I'm still a bit angry that all shell development (as glacial as it is) seems to focus on the blinkenlights, not on the language features. ksh93 is still superio

I'm still a bit angry that all shell development (as glacial as it is) seems to focus on the blinkenlights, not on the language features. ksh93 is still superior to all the contemporary linux shells in this aspect. (And Plan9 fandom, I'm aware of rc)