commit https://github.com/vim/vim/commit/14ad611ca435d97e8fd0d9ab03ddc982843298ac Author: Bram Moolenaar <Bram@vim.org> Date: Mon Feb 1 21:47:13 2016 +0100 patch 7.4.1233 Problem: Channel command may cause a crash. Solution: Check for NULL argument. (Damien)

#! /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