= RubySpec

RubySpec (https://rubyspec.org) provides the annotation of the Ruby
implementation in an executable format.  The make task
`update-rubyspec' retrieves the specification and puts it into this
directory.

== Directory structure
 spec
  +-- mspec            driver library for executing the specification.
  +-- rubyspec
       +-- core        specification for core libraries
       |    +-- array
       |    +-- bignum
       |    +-- ...
       |
       +-- fixtures    example classes for writing specs
       +-- language    specification for Ruby language itself
       +-- library     specification for standard libraries
            +-- addrev
            +-- ...

== How to run
:make target
  verifies all specs.
   $ make test-rubyspec
:mspec command
  verifies the specified spec.
   $ mspec {language|core|library}
   or
   $ mspec spec/path/to/some_spec.rb