I'm getting a reproducible "too many nested undo groups" message logged.
But I don't know what to look for because I don't know what that
means. How many is "too many"? Of what? Is there any way to see the
number?
Here is what I have found by experiment:
Whenever I -beginUndoGrouping, -groupingLevels is incremented.
Whenever I -endUndoGrouping, -groupingLevels is decremented.
If I -endUndoGrouping when -groupingLevels is 0, I get an
exception: -endUndoGrouping invoked with no matching begin.
All this makes sense. Then, by extension, "too many nested undo
groups" implies that -groupingLevels is too high. But by default, -
levelsOfUndo is inifinite.
The "Undo Architecture" document seems to just scratch the surface in
so many places! If someone can answer this I'll happily file a bug.
Thank you,
Jerry Krinock
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