[Maxima] Strange plot2d behaviour

[Michel Van den Bergh]

Plot2d behaves very strangely. I will file a bug report unless somebody 
tells me I am doing something stupid.

(%i1) g(s):=block([s__],s__:s,remvalue(s),s__)$
(%i2) g(2);
(%o2)                                  2
(%i3) plot2d(g,[t,1,2]);
Warning: Illegal `remvalue' attempt:
s
Warning: Illegal `remvalue' attempt:
s

etc...

The plot however is fine.

Michel