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Revert last undo

Triggers the redo command on the transaction log.

Once a new transaction is initiated (e.g. by):

Running an RGG function,
Modifying an object through the attribute editor,
Adding an object via the menu,

the previous redo history is discarded. That means GroIMP does not support branching histories like version control systems.

Example of an unsupported sequence: ❌ Undo → Apply new operation → Redo ❌

Note: applying a transaction take some time. Clicking very fast between undo/redo, might trigger a transaction before the last one is properly performed. It usually lead to a NullPointerException.