How do I insert just a time stamp in a capture template?

How do I insert just a time stamp in a capture template?

[Charles Cave]

I use capture to log how I am spending my time. Every time I start a new task, 
drink a cup of coffee, have a break, arrive at work, go home, I want to quickly 
capture a note.

I use the following template

("l" "Log Time" 
    entry (file+datetree "c:/charles/My Dropbox/GTD/timelog.org") 
    "** %U - %^{Activity}  :TIME:")
)

A typical entry from this template looks like:

* 2010
** 2010-12-December
*** 2010-12-09 Thursday
**** [2010-12-09 Thu 08:10] - Arrived at the office           :TIME:

I would like to just have the time in the headline not the complete date time
stamp.

I couldn't find a % extension in the documenation
(9.1.3.2 Template expansion)

How can I just include a time only in the heading?

Charles

P.S.  My capture-mode tutorial project should be released this weeekend

Re: How do I insert just a time stamp in a capture template?

[Juan Pechiar]

%(sexp) allows to include lisp expressions in a capture template.

%(format-time-string "%H:%M") should insert the current time.

Regards,
.j.

On Wed, Dec 08, 2010 at 10:08:32PM +0000, Charles Cave wrote:
> I use the following template
>
> ("l" "Log Time"
>     entry (file+datetree "c:/charles/My Dropbox/GTD/timelog.org")
>     "** %U - %^{Activity}  :TIME:")
> )
>
> A typical entry from this template looks like:
>
> * 2010
> ** 2010-12-December
> *** 2010-12-09 Thursday
> **** [2010-12-09 Thu 08:10] - Arrived at the office           :TIME:
>
> I would like to just have the time in the headline not the complete date time
> stamp.
>
> I couldn't find a % extension in the documenation
> (9.1.3.2 Template expansion)

Re: How do I insert just a time stamp in a capture template?

[Charles Cave]

Charles Cave <charles.cave <at> gmail.com> writes:


> ("l" "Log Time" 
>     entry (file+datetree "c:/charles/My Dropbox/GTD/timelog.org") 
>     "** %U - %^{Activity}  :TIME:")

> How can I just include a time only in the heading?

Thank you Juan for responding to my question:

   %(sexp) allows to include lisp expressions in a capture template.

   %(format-time-string "%H:%M") should insert the current time.

My template now looks like

("l" "Log Time" entry (file+datetree "c:/charles/My Dropbox/GTD/timelog.org")
"** %(format-time-string \"%H:%M\") - %^{Activity}  :TIME:")

Note the escaped quotation marks near %H:%M because this function is inside 
another string.

Here are today's entries from the timelog.org file

*** 2010-12-10 Friday
**** 08:45 - Arrived - coffee and email                               :TIME:
**** 09:00 - Updated sexp in .emacs                                   :TIME:
**** 09:13 - Responded to org-mode postings                           :TIME: