Does "Revert to Last Saved" become available after saving and editing? Which 
NSDocument methods are you overriding?

It is indeed -updateChangeCount: that controls the 'Edited' state. You might 
try overriding with a call to super and setting a breakpoint or adding a log to 
make sure it's being called as expected (with NSChangeDone). That should be 
getting called by the undo mechanism, but it would be good to verify.

The only other idea I have is that maybe you need to invoke -[NSTextView 
breakUndoCoalescing] before saving, like TextEdit does.

-KP

On May 23, 2012, at 8:18 AM, Martin Hewitson <[email protected]> wrote:

> Dear list,
> 
> I have an NSDocument app that implements autosave and versions on Lion. The 
> NSDocument subclass is essentially a text editor. If I create a new document 
> and type something in the text view then the 'Edited' tag appears. I then 
> save the document to disk. After this, typing in the text view no longer 
> triggers the 'Edited' state and hence no versions are autosaved. However, 
> using "Save a Version" works fine, and I can view the versions in the 
> versions browser.
> 
> Does anyone have a clue what I'm missing? As I understand it, if I'm using 
> the default NSDocument undo mechanism (which I believe I am - at least 
> undo/redo works on the editor) then I don't need to manually call 
> -updateChangeCount:.
> 
> What else could I be doing wrong?
> 
> Many thanks for any suggestions,
> 
> Martin_______________________________________________
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