New Feature?

[JPnyc]

Tried what? Adding an event listener? MS has it's own method for that too; attachEvent().

[penagate]

Yes. It had the same effect as yours - counter worked, undo didn't. Also tried a few other things, none of which worked.

[JPnyc]

You're saying you tested adding an event listener to the textarea element with Vbulletin and had the same result? Hmm........curiouser and curiouser

[penagate]

Well actually no, I just used a regular textarea. It seems to be an underlying problem with IE's handling of keyboard events because it occured with keydown, keypress and keyup - having the event handler breaks undo. I also tried returning false and true and exiting the handler various ways if the Control key was depressed.

[JPnyc]

Damn, that means I can't fix it. Well thanks MUCHO for testing it, at least you saved my remaining hair! Guess it's ok now to sweep up the hair around my pc chair.

[penagate]

OK, the event handler itself plays fine with undo - but if you so much as remotely contemplate altering the document contents from the event handler it breaks it. Even if you set a timeout and then do it.

[penagate]

Blah:

The way undo/redo works in Internet Explorer it seems to reset the undo buffer every time you use JavaScript to set the value of a form element or otherwise make changes to the page. Because of this the built in undo/redo functionality of the browser doesn't work.

I give up - you could use just addEventListener and have it work in less buggy browsers.

[JPnyc]

Ah well, we tried. It's not that useful a feature anyway, it's just that I hate giving up on stuff without resolving. It gnaws at me.

[JPnyc]

FYI I did more testing on this, with a simple page, instead of the much busier forum page, and it's definitely an IE bug. No matter how the function is written or called, undo breaks in IE 6 and 7.