When tab characters appear in source code, make output from -F and -R easier to parse

[nrnrnr]

Related problem

I am using rtags to build an identifier cross-reference for literate C code. Output from rc -N -F --display-name --containing function --cursor-kind is positional, and the -N is necessary lest tabs in the source code confuse my parser.

The solution I'd like

I'd like the --json option to work with -F.

Alternatives I've considered

I'd also be delighted to have rc dump everything that the server knows about symbols, as a JSON object. That would also eliminate the tiresome necessity to query each symbol individually with its own -R option (to find uses).

Other reasonable options would be to escape tab characters that appear in source code.

Additional context

For what it's worth, I am querying every symbol in a program.