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use Template::Alloy; my $t = Template::Alloy->new(AUTO_FILTER=>"html"); $t->process(\qq{[% foo %]\n}, {foo => "(&)"})' (&)
AUTO_FILTER ... [% f = "&"; g = f; g %] prints & [% f = "&"; g = f; g | none %] prints & (because g = f is a S +ET directive) [% f = "&"; g = GET f; g | none %] prints & (because the +actual GET directive was called)