[ruby-core:74424] [Ruby trunk Bug#12190] DateTime.strptime and Time.strptime does not have compatibility in terms of parsing timezone

Issue #12190 has been updated by Naotoshi Seo.

Subject changed from DateTime.strptime parses timezone, but Time.strptime does not for some timezone to DateTime.strptime and Time.strptime does not have compatibility in terms of parsing timezone

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Bug #12190: DateTime.strptime and Time.strptime does not have compatibility in terms of parsing timezone
https://bugs.ruby-lang.org/issues/12190#change-57545

* Author: Naotoshi Seo
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin13]
* Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
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For CET, only DateTime.strptime successfully parsed timezone

```
irb(main):003:0> DateTime.strptime('2015-11-12 CET', '%Y-%m-%d %Z')
=> #<DateTime: 2015-11-12T00:00:00+01:00 ((2457338j,82800s,0n),+3600s,2299161j)>
irb(main):004:0> Time.strptime('2015-11-12 CET', '%Y-%m-%d %Z')
=> 2015-11-12 00:00:00 +0900
```

For JST also, only DateTime worked.

```
irb(main):005:0> ENV['TZ'] = 'UTC'
=> "UTC"
irb(main):006:0> DateTime.strptime('2015-11-12 JST', '%Y-%m-%d %Z')
=> #<DateTime: 2015-11-12T00:00:00+09:00 ((2457338j,54000s,0n),+32400s,2299161j)>
irb(main):007:0> Time.strptime('2015-11-12 JST', '%Y-%m-%d %Z')
=> 2015-11-12 00:00:00 +0000
```

For PST, both worked.

```
irb(main):004:0> DateTime.strptime('2015-11-12 PST', '%Y-%m-%d %Z')
=> #<DateTime: 2015-11-12T00:00:00-08:00 ((2457339j,28800s,0n),-28800s,2299161j)>
irb(main):003:0> Time.strptime('2015-11-12 PST', '%Y-%m-%d %Z')
=> 2015-11-12 00:00:00 -0800
```

I felt DateTime.strptime and Time.strptime should have compatibility.



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