[Bug 29571] [XQ31] [FO31] 3.18.3 Cast

https://www.w3.org/Bugs/Public/show_bug.cgi?id=29571

--- Comment #5 from Tim Mills <tim@cbcl.co.uk> ---
Correction....

NOTE: 

As a consequence of these rules, for an expression E and type L, where

1. L is a list type, or L is a union type of which a list type is in its
transitive membership, and

2. (E instance of L) eq true

then 

E castable as L

is not generally true.  For example, xs:NMTOKENS("a b c") castable as
XS:NMTOKENS is false.  

Furthermore, if L is a list type with a mininum length facet of zero, ()
castable as L is false.

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Received on Thursday, 5 May 2016 13:40:22 UTC