Currently there are three functions for determining commandline token location:

• __fish_is_token_n

• __fish_is_nth_token

• __fish_is_first_token

The first two are doing the same thing, and the third can be achieved using the first two functions.

I propose to keep the first second function since it looks more sophisticated than the second first and has a better name. This may break a couple of userland functions, but that's what happens if you rely on some fish internals 😄