From mboxrd@z Thu Jan  1 00:00:00 1970
From: Tassilo Horn <tassilo@member.fsf.org>
Subject: Re: bug#9695: allowed date range
Date: Thu, 13 Oct 2011 09:28:04 +0200
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References: <87ty7kd8oh.fsf@kanis.fr>
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Ivan Kanis <ivan.kanis@googlemail.com> writes:

Hi!

> After investigating further <2011-10-17 >--<2011-10-30 > works but not
> <2011-10-17>--<2011-10-30>. The regexp for a timestamp is defined in
> org-ts-regexp :
>
> "<\\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\}[^\r\n>]*?\\)>"
>
> Shouldn't the trailing space be optional?

In your regex, there is no trailing whitespace, but are right that it is
in the original definition.

,----[ C-h v org-ts-regexp RET ]
| org-ts-regexp is a variable defined in `org.el'.
| Its value is
| "<\\([0-9]\\{4\\}-[0-9]\\{2\\}-[0-9]\\{2\\} [^\r\n>]*?\\)>"
|                                            ^
`----

Strangely, that timestamp regex didn't change for 3 years...

Oh, now I see what's wrong.  All time stamps consist of the date and
then the day's name abbreviation, which is missing with your example.
Correct would be

  <2011-10-17 Mon>--<2011-10-30 Sun>

Bye,
Tassilo