From mboxrd@z Thu Jan  1 00:00:00 1970
From: John Kitchin <jkitchin@andrew.cmu.edu>
Subject: Re: ':post' Direct execution via Emacs Lisp
Date: Fri, 27 Mar 2015 15:26:15 -0400
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To: "Charles C. Berry" <ccberry@ucsd.edu>
Cc: Daimrod <daimrod@gmail.com>, emacs-orgmode@gnu.org

that makes sense.

Charles C. Berry writes:

> On Fri, 27 Mar 2015, John Kitchin wrote:
>
>> I cannot see anyway to use direct execution of emacs lisp code in this
>> (and nothing I have tried actually works). Any emacs-lisp code seems to
>> get evaluated before running the block and *this* is not defined then.
>>
>
> The quoted part of the manual does suggest that lisp snippets should work
> like `:post (do-something *this*)'
>
> But perhaps *this* (pun intended) is what was meant: an emacs-lisp block
> can refer to `*this*' without needing to pass the value as a header
> argument.
>
>
> #+NAME: abc
> #+BEGIN_SRC emacs-lisp
> (concat *this* " and that")
> #+END_SRC
>
>
> #+BEGIN_SRC emacs-lisp :post abc()
> "T-H-I-S"
> #+END_SRC
>
> #+RESULTS:
> : T-H-I-S and that
>
>
>
> [snip]
>
>>> We can read in the manual:
>>> 14.8.2.25 =E2=80=98:post=E2=80=99
>>>
>>> The =E2=80=98:post=E2=80=99 header argument is used to post-process the=
 results of a
>>> code block execution.  When a post argument is given, the results of the
>>> code block will temporarily be bound to the =E2=80=98*this*=E2=80=99 va=
riable.  This
>>> variable may then be included in header argument forms such as those
>>> used in *note var:: header argument specifications allowing passing of
>>> results to other code blocks, or direct execution via Emacs Lisp.
>>>                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>
>
> Chuck

--
Professor John Kitchin
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