As for maxima-5.9 (cvs of today) + gcl-2.4.0 or clisp-2.27, it is
not fixed:
with clisp, I get:
*** - argument to 1+ should be a number: |$a|
with gcl, the previous:
Error: |$a| is not of type NUMBER.
Fast links are on: do (si::use-fast-links nil) for debugging
Error signalled by MACSYMA-TOP-LEVEL.
Broken at MACSYMA-TOP-LEVEL. Type :H for Help.
MAXIMA>>:q
Thanks anyway,
Pedro.
--
Pedro Fortuny Ayuso -------------> www.maths.qmul.ac.uk/~pf
School of Mathematical Sciences. Queen Mary College, Univ. London
Mile End Road, London E1 4NS, UK ------> www.qmul.ac.uk
P.Fortuny@maths.qmul.ac.uk Tfn. Nr. 44 20 7882 5493