Prepends the current branch name to the commit message if the branch is named stable/\d.\d.x

gistfile1.sh

#!/bin/sh

branch="$(git rev-parse --abbrev-ref HEAD)"
if [[ ${branch} == stable/* ]] ; then
    branch=${branch#stable/}
    head -n1 .git/COMMIT_EDITMSG | grep -qP "\[\d\.\d\.x\]"
    has_marker=$?
    if [[ $has_marker == 0 ]] ; then
        echo "[${branch}] " | cat - "${1}" > /tmp/tmpmessage
        mv /tmp/tmpmessage "${1}"
    fi
fi