BernardK
Programming Ruby 3.2 (5th Edition): B2.0 page 468, missing puts
page 468, reference/kwargs_2.rb produces no output :
% ruby -w reference/kwargs_2.rb
%
Adding puts to the last line shows a result :
puts header("TOC", class: "nav", level: 2, id: 123)
% ruby -w reference/kwargs_2.rb
<h2 class="nav" id="123">TOC</h2>
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