change to 4-space indents everywhere

Author: nikomatsakis

src/etc/emacs/rust-mode.el

@@ -271,8 +271,7 @@
       (setf cx parent parent (caddr (rust-state-context st))))
     (let* ((tp (rust-context-type cx))
            (closing (eq tp (char-after)))
-           (unit (if (member (rust-context-info cx) '(alt-inner alt-outer))
-                     (/ rust-indent-unit 2) rust-indent-unit))
+           (unit rust-indent-unit)
            (base (if (and (eq tp 'statement) parent (rust-context-align parent))
                      (rust-context-column parent) (rust-context-indent cx))))
       (cond ((eq tp 'comment) base)