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From: Eric Abrahamsen <eric@ericabrahamsen.net>
To: Pip Cet <pipcet@gmail.com>
Cc: emacs-orgmode@gnu.org
Subject: Re: nested macro expansion?
Date: Wed, 19 Aug 2015 23:03:36 +0800	[thread overview]
Message-ID: <871tez1fsn.fsf@ericabrahamsen.net> (raw)
In-Reply-To: <CAOqdjBcvUisnc6T-4PqrJNQ7D8wp=nNBqXxCoUGwUJ6L99d1HA@mail.gmail.com> (Pip Cet's message of "Wed, 19 Aug 2015 14:43:41 +0000")


On 08/19/15 14:43 PM, Pip Cet wrote:
> Hi Eric,
> I know this doesn't answer your actual question about nested macro
> expansion, but writing some elisp might help you get the TIMESTAMP
> property, at least: both
>
> #+MACRO: bubba (eval (org-entry-get nil "TIMESTAMP"))
>
> and
>
> #+MACRO: bubba (eval (org-macro-expand "{{{property(TIMESTAMP)}}}"
> org-macro-templates))
>
> appear to produce the current timestamp, and both can be fed to
> another function, but not `format-time-string': the result of
> (org-entry-get...) is a string of the form "<2014-08-19>", which would
> need to be passed to `org-parse-time-string' first.

Hey, that does the trick, thank you! I guess I should have thought of
that.

Sure, the example as I gave it would have errored had it done anything,
but the main thing was just getting the right values in the right place.
Off to write the function...

Thanks again,
Eric

> On 8/19/15, Eric Abrahamsen <eric@ericabrahamsen.net> wrote:
>> Eric Abrahamsen <eric@ericabrahamsen.net> writes:
>>
>>> What I'm trying to do is have a macro that takes the computed TIMESTAMP
>>> property for an entry, and then runs it through a custom function that
>>> breaks out the start/end times, and produces a nicely formatted string
>>> from that.
>>>
>>> I don't see how to write a macro that feeds the value of a computed
>>> special property to a function.
>>>
>>> Right now my testing version looks like this:
>>>
>>> #+MACRO: bubba (eval (format-time-string "%Y" "$1"))
>>>
>>> and I'm calling it like this:
>>>
>>> {{{bubba({{{property(TIMESTAMP)}}})}}}
>>>
>>> That doesn't expand the interior "{{{property(TIMESTAMP)}}}" clause.
>>> What `format-time-string' ends up seeing is "{{{property(TIMESTAMP",
>>> without the final braces etc.
>>>
>>> Is there any way to get that value expanded first, and then passed to
>>> `format-time-string' (or, eventually, my custom function)?
>>
>> After googling for a while, I also thought this might work:
>>
>> #+MACRO: bubba (eval (format-time-string "%Y" property{{{TIMESTAMP}}}))
>>
>> {{{bubba}}}
>>
>> But the nested definition isn't expanded, either with or without quotes.
>>
>> E
>>
>>
>>

next prev parent reply	other threads:[~2015-08-19 15:03 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-19 11:28 nested macro expansion? Eric Abrahamsen
2015-08-19 11:33 ` Eric Abrahamsen
2015-08-19 14:43   ` Pip Cet
2015-08-19 15:03     ` Eric Abrahamsen [this message]
2015-08-19 20:18   ` Nicolas Goaziou
2015-08-20  1:24     ` Eric Abrahamsen

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