Re: org babel before excute hook

[Henning Redestig <henning.red@gmail.com>]

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Is it possible to add a function to org-ctrl-c-ctrl-c-hook without patching
ob-core.el? If I just add something like

(add-hook 'org-ctrl-c-ctrl-c-hook 'org-babel-stop-if-file-collision)

in my .emacs I notice that my addition gets overwritten later via the
autoloads (I think) that are defined in ob-core.el..



2013/10/12 Charles Berry <ccberry@ucsd.edu>

> John Kitchin <jkitchin <at> andrew.cmu.edu> writes:
>
> >
> >
> >
> > I have a related kind of problem. When preparing notes
> > for a class, I may end up with 70 code blocks in an org file, many of
> > which create graphics. I am always worried about accidentally using the
> > same filename and overwriting a graphic from an earlier block. A unique,
> >  but reproducible filename would be sufficient for my needs.
> >
>
> Header arg values can be elisp calls. You can use `make-temp-file'.
>
> So every time this block is executed, a new file is created and the
> file link is added to the results.
>
> #+BEGIN_SRC R :results output append :file (make-temp-file "temp")
> cat(date(),"\n")
> #+END_SRC
>
> #+RESULTS:
> [[file:/var/folders/kb/2hchpbyj7lb6z76l0q73w_fh0000gn/T/temp302IjV]]
> [[file:/var/folders/kb/2hchpbyj7lb6z76l0q73w_fh0000gn/T/temp3028Lu]]
>
> See `temporary-file-directory', too, if you want to use this, as the
> default may not be what you intend.
>
>
> You might want to use this:
>
> #+BEGIN_SRC emacs-lisp
>   (defun local-tfile (file)
>     (let ((temporary-file-directory "."))
>       (make-temp-file file)))
> #+END_SRC
>
> Then the files go in the local directory when this is executed:
>
> #+BEGIN_SRC R :file (local-tfile "tfile") :results output append
> cat(date(),"\n")
> #+END_SRC
>
> You might not want `append' in this case.
>
>
> HTH,
>
> Chuck
>
> [rest deleted]
>
>
>
>
>

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