Pfaff calls it an edge joining foot. I use it for heirloom, but it zigs pieced batting together really well.

BTW - this is a great book if you look into it. I had the first one.
Fancy Footworks 2/Sewing With Nancy/sewing machine tips | Nancy Zieman Blog

You can do really narrow piping with a pintuck foot. She has uses for other feet that are not obvious.