Afraid not, there is only one log buffer, no plans to change that or start splitting things right now, would require rewriting a lot. There might be things you can write in your program that catch errors or redirect stderr to a file or to the terminal your REPL is running in though?

Got it, thanks. I’ll try to find workarounds

Ok, I think I know what to do, in emacs cider injects error capturing in nrepl middleware, and shows a separate buffer with a beautified exception.