Nextstep build uses iso-latin by default. WHY?

[Angelo Graziosi]

Changes between Feb. 10 and Feb. 27 have modified the default behavior 
of the NS build on OSX (at least on master).

Now (with no ~/.emacs.d nor other initialization files), "C-x C-f 
foo.txt" creates foo.txt with iso-latin-1. For ages it was similar to 
the behavior on GNU/Linux.

I don't understand why you adopted this change..

How can I restore the previous behavior?

  Angelo