rubinius/rubinius — pull request #1872 by floere (2012-08-20 10:28:01+00:00)
Title: Failing spec for String#tr.

`"hello".tr("helo", "1212").should == "12112"` but incorrectly results in `"122222"`. The pull request contains a more comprehensive example.

Please also see https://github.com/rubinius/rubinius/issues/1871 for a more in-depth description of the problem.