Re: [BABEL] Redirect stderr to stdout?

[Viktor Rosenfeld <listuser36@googlemail.com>]

Hi Eric,

Eric Schulte wrote:

> Currently the only action Babel takes with STDERR is to display it in a
> pop-up buffer when code block evaluation fails.  

On my system (OS X) the buffer does not popup. I just tried

#+BEGIN_SRC sh
echo foo 1>&2
#+END_SRC

in Aquamacs and Cocoa Emacs. Strangely, the output seems to be lost
entirely. Normally, stderr is captured in another buffer which I have to
open manually.

> It would certainly be
> possible to add :results header argument to incorporate STDERR into
> results (and this desire has been expressed previously).  Reasonable
> combination options would likely include (at least) the following.
> 
> | stderr-only | return stderr instead of stdout    |
> | 2>&1        | interleave stderr and stdout       |
> | concat      | add stderr to the end of stdout    |
> | list        | return a list of stderr and stdotu |
> 
> The best (read simple and extensible) implementation and syntax for this
> behavior is not obvious to me (and I simply don't have time).  If you
> (or anyone on the list) have any interest in hacking elisp code the
> place to start would be `org-babel-eval' for a serious implementation,
> or an quick hack may be possible through customization of the
> `org-babel-eval-error-notify' function.
> 
> Hope this helps.

Okay, thanks. My elisp skills are very rudimentary and this is beyond
me. Maybe somebody else will pick it up if the interest is big enough.

Cheers,
Viktor