Not sarcastic... I didn't know about FlashFill. I looked at the videos, and it seems that it's not as powerful as this tool. In excel the results would be a custom cell format combined with custom text functions.
Not sure about the implementation in Excel. At least the paper (POPL 2011) describes more powerful functions, containing e.g. case distinctions and simple loops. There are some examples in there. I'm not an Excel expert, but would be surprised if cell format could do that.