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In what version or patchlevel did the following warning get added?
warning: assigned but unused variable - x
I heard about it from http://www.slideshare.net/tenderlove/nordic-ruby-2011
A quick git grep showed that this was added in this commit on June 16, 2010, then reverted on June 17, 2010 due to some problems, and was finally added on June 20, 2010.
Note: I ran
git log --reverse -S "assigned but"on the Ruby git repo to find these commits.