sorry... the impetus behind the question was this node. I was trying to wrap my mind around a solution I thought should be pretty slick but that I couldn't make work in practice.

Thanks to everyone who helped me get my mind around this.
Apologies to graff who's update I didn't consult in time.

In reply to Re^2: -s switch with -e by jcc
in thread -s switch with -e by jcc

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