This was was cloned from bug 17638 as part of operation convergence.
Originally filed: 2012-06-28 18:59:00 +0000

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 #0   contributor@whatwg.org                          2012-06-28 18:59:46 +0000 
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Specification: http://www.whatwg.org/specs/web-apps/current-work/multipage/states-of-the-type-attribute.html
Multipage: http://www.whatwg.org/C#month-state-(type=month)
Complete: http://www.whatwg.org/c#month-state-(type=month)

Comment:
This type assumes a Gregorian calendar. Either this should be explicit called
out here, or this type should be rethought to be more inclusive of the Hebrew
and Arabic civil calendars. The step function for example is by whole months
from January 1970. Without knowing the calendar type, you cannot validly
return the number of months between January 1970 (Gregorian) and some month in
the Hebrew calendar. The new year starts at a different point in the year, or
sometimes there are 2 Hebrew new years within one Gregorian year. Perhaps an
optional "calendar" attribute on the input tag as well with a list of possible
values like "gregorian" (default), "hebrew", "arabic", and "chinese".

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