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#!/bin/sh
# Check the file list of GNU Emacs change log entries after committing.
# Copyright 2023 Free Software Foundation, Inc.
# This file is part of GNU Emacs.
# GNU Emacs is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# GNU Emacs is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
### Commentary:
# This hook runs after a commit is finalized and checks that the files
# mentioned in the commit message match the diff. We perform this in
# the post-commit phase so that we can be sure we properly detect all
# the files in the diff (this is difficult during the commit-msg hook,
# since there's no cross-platform way to detect when a commit is being
# amended).
# However, since this is a post-commit hook, it's too late to error
# out and abort the commit: it's already done! As a result, this hook
# is purely advisory, and instead we error out when trying to push
# (see "pre-push" in this directory).
### Code:
# Prefer gawk if available, as it handles NUL bytes properly.
if type gawk >/dev/null 2>&1; then
awk="gawk"
else
awk="awk"
fi
git rev-parse HEAD | $awk -v reason=post-commit \
-f ${GIT_DIR:-.git}/hooks/commit-msg-files.awk
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