Thank you. I'm aware of the changes documented in the 5.18 manual pages, but none of them seemed to address this problem. And I know a working script would have been very helpful, but I couldn't get this to work outside the context of my rather large program, so I decided to cross my fingers and hope someone else might be experiencing the same thing.

In reply to Re^2: Upgrade to 5.18 causes uninitialized ${^MATCH} by nbtrap
in thread Upgrade to 5.18 causes uninitialized ${^MATCH} by nbtrap

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