Questions on the new XSL spec (section 2.6)

[Steve Dahl <sdahl@xxxxxxxxxxx>]

In section 2.6, the new pattern rules seem confusing to me:

    Can '.', '..', ancestor(), ancestor-or-self(), and id() appear in
match patterns, or only in select patterns?

    What does it mean when they occur in a match pattern, if that's
permitted?

    Can these patterns appear in a SubtreeExpr? In other words, can they
appear as a "child" of another pattern? For example, is
'a/b/ancestor(c)/d' a permitted pattern?

    If this is permitted, what does it mean if they are preceded by '/'?
What does it mean if they are preceded by '//'?

    It's possible in the new pattern syntax to have '@x' followed
immediately by '/'. But '@x/y' is a pattern that doesn't seem to make
any sense. What kinds of NodeExpr are allowed to follow an
AttributeExpr, when they are separated by '/' or '//'? Similarly, what
kinds of NodeExpr are allowed to follow a TextExpr, CommentExpr, or
PiExpr?



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