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bingemakertoday at 4:16 PM1 replyview on HN

The only implementation which is going head on with MRI is JRuby. I've heard from JRuby implementers that keeping the runtime compatible with MRI is an uphill battle. I don't know if AI can help this cause.


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byroottoday at 5:19 PM

TruffleRuby is pretty close too, if anything it’s even a bit more compatible because it’s able to run native extensions.

Also keeping compatible with MRI have been made significantly easier by Prism, the new parser that is shared by all implementations.

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