down.sh --no-prune cannot be passed bare #43

The case pattern globs on =*, so ./down.sh --no-prune falls through to the catch-all and exits 1.

The problem

        --purge)
            PURGE=true
            shift
        ;;
        --non-interactive=*)
            NON_INTERACTIVE_MODE="${i#*=}"
            shift
        ;;
        --no-prune=*)
            PRUNE=false
            shift
        ;;

        *)
        echo "Unexpected option: $1"
        exit 1

--purge two cases above is the bare-flag form; --no-prune is written in the value-taking form but discards the value. So the one spelling that reads naturally is rejected, and --no-prune=true parses and sets PRUNE=false.

Why it matters

Skipping the prune is only reachable by passing an = and a value that is then ignored. The failure is loud (Unexpected option), so this costs a retry rather than silently pruning.