fish is also not posix compliant, it would never ship as a default shell https://stackoverflow.com/questions/48732986/why-how-fish-does-not-support-posix https:

fish is also not posix compliant, it would never ship as a default shell https://stackoverflow.com/questions/48732986/why-how-fish-does-not-support-posix https://stackoverflow.com/questions/48732986/why-how-fish-do...