I'm not convinced I've understood this thread 100%, but the issue caught my interest so I went away and had a play. I've put together a gist of a .juliarc.jl file that ended up being a retake on things already mentioned here, so it's possible that it's still not the solution you're looking for.
The gist is up at https://gist.github.com/tcopestake/3b3c0891d4ca29df9f09 (Note that I've been testing this in a REPL opened with the --color=no option) Typing commands in the REPL, I can see output on the screen and it's also logged in the julia-stdout.txt file. Is this not what you're looking for? Perhaps if you can point out what my code doesn't do that you need it to do, I can have another look into it. Stay safe.
