like($@, qr|Optional\s+arguments\s+must\s+be\s+passed\s+as\s+keys?\s*/\s*values?\s+pairs?|, 'no even number of args');
eval "use subs::auto in => \\( q{foo::bar} )";
like($@, qr|Optional\s+arguments\s+must\s+be\s+passed\s+as\s+keys?\s*/\s*values?\s+pairs?|, 'no even number of args');
eval "use subs::auto in => \\( q{foo::bar} )";