#!/bin/sh

# Ensure that an invalid range like [b-a] evokes exit status of 2.

. "${srcdir=.}/init.sh"; path_prepend_ ../src

fail=0

printf 'grep: Invalid range end\n' > exp

for prog in grep 'grep -E'; do

  # exit status must be 2, not 1

  returns_ 2 $prog '[b-a]' < /dev/null > out 2>&1 || fail=1

  # Normalize the diagnostic prefix from e.g., "/mnt/dir/grep: " to "grep: "

  sed 's/^[^:]*: /grep: /' out > k && mv k out

  compare exp out || fail=1

done

Exit $fail