Mike McQuaid 7c7b15d886
bin/brew: don't allow unbound variables.
This can fail for users using `bash -u` or `set -u` in their shell so
let's try to be stricter here for both them and us.
2025-01-09 12:48:48 +00:00
..
2025-01-09 12:48:48 +00:00