[ruby-cvs:70499] nobu:r63409 (trunk): irb.rb: update `_`

[nobu at ruby-lang.org]

nobu	2018-05-12 18:13:45 +0900 (Sat, 12 May 2018)

  New Revision: 63409

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=63409

  Log:
    irb.rb: update `_`
    
    * lib/irb.rb (IRB::Irb#eval_input): update `_` after exception.
      [ruby-core:86989] [Bug #14749]

  Modified files:
    trunk/lib/irb.rb
    trunk/test/irb/test_context.rb