[lobofta]

Because it's not preinstalled on every machine. Bash is a good target for portability reasons, but it's a shitty language to write in. If ever I get in the position again to have to write some bash, like for an installer or so, I'm going to be looking into Amber again.

[throawayonthe]

portability but not posix shell? tsk tsk

[wpm]

Portability is dead now anyways. Something can have "sh" but all you can depend on are sh semantics and built ins. The whole point of a shell script is to compose a larger workflow out of the command line tools preinstalled on a system. I can't guarantee a sh script written on macOS is going to work on FreeBSD or Linux anyways, so there's zero reason to limit myself to sh.