Re: org-html-postamble-format and #+DATE: specification in 8.0pre

[Rick Frankel <rick@rickster.com>]

On 04.04.2013 17:36, Dieter Wilhelm wrote:
> Nicolas Goaziou <n.goaziou@gmail.com> writes:
>> Alan Schmitt <alan.schmitt@polytechnique.org> writes:
>>
>>> Dieter Wilhelm writes:
>>>
>>> but now I can't specify a date in the form
>>>>
>>>> #+DATE:  "%Y-%m-%d"
>>>>
>>>> Formerly an empty specification meant the current date, but now in 
>>>> the
>>>> preamble the date remains empty.
>>>
>>> I'm having the same issue. Did you find a way around it?
>>
>> I didn't try to reproduce the problem, but specifying a format time
>> string as a DATE value is not possible anymore. You still can 
>> provide
>> a timestamp and tweak `org-export-date-timestamp-format' (or BIND 
>> it) to
>> format it.
>
> Sorry I don't get it completely.
> I'd like to have as the DATE value the current change time of the 
> file.
> You mean that I should set this with the Emacs timestamp facility? 
> Like:
>
> #+DATE: Time-stamp: " "

No, but you can use the modification-time() macro:

,----
| #+TITLE: Test date handling
| #+DATE: {{{modification-time(%Y-%m-%d)}}}
| #+OPTIONS: toc:nil
|
| * File was updated on {{{modification-time(%Y-%m-%dT%H:%M)}}}
| - the header date is: {{{date()}}}
| - the current time is {{{time(%Y-%m-%dT%H:%M)}}}
`----

Which will export (in ascii):

,----
|                           ____________________
|
|                            TEST DATE HANDLING
|
|                               Rick Frankel
|                           ____________________
|
|
|                                2013-04-05
|
|
|
|
|
| File was updated on 2013-04-05T09:41
| ====================================
|
|   - the header date is: 2013-04-05
|   - the current time is 2013-04-05T09:46
`----