ocaml/ocaml — pull request #2 by Chris00 (2013-08-20 13:35:19+00:00)
Title: Parse -.x**2. (unary -.) as -.(x**2.).  Fix PR#3414

This is what is expected mathematically. Note that -2.**2. is parsed
as (-2.)**2. because -2. is considered to be a constant. However
-.2.**2. is parsed as -.(2.**2.).