Change in behavior of rendering an element with a css style class with a nested class array in 6.2.0 #1189
Description
in 6.1.4:
$ irb -rhaml
irb(main):001> Haml::VERSION
=> "6.1.4"
irb(main):002> Haml::Template.new { <<~EOS }.render
%p.css{ class: [%w[a b]] }
EOS
=> "<p class='css a b'></p>\n"
in 6.2.0:
$ irb -rhaml
irb(main):001> Haml::VERSION
=> "6.2.0"
irb(main):002> Haml::Template.new { <<~EOS }.render
%p.css{ class: [%w[a b]] }
EOS
=> "<p class='css ["a", "b"]'></p>\n"
ruby version
$ ruby --version
ruby 3.4.5 (2025-07-16 revision 20cda200d3) +PRISM [aarch64-linux]
Seeing as 6.2.0 removed the C extension without touching much else it seems like before that version change, jruby and cruby might have had different behavior.
I'm wondering if this change for cruby was intended or if it's a bug. Another comment also pointed this out but that was on a closed issue that never had a response from the maintainers: #1151 (comment)