bash function substitution bugfix
bash function substitution bugfix

Our troublesome bash function's carriage return was being replace with a
space, which confused `sh` (and probably was not even a well-defined
function anyway).

By replacing with `;` and signaling an end of line, it appears to work
without issue.

aidanheerdegen/payu,aidanheerdegen/payu,nicjhan/payu,marshallward/payu,marshallward/payu