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Bug #12833

closed

incorrect iso8601 parsing of YYYY-MM format

Added by jonwolski (Jon Wolski) about 8 years ago. Updated over 5 years ago.

Status:
Closed
Assignee:
-
Target version:
-
ruby -v:
ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-darwin15]
Backport:
2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
[ruby-core:77605]

Description

Duplicate

This ticket duplicates https://bugs.ruby-lang.org/issues/12285

Expected

DateTime.iso8601('2016-10') parses the input string as four-digit year and two-digit month.

$ ruby -r date -e "puts DateTime.iso8601('2016-10').iso8601"
2016-10-01T00:00:00+00:00

Actual

DateTime.iso8601('2016-10') parses the input string as four-digit year and two-digit day-of-month.

$ ruby -r date -e "puts DateTime.iso8601('2016-10').iso8601"
2016-01-10T00:00:00+00:00

Steps to reproduce

$ ruby -v -r date -e "puts DateTime.iso8601('2016-10').iso8601"
ruby 2.3.1p112 (2016-04-26 revision 54768) [x86_64-darwin15]
2016-01-10T00:00:00+00:00

More details

$ ruby -r date -e "puts Date._iso8601('2016-10')"
{:mday=>10, :year=>2016}
$ ruby -r date -e "puts Date._iso8601('2016-101')"
{:yday=>101, :year=>2016}

This seems to suggest that the "10" is parsed as day-of-month (:mday) in the case of "YYYY-DD", but "101" is parsed as day-of-year (:yday) in the case of "YYYY-DDD". (The 3-digit day part does in fact represent the day-of-year; that feature is correct.)

Files

iso8601_YYYY_MM.patch (1.39 KB) iso8601_YYYY_MM.patch jonwolski (Jon Wolski), 10/22/2016 04:01 PM

Related issues 1 (0 open — 1 closed)

Is duplicate of Ruby master - Bug #12285: Date.iso8601 does not properly handle partial date stringsClosedActions
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