The bourne shell has been officially standardized since POSIX 25 years ago...
...and the maintainer of the Vim syntax highlighting module for Bourne Shell scripts still refuses to default to POSIX mode, because some OSs still ship with a pre-POSIX /bin/sh. grumble grumble grumble
...and the maintainer of the Vim syntax highlighting module for Bourne Shell scripts still refuses to default to POSIX mode, because some OSs still ship with a pre-POSIX /bin/sh. grumble grumble grumble