I think the most noticeable difference is that `$foo` doesn't word-split unless you do `${=foo}`. Beyond that, I don't think one would notice they were using zs

I think the most noticeable difference is that `$foo` doesn't word-split unless you do `${=foo}`. Beyond that, I don't think one would notice they were using zsh instead of bash. In most ways, zsh is pretty much a superset of bash.