#!/bin/sh

# edit preliminary git message in .git/message

error_exit() {
    echo "Fatal: not a git repository (or any of the parent directories): .git"
    exit 1
}

cd_to_dotgit_dir() {
    while [ ! -d '.git' ]; do
        [ "$PWD" = "/" ] && error_exit
        cd ..
    done
    cd ".git" || error_exit
}

cd_to_dotgit_dir
"$EDITOR" "message"