--- emacs-25.1/build-aux/make-info-dir.orig	2016-06-29 11:49:16.000000000 +0200
+++ emacs-25.1/build-aux/make-info-dir	2016-12-25 17:58:48.556470701 +0100
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 
 ### make-info-dir - create info/dir, for systems without install-info