[pstricks] package loading sequence pstricks-add vs pst-optic

[Herbert Voss]

Patrick Drechsler wrote:

> just thought I should share this. When testing the minimal
> example below I receive an error when the package pstricks-add is
> loaded _before_ the package pst-optic. The other way around is
> fine.

pstricks-add ist an experimental package and this will
never change. It also uses the extended xkeyval package
instead of the old keyval. This is one of the reasons
why pstricks-add must be loaded as last pstricks package.

> Is this a bug or a feature? In case the latter holds true: Maybe
> adding a sentence like
> 
> "When loading multiple pstricks packages the pstricks-add package
> should be loaded last."

ähm, I think that this is still in the docs ...
pstricks-add does a lot of modifications to pstricks, pst-plot,
pst-node, which is only possible, when it is loaded at last.

The pst-optic from http://perce.de/LaTeX/pst-optic/
uses the xkeyval package.

Herbert



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