#! /bin/sh

set -e
ext=""
while :; do
  case "$#:$1" in
    0:* | *:-h | *:--help)
      echo "Usage: $0 [-e EXT] PROG ARGS..."
      echo "  Buffer stdin to temp file and pass to PROG with ARGS"
      exit 0
      ;;
    1:-e) echo >&2 "$0: missing argument"; exit 1 ;;
    *:-e) ext=$2; shift 2 ;;
    *:-e*) ext=${1#-e}; shift ;;
    *:--) shift; break ;;
    *:-*) echo >&2 "$0: unknown option \`$1'"; exit 1 ;;
    *) break ;;
  esac
done
tmp=${TMPDIR-/tmp}/buf-$$
mkdir "$tmp"
trap 'rm -rf "$tmp"' INT QUIT TERM HUP EXIT
cat >"$tmp/buf$ext"
set +e; "$@" "$tmp/buf$ext"; st=$?; set -e
trap '' INT QUIT TERM HUP EXIT
rm -rf "$tmp"
exit $st