Description
The input and inputs builtins should probably not be available (i.e., should raise an error) when -n is not given.
An output builtin should be added that is only available when a new option (-N) is used and which outputs inputs to stdout. If --raw-output is given, then no newline should be output in between, or perhaps there should be a output and raw_output.
I/O functions that deal in numeric Unicode codepoint values would also be nice.
Finally, binary I/O functions that deal in numeric byte values would also be nice.
Altogether this should permit one to use jq -nrNR ... to handle all I/O from stdin / to stdout without having to deal with the normal jq I/O handling, and then practically all I/O related command-line options can be deprecated (but not removed for now).