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Re: [Qemu-block] [Qemu-devel] [PATCH for-2.10 10/10] migration: Use JSON

From: Eric Blake
Subject: Re: [Qemu-block] [Qemu-devel] [PATCH for-2.10 10/10] migration: Use JSON null instead of "" to reset parameter to default
Date: Tue, 18 Jul 2017 14:09:46 -0500
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.1

On 07/18/2017 01:39 PM, Markus Armbruster wrote:

>>> +++ b/qapi-schema.json
>>> @@ -116,6 +116,13 @@
>>>  { 'command': 'qmp_capabilities' }
>>>  ##
>>> +# @StrOrNull:
>> A little light on the documentation.
> Care to suggest improvements?  I figure the schema is obvious enough
> without any, but the generated documentation could perhaps use some.


Specifies a string value or the explicit lack of a string (often used as
an optional parameter type, where omitting the parameter has different
semantics than supplying null).
@s a JSON string
@n an explicit NULL

and certainly worth having

Since: 2.10

Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org

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