This appears to be a bug in abs simplification. See the attached fix.
Some simplifications require the use of "tellsimpafter", but that seems not
to make any different with this bug.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: simpabs.lisp
Type: application/octet-stream
Size: 850 bytes
Desc: not available
Url : http://www.math.utexas.edu/pipermail/maxima/attachments/20070115/132be898/attachment.obj