Issue #12285 has been updated by John Backus.


Victor Shepelev wrote:
> > Date is not maintained now. We can not answer your concern.
> 
> What does this mean? Date is in a separated gem now, or just not all of the standard library has its maintainers?
> This is also related to `DateTime`, as far as I can understand?

I'm interested in the answer for this too. What exactly does "`Date` is not maintained" mean? Is there something in the documentation that conveys this? What else is not maintained in the standard library?



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Bug #12285: Date.iso8601 does not properly handle partial date strings
https://bugs.ruby-lang.org/issues/12285#change-59775

* Author: John Backus
* Status: Open
* Priority: Normal
* Assignee: 
* ruby -v: ruby 2.3.0p0 (2015-12-25 revision 53290) [x86_64-darwin15]
* Backport: 2.1: REQUIRED, 2.2: REQUIRED, 2.3: REQUIRED
----------------------------------------
> For reduced accuracy, any number of values may be dropped from any of the date and time representations, but in the order from the least to the most significant. For example, "2004-05" is a valid ISO 8601 date, which indicates May (the fifth month) 2004.

From https://en.wikipedia.org/wiki/ISO_8601#cite_ref-AccuracyVsPrecision_8-0

However if I parse this example value with `Date.iso8601` I get "January 5th, 2004" when I expect "May 1st, 2004":

```
$ irb -r date
2.3.0 :001 > date = Date.iso8601('2004-05')
 => #<Date: 2004-01-05 ((2453010j,0s,0n),+0s,2299161j)>
2.3.0 :002 > date.month
 => 1
 ```



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