Am Samstag, den 03.04.2010, 11:10 -0600 schrieb Robert Dodier:
> On 4/3/10, Raymond Toy <toy.raymond at gmail.com> wrote:
>
> > Ah, in lmdcls, it's pretty clear that unspecial is not supported on sbcl
> > and openmcl. We need to fix this. (I think the best solution is not
> > to have to do unspecials at all.)
>
> The use of special variables in Maxima could be cleaned up a lot.
> I wouldn't be opposed to anybody who wants to take on the task.
> I am imagining stuff like: change names to use the *foo* convention,
> replace special variables with lexical variables where possible,
> perhaps wider use of CL packages to isolate symbols used in
> different contexts. (If we did that stuff, I think we could do away
> with unspecial entirely.)
Perhaps, some unknown and known bugs will vanish too, if we change the
use of a lot of special variables.
One of these variables is EXP. It is used a lot and it is declared to be
special.
Another variable I do not like to use is VAR. Here we have to change the
implementation of schatchen or m2 to allow passing the value of VAR as
an argument. Furthermore, a lot of test functions use the global value
of VAR.
I think there are a lot of places, where we should pass the value as an
argument of the function.
Dieter Kaiser