Personally, if POSIX compliance wasn't mandatory I'd go one step further and go with Xonsh, which offers more tangible benefits. As it is, I can add a couple o

Personally, if POSIX compliance wasn't mandatory I'd go one step further and go with Xonsh, which offers more tangible benefits. As it is, I can add a couple of plugins to zsh with zgen and get most of what makes fish interesting. They're great ideas, but there's no need to sacrifice so much for them.