The exact code for perl to take into consideration multiple routes to the same node so that rmap_ref need not be called multiple times would be

rmap_ref { $_[0]{seen} = {}; $_ = "$_" if JSON::is_bool($_) } $result;

In reply to Re^4: Converting boolean values in XMLout by perlyogi
in thread Converting boolean values in XMLout by this_is_a_test

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