It should be good thing to prevent overwrite the name of the actual context where we init the undo.js.
Me was a problem, that its extend function overwrites the main window object name property.
There is a missing var keyword before name variable in the for loop.

There is no documentation on how someone can use it in the readme file.

This is useful when you have many little changes.

For example the user might move a graphical object by drag and drop.

The user would not want to undo every pixel-sized change.

I would like to be able to group some commands, that the user can undo at once.

If the project is still active I would gladly submit a pull request.

There appears to be a bug with the contenteditable demo, here's how it goes:

1. Highlight any word and click the bold button
2. Click undo
3. Highlight another word and make it bold
4. Click undo
5. Now the editable div goes to back to the state between 1 & 2, basically it should go back to nothing being highlighted, but instead it goes back to the state when the first word was highlighted.

I've tried hitting save at all of the various intervals in the sequence but this is very persistent...

I'm trying to integrate this into Ice, what I'm wanting to do is add accept and reject changes to the stack.
I need to be able to make a function for this because I'm not able to bind to a click. I'm getting an error that the variable stack is not found, how can I make it so that I can add to the stack from outside of the $(function() {?

Here's the function that I want to implenent.

function acceptAll() {
        tracker.acceptAll();
        var newValue = $("#textbody").html(); 
        stack.execute(new EditCommand(text, startValue, newValue));
        startValue = newValue;
}

Hey, this small library does a great job! But could you please give a note on the project status?

undo: function() {
this.commands[this.stackPosition].undo();
//说这里的undo()未定义
this.stackPosition--;
this.changed();
},
redo: function() {
this.stackPosition++;
this.commands[this.stackPosition].redo();
//还有这里的redo()，也是未定义
this.changed();
},