_grit() {
    local cur prev opts
    COMPREPLY=()
    cur="${COMP_WORDS[COMP_CWORD]}"
    prev="${COMP_WORDS[COMP_CWORD-1]}"
    opts="pull push force update refresh bronch dif diff init commit cad cal uncommit amend sad sup"
    if [ $COMP_CWORD == 1 ]; then
        COMPREPLY=( $(compgen -W "${opts}" -- ${cur}) )
    else
        COMPREPLY=()
    fi
    return 0
}
complete -o default -F _grit grit