Undo/Redo in dialogs

 From:  ttype (STRUBE)
7286.1 
Hi Michael,

I am working on a small script console, because I wanted colors and stuff: https://github.com/thetumbledtype/moi3d-scripts-other/blob/master/ScriptConsole.js


To make a long story short: Can I make Ctrl+Z and Ctrl+Y work in a dialog at all? While Ctrl+A, Ctrl+C, Ctrl+V and Ctrl+X seem to work most of the time, undo and redo do not work at all (in any dialog).
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