[pfheatwole]

Yes, and it lives on in a variety of minimalist environments under active development, such as:

* U-boot: https://github.com/u-boot/u-boot/blob/master/common/cli_hush...

* Busybox: https://github.com/brgl/busybox/blob/master/shell/hush.c

* Barebox: https://github.com/barebox/barebox/blob/master/common/hush.c