Currently frename returns false for success and true for failure.
To fix this, remove one of the ! characters in line 736 of interp.c,
or download from the usual place: http://www.ccil.org/~cowan/joy.tar.gz .
Thanks to Geof Bishop for this bug report.
--
John Cowan cowan@...
One art/there is/no less/no more/All things/to do/with sparks/galore
--Douglas Hofstadter