I'd make a little script with the first two lines you showed but add two more: 
my $value = '%22Happy%20Birthday%21%22';
$value =~ tr/+/ /;
$value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
print "$value\n";

[download]
Try running that, it should show you the effect of your code, if not the mechanism.

Phil

In reply to Re: Regular Confuscion by philcrow
in thread Regular Confuscion by Imagist

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