There are some doubts about these methods

Scripting
1

glyph.beginUndo()
glyph.endUndo()
layer.beginChanges()
layer.endChanges()
When these methods are appropriate, API says they are used when there are bigger changes, how to distinguish the boundaries of bigger changes, such as I perform adding background to each layer of all selected glyphs, or decompose all layers components of all selected glyphs, Need not use its?
If I only perform simple operations, can I also use them? Will it affect the efficiency of execution?

2

It is what the user will regard as one step. It summarizes all the tiny things that are undone with a single Cmd-Z.

3

The undo methods are not that important any more. That was more needed on some point.

The Changes methods can speed up the script quite a bit. When you do several things to a layer, put that between the layer.beginChanges() and layer.beginChanges() calls.

1 Like
4

I’ll update the snippets.