In your Muenchian grouping condition:
generate-id() = generate-id(key('x', @key)[1]) The [1]
is actually redundant, as generate-id() will only take the
first node returned. So you can use this:
generate-id() = generate-id(key('x', @key))
I would recommend using the "[1]", because then your code won't throw an
error when the stylesheet is upgraded to version="2.0". Also, I think it's
good generally not to rely on the implicit discarding of items in a sequence
after the first, simply because it makes your code clearer to make it
explicit.
Michael Kay
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