[ruby-cvs:78600] 38722fa179 (master): [ruby/logger] Raise ArgumentError for invalid shift_age

Jeremy Evans	2019-10-15 10:08:10 +0900 (Tue, 15 Oct 2019)

  New Revision: 38722fa179

  https://github.com/ruby/ruby/commit/38722fa179

  Log:
    [ruby/logger] Raise ArgumentError for invalid shift_age
    
    Consider 'now' and 'everytime' as valid values for the previous
    behavior of rotating everytime.
    
    Fixes Ruby Bug 15977
    
    https://github.com/ruby/logger/commit/f92979a376

  Modified files:
    lib/logger/period.rb
    test/logger/test_logdevice.rb