Wouldn't a package give you readable symbols? e.g. 
$Some::Package::foo++;      # new var

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instead of 
my $foo++;      # new var

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You could also choose a package name in such a way as to reduce the chance of a collision.

In reply to Re^3: Hygienic eval of templates with perl code? by Arunbear
in thread Hygienic eval of templates with perl code? by LanX

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