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From: "David A. Moon" <Moon@SCRC-STONY-BROOK.ARPA>
From: firstname.lastname@example.org (Sandra J Loosemore)
.. Is there a compelling reason why *print-circle* is not required
to identify shared substructures, as well as circular structures? ..
.. I could imagine a user demand for separate control
of circularity detecting and sharing detection; ..
I agree that it should be two different switches. *Print-circle*
should only endeavor to find circularity, with perhaps *print-shared*
to do the full checking. I think a lot of cases of using *print-circle*
are to make sure you don't get infinite printing, where you don't really
care about sharing. In these cases, the #1#'s seem "spurious", and
actually make the data hard to read.