RPM: returning values from included RPM macro

Question

This is a follow-up question to RPM: loading bash script in %pre scriptlet.

I am trying to define some utility functions as macros, so later I can %include t

Answer 1

Stop wrapping the macro body in ().

That's spawning a sub-shell and preventing the function from being seen in the first case and preventing the exit from exiting the %pre scriptlet itself in the second case.