Experimental Physics and
Industrial Control System

Michael Davidsaver via Core-talk <core-talk at aps.anl.gov> · Wed, 7 Feb 2024 08:54:51 -0800

On 2/7/24 02:28, NICOLE Remi via Core-talk wrote:

Hello everyone,

I planned on upgrading EPICS from 7.0.7 to 7.0.8 in our build system,
but had some errors in our PV access tests.

Apparently, in 7.0.8, the 'pvget my:pv -M json' now returns JSON5:

     my:pv:name
{value:42.0,alarm:{severity:0,status:0,message:""},display:{description
:"My PV description"}}

Where before in 7.0.7, it returnd standard JSON:

     my:pv:name
{"value":42.0,"alarm":{"severity":0,"status":0,"message":""},"display":
{"description":"My PV description"}}

Was this a conscious choice? I don't see the change in the release
notes. I think for interoperability, standard JSON would be better.

This change was the result of:

https://github.com/epics-base/pvDataCPP/pull/93

Further changing to add "-M json5" seems reasonable
to me.  I will let Andrew say more.