On 3/14/09, Sheldon Newhouse <sen1 at math.msu.edu> wrote:
> Why is there an '&' produced in 'substring' ?
It's an artifact of the the way Maxima used to represent strings;
Maxima strings were Lisp symbols beginning with the & character.
That was changed some time ago (2007 I think).
I think the bugs you found are fixed in recent versions.
Probably you just need to update your installation.
Or you could try to download just the stringproc files from CVS.
See: http://maxima.cvs.sourceforge.net/maxima/maxima/share/contrib/stringproc
HTH
Robert Dodier