flattenOutlines cannot be revoked

1

GSLayer.flattenOutlinesRemoveOverlap_origHints_secondaryPath_extraHandles_error_(False, None, None, None, None)
After this method is executed, it cannot be revoked（command+z） to the state before expansion.How can solve this problem?

2

flattenOutlines is only being used on export. So undo is disabled on purpose. What do you need it for?

3

i need batch to expanded for selected glyphs.

4

The menu command Path → Remove Overlap (⇧⌘O) works with all selected glyphs, both in Font View and Edit View.

5

i want to batch expand path，not removelap.

6

What exactly do you try to expand?