#!/bin/sh

SCRIPT="$1"; shift
INTERP=`sed -ne '
   s!/bin/sh!/bin/sh -s!;
   1s/^%!//p
   ' "$SCRIPT"`

case "$INTERP" in
   '')
      echo 'No interpreter line (%!) found!' >&2
      exit 1
      ;;
   *) notangle "$SCRIPT" | exec $INTERP - "$@" ;;
esac