xb

Probably the offending code is ``` ruby OLD_JRUBY_IN_USE = JRUBY_IN_USE && (JRUBY_VERSION < '1.7.5') ``` in https://github.com/jimweirich/rspec-given/commit/d1d61d48461838844101257bb9c021958b059f29 which does a string comparison and no software version comparison.

When having JRuby installed, jruby -S gem install binary_search should install the gem flawlessly, while it does not. The Gemspec file should be modified such that the pure Ruby version...