[swdunlop]

You can bypass a Nushell command by prepending "^". To use MacOS open, this would be "^open cat.gif"

This tic drives me nuts when I hop between fish (which I use for two features, better tab completion and background jobs) and nu. With 0.86, it might just be for background jobs, which is something Nushell has avoided dealing with entirely. CTRL-Z and "bg" is just muscle memory for me, much like "open."