release()
The release for this version (e.g. 1.2.0.a -> 1.2.0). Non-prerelease versions return themselves.
# File lib/rubygems/version.rb, line 266 def release return self unless prerelease? segments = self.segments.dup segments.pop while segments.any? { |s| String === s } self.class.new segments.join('.') end