This site is a static rendering of the Trac instance that was used by R7RS-WG1 for its work on R7RS-small (PDF), which was ratified in 2013. For more information, see Home. For a version of this page that may be more recent, see ImproperCircularLists in WG2's repo for R7RS-large.

Improper­Circular­Lists

cowan
2012-11-08 07:51:07
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Here are the valid uses of improper lists in R7RS-small in contexts where lists (as opposed to arbitrary objects) are expected:

And of circular lists: