Hi Erik,
Erik Iverson <er...@ccbr.umn.edu> writes:
> Eric,
>
> As a follow-up on a related issue:
>
> What if I want to eval a code block for some side-effect, but
> *not* include code or results in export. This assumes I'm using
> :session.
>
> Is there a way to currently do that?
>
this should be possible using the :results silent header argument, for
example the following should give the desired behavior
--8<---------------cut here---------------start------------->8---
** eval for side effect on export
- one plus one
#+source: one-plus-one
#+begin_src emacs-lisp :exports none :results silent
(+ 1 1)
#+end_src
- plus one is
#+begin_src emacs-lisp :var two=one-plus-one :exports both
(+ 1 two)
#+end_src
--8<---------------cut here---------------end--------------->8---
Cheers -- Eric
>
> Setting :exports none seems to block evaluating of the code,
> can the :eval argument 'override' that so the block is
> eval'd, but no export is produced.
>
> In R, I currently can just put the last line of the block
> I want this behavior for as
>
> NULL
>
> with :exports results
>
> and it seems to do what I want. Just wondering if there was
> a more 'official' way?
>
> Here's a sample file that seems to do as I want, with the
> NULL trick. Just wonder if :eval can help at all.
>
> * I want only the 2nd block exported
>
> #+begin_src R :exports results :session
>
> x <- 2 + 3
> NULL
>
> #+end_src
>
> #+begin_src R :session :exports results
>
> x
>
> #+end_src
>
>
> Eric Schulte wrote:
>> Hi Paul,
>>
>> This is on the top of the stack for Babel bug fixes (see [1]), and I
>> hope to have a solution pushed up to the git repository soon. I'll
>> reply to this email when this issue is resolved.
>>
>> Thanks -- Eric
>>
>> Paul Sexton <psex...@xnet.co.nz> writes:
>>
>>> #+BEGIN_SRC R :eval query
>>> ...
>>> #+END_SRC
>>>
>>> If the above is in an org file, the user runs an export (C-c C-e), and the
>>> user
>>> types 'no' when asked whether to evaluate the code block, then the whole
>>> export
>>> process is aborted (no further blocks are processed and no export output is
>>> produced).
>>>
>>> The same thing happens with ':eval never'.
>>>
>>> Paul
>>>
>>>
>>>
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>>
>> Footnotes: [1]
>> http://eschulte.github.com/babel-dev/STARTED-How-to-quietly-exclude-block-from-evaluation-.html
>>
>>
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