Remove a warning of "method redefined; discarding old subject_block"
Remove a warning of "instance variable @subject_block not initialized"

in Should::Context::ClassMethods
Remove a warning of "instance variable @subject_block not initialized"

in Shoulda::Context::Context
Remove a warning of "mismatched indentations at 'end' with 'if'"
Remove a warning of "`&'interpreted as argument prefix" in test
Remove a warning of "instance variable @blah not initialized" in test

in context_test.rb
Remove a warning of "instance variable @blah not initialized" in test

in should_test.rb
Remove a warning of "instance variable @error not initialized" in test
Prevent a warning of "instance variable @error not initialized" in test
Remove a warning of "assigned but unused variable - child" in test