Hi there,
Currently, when a regular command doesn't have any data to output,
QMP will emit:
{ "return": "OK" }
I thought this was a good idea because it has a clear meaning. Silly me,
this is optimized for humans, but for machines it introduces the problem
that such commands can't be changed to return values.
I'm not sure this is will ever happen, but to stay safe a better way
would be to return an empty dict, like this:
{ "return": {} }
Which can be read as 'command succeeded, but didn't return any data'.
As the release is not done yet we still can change it, is anyone against?
