From: Eric Wong <normalperson@...>
Date: 2015-04-21T22:45:58+00:00
Subject: [ruby-core:68956] Re: [Ruby trunk - Feature #11084] Use rb-readline instead of ext/readline

I doubt performance is problem for readline, but features/compatibility
might be...  I favor a pure-Ruby implementation if there's no
feature/compatibility regressions.