1#! /bin/sh
2
3# Copyright (C) 2004 Free Software Foundation, Inc.
4#
5# This script is free software; the Free Software Foundation gives
6# unlimited permission to copy, distribute and modify it.
7
8# Invoke a shell script with the same name two directories up from this
9# file.  Robust against all kinds of pathological file and directory
10# names, as well as all kinds of pathological shells.
11# By Nathanael Nerode, Zack Weinberg, and Alexandre Oliva.
12
13# Insert "../../" just before the last slash in the pathname.
14# We use a here-document to avoid problems with "echo" and
15# pathnames containing backslashes or a leading dash.
16
17script=`sed 's,[^/]*$,../../&,' << EOF
18$0
19EOF
20`
21
22# Must honor CONFIG_SHELL if set.
23# Simple "$@" does the wrong thing for zero arguments with
24# OSF/1 4.0 /bin/sh, possibly others.
25# ${1+"$@"} does the wrong thing with zsh (== /bin/sh in
26# some iterations of Darwin).
27
28case $# in
29   0) exec ${CONFIG_SHELL-/bin/sh} "$script" ;;
30   *) exec ${CONFIG_SHELL-/bin/sh} "$script" "$@" ;;
31esac
32
33