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| It has an elegant syntax that is natural to read and easy to write. | https://www.ruby-lang.org/en/ Definitely. The syntax is elegant. But it is too complex sometimes. So, syntax highlighters for Ruby are difficult and easy to break. For example, probably your editor cannot correctly highlight `????::?:`, `% %s%% %%%%` or `def end(def:def def;end)end` (They are **valid** Ruby programs!). Yeah, it is edge cases. In real cases, some syntax highlighter cannot correctly highlight a here document. I'll talk a robust syntax highlighter for Ruby, it is Iro gem and Iro.vim. The highlighter never break since it uses Ripper to highlight code. RubyKaigi 2018 https://rubykaigi.org/2018/presentations/p_ck_
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