WTH is there no json_attributes for command_line and RESTful binary sensors?

Month of "What the heck?!"
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1

For a comand_line sensor one can define a list of json_attributes.

But this is not possible for a binary_sensor, it is simply not implemented for binary command_line sensors.

2

That’s typically the case for most things. Binary sensor never usually has attributes. Pretty sure people just add it to sensors without touching the other files

3

Indeed. It’s the same situation with RESTful sensor and RESTful binary sensor.

The RESTful sensor supports json_attributes, whereas the binary sensor doesn’t support them.

Actually i could replace my commandline sensor (which calls a combination of curl and jq and outputs 0 or 1, together with some attributes) with a RESTful binary sensor, if it also would support json_attributes and json_attributes_path configuration options.
That would be much cleaner.