[ruby/irb] Prefer IO#wait_readable over IO#select. (https://github.com/ruby/irb/pull/323)
IO#wait_readable
IO#select
https://github.com/ruby/irb/commit/1c03bd3373
[ruby/irb] Prefer
IO#wait_readableoverIO#select. (https://github.com/ruby/irb/pull/323)https://github.com/ruby/irb/commit/1c03bd3373