[ruby/reline] Correspond to refactored RubyLex (https://github.com/ruby/reline/pull/498)
ref: https://github.com/ruby/irb/pull/503
[ruby/reline] Correspond to refactored RubyLex
(https://github.com/ruby/reline/pull/498)
ref: https://github.com/ruby/irb/pull/503