I really like fish. It doesn't open a split pane, but it can show lists of command switches in tab complete based on man pages. I'm really tempted to try xnosh

I really like fish. It doesn't open a split pane, but it can show lists of command switches in tab complete based on man pages. I'm really tempted to try xnosh again as my daily driver for a few weeks though. I like the idea of typing out arbitrary Python code without spawning up IPython. The problems people seem to be stating about xonsh were similar to a lot of the early bugs with Fish, but those things tend to go away once more people start using the shell and reporting issues. I hope we got a whole new generation of usable shells with xonsh, oil and fish.