[Reduce-algebra-developers] error reporting

[Jarmo H. <hie...@ut...>]

> I observe that I can generate a diagnostic as follows
> 
> 1: deg (sin x/cos y, x);
>
>       sin(x)
> ***** -------- invalid as polynomial
>        cos(y)
>
> so you can track through and see the (symbolic mode) code for the function
> typerr that arranges to be able to embed an algebraic expression within a
> message that gets sent back to the user.

When I deal with very large expressions I do not want error report to be of type

**** ((hundreds of lines of expression )) is not a polynomial,

I would rather prefer a more laconic form, such as

**** expression given to factorize is not a polynomial

Can one control the output of error reporting by a switch?

Jarmo Hietarinta