In zsh, I think Ctrl-/ pops up the manpage and then restores the command line when you quit (this may be just my config). It’s not as nice, but zsh’s line edito

In zsh, I think Ctrl-/ pops up the manpage and then restores the command line when you quit (this may be just my config). It’s not as nice, but zsh’s line editor does implement everything you need to extend it with this sort of workflow