[ruby-cvs:78535] ad6837dd60 (master): [ruby/irb] Revert "Reidline mode needs Reline what needs String#grapheme_clusters"

aycabta	2019-12-07 20:21:08 +0900 (Sat, 07 Dec 2019)

  New Revision: ad6837dd60

  https://github.com/ruby/ruby/commit/ad6837dd60

  Log:
    [ruby/irb] Revert "Reidline mode needs Reline what needs String#grapheme_clusters"
    
    This reverts commit 2b0b19b87c60d2cdb329979acbb96e12a1f940e7.
    
    New IRB parser needs new Ripper what has lex_state too. The new Ripper is
    adopted by Ruby 2.5 or later.
    
    https://github.com/ruby/irb/commit/9ab6e35a2c

  Modified files:
    lib/irb/input-method.rb