undo-mechanism

[N. Volbers]

Hello everyone on the mailing list!

About half a year ago, when I was looking for an undo mechanism for my 
own python application, I stumbled upon the undo modules from 
Sketch/Skencil.  Thanks to the documentation I managed to integrate this 
into my app and until now I have been quite happy with it.

There are however some cases where it would be very convenient if some 
method actually returned a certain value besides the undoinformation.

With the current solution, the only way I can think of is to provide a 
new parameter, a list, to which the return value would be appended.

How do you cope with this situation in your application?

Best regards,

Niklas Volbers.