format-date() and negative (BCE) dates

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Subject: format-date() and negative (BCE) dates
From: "Martin Holmes gtxxgm-xsl-list-2@xxxxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 6 May 2014 22:53:14 -0000

Consider this BCE date:

-0001-12-29

If I format this using the "AD" (Gregorian) calendar, like this:

  format-date(xs:date('-0001-12-29'),
    '[Y0001]-[M01]-[D01]', (), 'AD', ())

I get an invalid date:

0000-12-29

There is no year zero in the Gregorian calendar. I get the same results using OS (Julian). What am I doing wrong here? The ISO calendar does have a year zero. If I include the E (Era) component in the picture string, I do get "BC", but I don't see why the correct negative-one year is being changed to an incorrect zero-year.

This is using Saxon 9.4 (the one distributed with Oxygen 15.2).

All help appreciated,
Martin

Current Thread
format-date() and negative (BCE) dates Martin Holmes gtxxgm-xsl-list-2@xxxxxxxxxxx - 6 May 2014 22:53:14 -0000 <= Michael Kay mike@xxxxxxxxxxxx - 6 May 2014 23:16:05 -0000 Martin Holmes gtxxgm-xsl-list-2@xxxxxxxxxxx - 6 May 2014 23:49:29 -0000 Wolfgang Laun wolfgang.laun@xxxxxxxxx - 7 May 2014 06:47:56 -0000 Liam R E Quin liam@xxxxxx - 7 May 2014 17:52:48 -0000

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