Eh? That's just filling in a template. You can do it with symbolic refs (if the variables aren't lexicals) or, preferably, with hash lookups. 
my $text = q{
Dear $person,
I know that this text is $adjective.
But I wish it could be...
};

my %replace = (person    => 'Mom',
               adjective => 'not interpolated');

$text =~ s/\$(\w+)/$replace{$1}/g;

print $text;

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In reply to Re: Dreaming of Post Interpolation by takshaka
in thread Dreaming of Post Interpolation by BBQ

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