bind/util/tabify-changes

#!/bin/sh
#
# Copyright (C) Internet Systems Consortium, Inc. ("ISC")
#
# SPDX-License-Identifier: MPL-2.0
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, you can obtain one at https://mozilla.org/MPL/2.0/.
#
# See the COPYRIGHT file distributed with this work for additional
# information regarding copyright ownership.

expand ${1} |
sed \
-e 's/^\([1-9][0-9][0-9][0-9][0-9][0-9]\.\) */\1	/' \
-e 's/^\([1-9][0-9][0-9][0-9][0-9]\.\) */\1	/' \
-e 's/^\([1-9][0-9][0-9][0-9]\.\) */\1	/' \
-e 's/^\( [1-9][0-9][0-9]\.\) */\1	/' \
-e 's/^\(  [1-9][0-9]\.\) */\1	/' \
-e 's/^\(   [1-9]\.\) */\1	/' \
-e 's/\(	\[.\]\) */\1		/' \
-e 's/\(	\[..\]\) */\1		/' \
-e 's/\(	\[...\]\) */\1		/' \
-e 's/\(	\[....\]\) */\1		/' \
-e 's/\(	\[.....\]\) */\1		/' \
-e 's/\(	\[......\]\) */\1	/' \
-e 's/\(	\[.......\]\) */\1	/' \
-e 's/\(	\[........\]\) */\1	/' \
-e 's/\(	\[.........\]\) */\1	/' \
-e 's/\(	\[..........\]\) */\1	/' \
-e 's/\(	\[...........\]\) */\1	/' \
-e 's/\(	\[............\]\) */\1	/' \
-e 's/[ 	]*$//' |
unexpand