I'm confused. The code you post in Re^3: Use of uninitialized value in concatenation is essentially identical to the code I posted in Re^2: Use of uninitialized value in concatenation. I agree that instead of printing 'dollarfoo' as you require, it prints 'dollar', but I get no warnings at all.

Can you please post the exact code you are executing and the execution output so I can see the exact warning message? (This is only to satisfy my curiosity; there is no urgency.)

In reply to Re^4: Use of uninitialized value in concatenation by AnomalousMonk
in thread Use of uninitialized value in concatenation by gem555

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