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