Fwiw fish_add_path doesn’t fundamentally change anything, users do get confused between global and universal variables and how they interact with exported variables like PATH, so this just makes it friendlier.
It also helps prevent duplicate path entries. I'd written an "add_to_path_if_not_present" function, but "fish_add_path" should do the same thing. It's just convenience, but Fish is largely about convenience.
