# shellcheck shell=dash
___x_cmd_yml_eval(){
    # 1. replace the quote string
    # 2. consider using $<>
    # 3. 
    local s; s="$(
        if [ "$#" -eq 0 ]; then cat
        else                    cat "$@"
        fi
        printf "%s" A
    )"

    local c; c='cat <<EOF
'"${s%A}""
EOF"
    eval "$c"
}

