Undo & redo once text inserted using range

[vikynandha-zz]

Once a textarea's value is modified programmatically, the undo-redo history is lost for the textarea and Ctrl+z doesn't work anymore.

There seems to be a solution to this: http://stackoverflow.com/a/13597044/767685. This solution worked in my Chrome 38, but I haven't tested it across browsers.

[vikynandha-zz]

Sorry, it looks like the solution doesn't work in Firefox and Opera [1]. So, this has to be done conditionally with feature detection.

[1] http://help.dottoro.com/ljuecqgv.php