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#!/bin/sh
#
# prepare-commit-msg
# ==================
#
# ## SYNOPSIS
#
# This hook fills the user's editor with a pre-written commit message
# template, intended to help contributors adhere to good style and
# practices when it comes to writing Git commit messages.
#
########################################################################
# This hook will always recieve three arguments. We only care about the
# first for our purposes, but still assign useful names to the others
# in case we need them in the future.
COMMIT_MESSAGE=$1
COMMIT_SOURCE=$2
COMMIT_SHA1=$3
# If the commit message already contains content then the developer
# is probably using his or her own template. In which case we do not
# trample over it. We test for a pre-existing template by reading
# the first line of the commit message this hook recieved, and check
# so see if it is an empty string (apply our template) or not (leave
# the message alone).
TITLE_LINE=$(head -n1 $COMMIT_MESSAGE)
if [ -z "$TITLE_LINE" ]; then
project_dir=$(git rev-parse --show-toplevel)
template="$project_dir/etc/git/commit-template.txt"
echo "$(cat $template)\n$(cat $COMMIT_MESSAGE)" > $COMMIT_MESSAGE
fi
exit 0
|
