From: Marcus Stollsteimer <sto.mar@...>
Date: 2012-06-28T17:21:07+09:00
Subject: [ruby-core:45935] Re: [ruby-trunk - Bug #6656][Open] Time#strftime('%Z') should return 'UTC' instead of 'GMT'

Am 28.06.2012 02:29, schrieb Tanaka Akira:
> 2012/6/27 stomar (Marcus Stollsteimer) <redmine@ruby-lang.org>:
>>
>> Issue #6656 has been reported by stomar (Marcus Stollsteimer).
>
>> Time#strftime('%Z') should return 'UTC' instead of 'GMT',
>> as in Time#to_s and Time#zone. This is also the behaviour of Ruby 1.9.3.
>>
>>   irb(main):001:0> Time.utc(2012, 6, 27).to_s
>>   => "Wed Jun 27 00:00:00 UTC 2012"
>>   irb(main):002:0> Time.utc(2012, 6, 27).zone
>>   => "UTC"
>>   irb(main):003:0> Time.utc(2012, 6, 27).strftime('%Z')
>>   => "GMT"
>
> Ruby 1.8 uses strftime() in libc.
>
> Ruby 1.9 uses own strftime() which %Z should produce UTC.
>
>    % ruby-1.8.7p357 -ve 'p Time.utc(2012, 6, 27).strftime("%Z")'
>    ruby 1.8.7 (2011-12-28 patchlevel 357) [x86_64-linux]
>    "GMT"
>    % ruby-1.9.3p194 -ve 'p Time.utc(2012, 6, 27).strftime("%Z")'
>    ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]
>    "UTC"
>
> Do you really sure that it returns "GMT" with Ruby 1.9.3?
>

Sorry, what I meant is:

The desired behavior would be that "UTC" is used *consistently*
in all 3 methods, as is already the case in Ruby 1.9.3.

At the moment, strftime('%Z') behaves differently in versions 1.8.7
and 1.9.3 and additionally even behaves in an unexpected and
most inconsistent way within 1.8.7: #strftime('%Z') and #zone
should output the same time zone name.

rdoc for Time#zone (1.8.7):

   Returns the name of the time zone used for time.
   As of Ruby 1.8, returns �UTC� rather than �GMT� for UTC times.

rdoc for strftime with '%Z' (1.8.7):

   %Z - Time zone name

Marcus


-- 
<https://github.com/stomar/>