#!/bin/sh

# Test Perl regex with context

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

require_pcre_

cat >in <<'EOF'

Preceded by 0 empty lines.

Preceded by 1 empty line.

Preceded by 2 empty lines.

Preceded by 3 empty lines.

Preceded by 4 empty lines.

EOF

test $? -eq 0 || framework_failure_

printf '%s\0' \

       'Preceded by 2 empty lines.' \

       'Preceded by 3 empty lines.' \

       'Preceded by 4 empty lines.' >exp || framework_failure_

fail=0

grep -Pzo '(?<=\n\n\n).*' in >out || fail_ 'grep -Pzo failed'

compare exp out || fail=1

Exit $fail