--json without request items omits body instead of sending empty object

[blyxxyz]

Checklist

• I've searched for similar issues.
• I'm using the latest version of HTTPie.

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Minimal reproduction code and steps

Run http --offline --json post :

Current result

A request with Content-Type: application/json and an empty body is sent.

Expected result

{} is sent as a body.

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It seems to me that HTTPie shouldn't construct an invalid JSON body if it picks a JSON content type.

(Without the --json flag no Content-Type header is sent, so everything's fine.)

See also:

• --json with no request items omits body entirely instead of providing empty object ducaale/xh#218
• --json with empty body doesn't set Content-Type #137

[isidentical]

Thanks for the report @blyxxyz, but we have concluded that this might not be very intuitive (adding a different behavior when a default option is specified explicitly). I think the easiest route is just sending it with --raw, e.g http --offline pie.dev/get --raw="{}".

[blyxxyz]

#137 already decided opposite by making explicit --json add a Content-Type header, so then maybe that should be reverted instead? Right now it's inconsistent.