commit https://github.com/vim/vim/commit/1c2836e268ce930bca9ea1287d0d83e92ce1b3ff Author: Bram Moolenaar <Bram@vim.org> Date: Tue Nov 10 21:05:48 2015 +0100 patch 7.4.922 Problem: Leaking memory with ":helpt {dir-not-exists}". Solution: Free dirname. (Dominique Pelle)

#! /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