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#!/bin/sh
# Check that grep skips reading in some cases.

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

fail=0

echo /dev/null >exp || framework_failure_

for opts in '-m0 y' '-f /dev/null' '-v ""'; do
  for matcher in '' -E -F; do
    for file in /dev/null no-such-file; do
      eval returns_ 1 grep $opts $matcher no-such-file > out || fail=1
      compare /dev/null out || fail=1
      eval returns_ 1 grep -l $opts $matcher /dev/null > out || fail=1
      compare /dev/null out || fail=1
    done
    eval grep -L $opts $matcher /dev/null > out || fail=1
    compare exp out || fail=1
    eval grep -L $opts $matcher /dev/null > /dev/null || fail=1
  done
done


Exit $fail