The W3C XPath 3.0 Recommendation XPath 3.0 grammar defines Simple Map
expression in this way
(http://www.w3.org/TR/2014/REC-xpath-30-20140408/#id-map-operator):
[34] SimpleMapExpr ::= PathExpr ("!" PathExpr)*
It follows from this rule that a SimpleMapExpr is, among other things,
any PathExpr -- because "*" means "zero or more".
It seems rather weird to call an expression that doesn't contain any
instance of the simple map operator, a "simple mapping expression".
My guess is that the rule was meant as:
[34] SimpleMapExpr ::= PathExpr ("!" PathExpr)+
According to this rule, a SimpleMapExpr should contain at least one
instance of the simple map operator.
Hope that this problem is acknowledged and the correction is included
in the Errata.
--
Cheers,
Dimitre Novatchev
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Truly great madness cannot be achieved without significant intelligence.
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Never fight an inanimate object
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To avoid situations in which you might make mistakes may be the
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Quality means doing it right when no one is looking.
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