Re: [PATCH 1/4] parse-options: convert "command mode" to a flag

> OPTION_CMDMODE is essentially OPTION_SET_INT plus the extra check
> that the variable had not set before.  In order to allow custom
> processing, change it to OPTION_SET_INT plus a new flag that takes
> care of the check.  This works as long as the option value points
> to an int.
>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
> diff --git a/t/t0040-parse-options.sh b/t/t0040-parse-options.sh
> @@ -324,6 +326,22 @@ test_expect_success 'OPT_NEGBIT() works' '
> +test_expect_success 'OPT_CMDMODE() detects incompatibility' '
> +       test_must_fail test-tool parse-options --mode1 --mode2 >output 2>output.err &&
> +       test_must_be_empty output &&
> +       grep "incompatible with --mode" output.err
> +'

> +
> +test_expect_success 'OPT_CMDMODE() detects incompatibility with something else' '
> +       test_must_fail test-tool parse-options --set23 --mode2 >output 2>output.err &&
> +       test_must_be_empty output &&
> +       grep "incompatible with something else" output.err
> +'