@restorante @demiguru @weavejester
Vi isn't composable either. Sed and Ed and awk are composable.
That argument is out of context when talking about things with user interfaces.
I would say that emacs is ultimately more composable than vi, vim, or neovim. Emacs can integrate easily with other systems and tools.
That's the thing that it does amazingly well. Just because it's a super power doesn't mean that it's not within the philosophy.
The extensibility of #Emacs through integration with other tools is off the charts. That to me is completely within the Unix philosophy. I've been a Unix dev for 45 years. I think I know.