Re:Textmate 2 and why you should never rewrite your code
by incongruity on Thursday August 09, 2012 @05:43PM
(#4363425)
If there is any lesson from OS X and Windows, I think you've hit on it, exactly. The way to replace isn't to stop one and start another – instead, you need to build in parallel and have a smart migration plan.
They were two different products that ended up converging enough that sharing code made sense.