rubinius/rubinius — pull request #1720 by troessner (2012-05-13 18:07:02+00:00)
Title: Adds: Module#public_constant can only be passed constant names defined i...

...n the target (self) module.

This commit makes the corresponding spec in
spec/ruby/core/module/public_constant_spec.rb pass.
The error message is the very as issued by MRI Ruby (1.9.3 head).