Re: ':post' Direct execution via Emacs Lisp

["Charles C. Berry" <ccberry@ucsd.edu>]

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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 ‘:post’
>>
>> The ‘:post’ 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 ‘*this*’ variable.  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