[iOliverC]

Hey guys,

I have a text view app, and undo doesn't seem to want to work right.

I have no custom code on this, but if I undo once, its fine, but if I do undo twice in a row, I get this message:

2004-05-14 18:42:52.983 [968] *** -[NSBigMutableString _newSubstringWithRange:zone:]: Range or index out of bounds

2004-05-14 18:43:03.912 [968] undo: NSUndoManager 0x4b7ee30 is in invalid state, undo was called with too many nested undo groups

If I try and undo again after I get this message, I get the same:

2004-05-14 18:43:03.912 [968] undo: NSUndoManager 0x4b7ee30 is in invalid state, undo was called with too many nested undo groups

I really have no clue why this is happening since I have no code custom undo code.

Any ideas?

Thanks,
Oliver

[Chuckit]

Can you explain the situation in a bit more detail? Surely this doesn't happen any time you try to undo in any app, so what are the factors in this particular case?

[iOliverC]

Originally posted by Chuckit:
Can you explain the situation in a bit more detail? Surely this doesn't happen any time you try to undo in any app, so what are the factors in this particular case?

Oh sorry, this only happens in my one app. A HTML editor, this didn't always happen but I can't pinpoint what I added that stopped undo from working. I really have no idea why this is happening. I do have a subclass of NSTextView, but I don't think anything in there can cause this.

Thanks,
Oliver

[Chuckit]

Given the information you've presented, my strongest hunch is that you've overridden an NSTextView method that normally closes an undo group and you didn't call super, so the behind-the-scenes undo handling is out of synch.

That's more or less a shot in the dark, though.