[Axiom-developer] TeX output of a**bc

[kp]

Hello,

by accident I noticed the following irregularity in the TeX output
(missing {}):

a**bc (or a^bc).

Axiom:
$$
a^bc
\leqno(4)
$$

OpenAxiom, Fricas:
$$
a \sp bc
\leqno(6)
$$

Usually, one uses only one character variables :)
I'm using Axiom mostly via Python (TeXmacs, IPython) so that 
  re.sub(r"\\sp ([^ \t\r\n\f\v\\]*)", r"^{\1}", tex)
is a workaround for the moment.

Cheers
Kurt