Posted by ggrossetie on Sep 24, 2013; 9:23pm
URL: https://discuss.asciidoctor.org/Upgrading-Asciidoctor-js-to-the-latest-version-of-Asciidoctor-tp636p657.html

A little bit verbose but it seems to be working :
@attribute_overrides = (options[:attributes] || {}).inject({}) do |collector,hash|
  key, value = hash