commit https://github.com/vim/vim/commit/d8585eded6359f1d7e1981e96ae775efd077c638 Author: Bram Moolenaar <Bram@vim.org> Date: Sun May 1 23:05:53 2016 +0200 patch 7.4.1816 Problem: Looping over a null list throws an error. Solution: Skip over the for loop.

#! /bin/sh
#
# which.sh -- find where an executable is located.  It's here because the
# "which" command is not supported everywhere.  Used by Makefile.

IFS=":"
for ac_dir in $PATH; do
	if test -f "$ac_dir/$1"; then
		echo "$ac_dir/$1"
		break
	fi
done