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blender-archive/source/blender/editors/space_graph
Pratik Borhade d00de988c3 WM: avoid unnecessary undo step creation when duplicating
Calling duplicate operation without selecting anything registers an undo
step. If nothing is selected (keyframe, curve, object, etc.), cancel the
operator execution to prevent undo push.

Patch improves following operators:

- ACTION_OT_duplicate
- GPENCIL_OT_duplicate
- GRAPH_OT_duplicate
- MESH_OT_duplicate
- NODE_OT_duplicate
- OBJECT_OT_duplicate

Reviewed By: campbellbarton

Ref D14511
2022-04-05 20:30:00 +10:00
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