How can I extract a coordinated year and week number from a string

[mikeymckay]

From: http://jsfiddle.net/SvJ8Q/1/

(moment("2012-12-31").year())
=> 2012
(moment("2012-12-31").week())
=> 1
(moment("2013-01-01").week())
=> 1
(moment("2013-11-08").year())
=> 2013
(moment("2013-01-08").week())
=> 2

I understand why the week function returns 1 in the above - but this really coincides with week 1 of year 2013, right? How do I get the year part of the week function?

Maybe there is a better way to achieve what I am after. I have incidents per date from many years. I want to graph the number of incidents by week. But the year/week behavior above will group 12-31-2012 data into the first week of 2012.

[ichernev]

Related to #613
A bit of work is needed to extract the year from weekOfYear function in conjunction with the week number to provide all these format tokens described in the bottom.

[mikeymckay]

I realize this isn't using the week standard, but here's was my workaround to get what I needed:

            year = date.year()
            week = Math.ceil(date.dayOfYear() / 7)

[ichernev]

There are local week numbers -- for all locales the first day of the week is defined, as well as how to determine which is the first week of a year. There is also an isoWeek that follows some standard, but the isoYear is missing.

[ichernev]

This is fixed in 699f3ab