From: matz@...
Date: 2014-05-13T23:40:20+00:00
Subject: [ruby-core:62568] [ruby-trunk - Bug #9836] [Feedback] Bad Implementation of Time.strptime

Issue #9836 has been updated by Yukihiro Matsumoto.

Status changed from Open to Feedback

I am not sure what behavior you are referring as "extremely naive".
Please be concrete.  How do you think it should behave?

Matz.


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Bug #9836: Bad Implementation of Time.strptime
https://bugs.ruby-lang.org/issues/9836#change-46714

* Author: Max Anselm
* Status: Feedback
* Priority: Normal
* Assignee: 
* Category: 
* Target version: 
* ruby -v: ruby 2.1.2p95 (2014-05-08 revision 45877) [x86_64-linux]
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN
----------------------------------------
According to the documentation, `Time.strptime` "parses +date+ using `Date._strptime` and converts it to a Time object." However this conversion is extremely naive, using only certain fields return by `Date._strptime` and ignoring the rest (for example `:wnum0`).

This creates confusing and inconsistent behavior when compared to `Date` and `DateTime`'s `strptime` methods.

For example:
```
puts Date.strptime('201418', "%Y%U")
=> 2014-05-04
puts DateTime.strptime('201418', "%Y%U")
=> 2014-05-04T00:00:00+00:00
puts Time.strptime('201418', "%Y%U")
=> 2014-01-01 00:00:00 -0500
```



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