Comment on Gradual type checking for RubyparentComments−damncabbage11yIn case the question is actually "Why not 1.9.3?", it's likely because 1.9.3 is End Of Life, and doesn't even get security upgrades now:https://www.ruby-lang.org/en/news/2014/01/10/ruby-1-9-3-will...https://www.ruby-lang.org/en/news/2015/02/23/support-for-rub...
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In case the question is actually "Why not 1.9.3?", it's likely because 1.9.3 is End Of Life, and doesn't even get security upgrades now:
https://www.ruby-lang.org/en/news/2014/01/10/ruby-1-9-3-will...
https://www.ruby-lang.org/en/news/2015/02/23/support-for-rub...