annotate tests/pprint.ur @ 1727:318ba997a149

Omit unnecessary parens around arrows in pretty-printing
author Adam Chlipala <adam@chlipala.net>
date Fri, 27 Apr 2012 07:35:59 -0400
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adam@1727 1 fun isNone [a] (x : option a) =
adam@1727 2 case x of
adam@1727 3 None => True
adam@1727 4 | Some _ => False