Hi all, This is a summary of ruby-dev mailing list. [ruby-dev:20268] splat restary In 1.8.0, both asterisk prefixed parameter in method arguments and parallel assignment operator '*' would use to_ary and to_a for conversion values to an array. Nobu Nakada fixed the implementation of the feature. [ruby-dev:20287] Is it bug of IRB? As you know IRB is a nice interactive command tool to try Ruby language and its features. NISHI Takao tried to redefine Array#[] in IRB but it stopped because the IRB is implemented in Ruby itself and use the Array class in it. Keiju and Matz followed that, in order to use Ruby's full features in IRB, the implementation of IRB should be done in Array's subclasses, and that of Ruby be clean to execute IRB properly.