be. Slight unease, I think, at relying on implicit type conversion. It feels a bit sneaky, like using 0 to mean false in C. Michael Kay http://www.saxonica.com/
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