merge revision(s) 57530: [Backport #13191]
sample/pty/shl.rb: update sample * Specify frozen_string_literal: true. * Fix TypeError of raise. * Use a character literal instead of Integer.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@59404 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 57530: [Backport #13191]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_4@59404 b2dd03c8-39d4-4d8f-98ff-823fe69b080e