make/git/hook-pre-commit.sh

#!/bin/sh

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# This is the pre-commit git hook, which is run when a developer attempts
# to commit locally.

# Prevent committing to master
# The --short option is too recent to rely on so we use a bash expansion
# to remove refs/heads/.
branch=`git symbolic-ref -q HEAD`
if [ "${branch##*/}" = "master" ]; then
    exec 1>&2
    cat <<\EOF
Error: it looks like you're committing on master.
Use a topic branch instead.
Aborting commit.
EOF
    exit 1
fi

# Avoid mistakes in author configurations:
AUTHORINFO=$(git var GIT_AUTHOR_IDENT) || exit 1
NAME=$(printf '%s\n' "${AUTHORINFO}" | sed -n 's/^\(.*\) <.*$/\1/p')
EMAIL=$(printf '%s\n' "${AUTHORINFO}" | sed -n 's/^.* <\(.*\)> .*$/\1/p')
existing=`git log --author="${NAME} <${EMAIL}>" -n 1`
if [ -z "${existing}" ]; then
    printf "WARNING: \"${NAME} <${EMAIL}>\" is a new author.\n"
    printf "Please double-check that it is configured properly.\n"
fi

# XXX: move code style checks here from runsuite.cmake?