The string value was in fact surrounded by space characters so it was NOT the same as the other string. I have added some trimming: 
for ($modified_scalar) {
        s/^\s+//;
        s/\s+$//;
    }

[download]
and it did the trick!

In reply to I did it! by Skyhawlk
in thread Compare file content with a variable content by Skyhawlk

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