It certainly goes without saying that anybody using a fat comma for whatever purposes should pay royalties to Larry but it has made appearances in the JS-world before JS6 - it is e.g. used in CoffeeScript.

In reply to Re: What's new in ECMAScript6, or: Oh no! Don't steal syntax from Perl! by morgon
in thread What's new in ECMAScript6, or: Oh no! Don't steal syntax from Perl! by FreeBeerReekingMonk

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