> So, I think that the proposal is (1) ill-defined; and (2) tries to replace
> the correct behaviour by an incorrect one, and should not be implemented,
> even if it can be done easily.
The way I think of how plot2d works is
(a - with plot_realpart false): plot functions defined on a subset of
R with values in R,
(b - with plot_realpart true): plot realpart(f) instead of f.
I would expect (a) if I new nothing about plot2d and I think it should
be the default behaviour. Why do you think (b) is correct and (a) is
not?
Andrej