Re: [PATCH v5 1/8] qemu-options: New -compat to set policy for deprecated interfaces

[Peter Krempa]

On Mon, Sep 14, 2020 at 10:47:55 +0200, Markus Armbruster wrote:
> Policy is separate for input and output.
> 
> Input policy can be "accept" (accept silently), or "reject" (reject
> the request with an error).
> 
> Output policy can be "accept" (pass on unchanged), or "hide" (filter
> out the deprecated parts).
> 
> Default is "accept".  Policies other than "accept" are implemented
> later in this series.
> 
> For now, -compat covers only syntactic aspects of QMP, i.e. stuff
> tagged with feature 'deprecated'.  We may want to extend it to cover
> semantic aspects, CLI, and experimental features.
> 
> The option is experimental.
> 
> Signed-off-by: Markus Armbruster <armbru@redhat.com>
> ---

I wasn't able to find any good anchor point which would allow me to
detect that this command line option/feature is present.

Is there anything in e.g. in query-qmp-schema or query-command-line-options
I could base this capability on?