[ruby/irb] Improve history test's encoding setting (https://github.com/ruby/irb/pull/1022)
improve history test's encoding setting
fix missing locale error for ci and refactoring
https://github.com/ruby/irb/commit/7f385bc19b
[ruby/irb] Improve history test's encoding setting
(https://github.com/ruby/irb/pull/1022)
improve history test's encoding setting
fix missing locale error for ci and refactoring
https://github.com/ruby/irb/commit/7f385bc19b