edited - I meant STDERR

STDIO includes STDERR as well - trampoline shouldn't change these things

Say - I launch lein run or with trampoline and then connect to the process with NREPL and run `(.println System/err "something"). I then get output in the repl, but not in the launching terminal tab.

How to make it appear in the launching tab

hmm - so you want system/err of the client to be the launching terminal? I'm not sure how to hook that up, sorry