On Mon, 14 Sep 2020 at 09:55, Markus Armbruster <armbru@xxxxxxxxxx> wrote: > > New option -compat lets you configure what to do when deprecated > interfaces get used. This is intended for testing users of the > management interfaces. It is experimental. > > -compat deprecated-input=<in-policy> configures what to do when > deprecated input is received. Available policies: > > * accept: Accept deprecated commands and arguments (default) > * reject: Reject them > * crash: Crash > > -compat deprecated-output=<out-policy> configures what to do when > deprecated output is sent. Available output policies: > > * accept: Emit deprecated command results and events (default) > * hide: Suppress them > > For now, -compat covers only deprecated syntactic aspects of QMP. We > may want to extend it to cover semantic aspects, CLI, and experimental > features. Some bikeshedding on option naming... If this only covers QMP, should we make the argument to -compat have a name that expresses that? eg deprecated-qmp-input, deprecated-qmp-output ? Also, it seems a bit repetitive to say 'deprecated' here all the time -- do you have a future use of -compat in mind which would be to adjust something that is *not* deprecated ? If not, maybe the 'deprecated' part should be in the option name rather than in every argument, eg -deprecation-compat qmp-input=crash,qmp-output=hide,cli-option=reject ? thanks -- PMM