All POSIX compatible shells have their quirks and differences because the common POSIX part is rather small, so you will need to learn them anyway when switching from one to another. Fish is not that different from them (to much less extent than something like nushell) and it benefits from having less ancient baggage.
All POSIX compatible shells have their quirks and differences because the common POSIX part is rather small, so you will need to learn them anyway when switching from one to another. Fish is not that different from them (to much less extent than something like nushell) and it benefits from having less ancient baggage.