From: Eric Wong <normalperson@...>
Date: 2016-06-16T21:45:11+00:00
Subject: [ruby-core:76057] Re: [Ruby trunk Bug#12499] case statement requires keyword "then" in windows

kenneth.abramson@gmail.com wrote:
> # if you replace ":" with "then" it does compile
> # if you leave out "then" it does not compile

This is a Ruby 1.9+ change. "then" is required after "when";
':' is no longer supported after "when"

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