lib/Tools/env

added insert_safe, delete_safe variants;

#!/usr/bin/env bash
#
# Author: Markus Wenzel, TU Muenchen
#
# DESCRIPTION: run a program in a modified environment


## diagnostics

PRG="$(basename "$0")"

function usage()
{
  echo
  echo "Usage: isabelle $PRG [CMDLINE ...]"
  echo
  echo
  echo "  Run CMDLINE within the Isabelle environment (via the system's env command)."
  echo
  exit 1
}


## main

[ "$1" = "-?" ] && usage

exec /usr/bin/env "$@"