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I wrote a code that clones the current org buffer, performs a transformation of the links (which are org-ref citations) and then exports that temporary buffer. The problem is that the links in the #INCLUDE-ed files are not transformed. I would like to perform expansion of the #+INCLUDE keywords before putting the text into the temporary buffer (without affecting the original buffer, of course). How can I do that?

(The alternative, i.e. performing the transformation during the export of the links would result in several complications, so I do not want to pursue that path unless I must.)

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You could use the amusingly named function (org-org-export-as-org), which will export to a buffer named *Org ORG Export* with all the #+INCLUDE lines expanded. Then you could do your further processing and export from that buffer.

Full documentation for the function:

org-org-export-as-org is an interactive autoloaded compiled Lisp
function in ‘ox-org.el’.

(org-org-export-as-org &optional ASYNC SUBTREEP VISIBLE-ONLY BODY-ONLY
EXT-PLIST)

Export current buffer to an Org buffer.

If narrowing is active in the current buffer, only export its
narrowed part.

If a region is active, export that region.

A non-nil optional argument ASYNC means the process should happen
asynchronously.  The resulting buffer should be accessible
through the ‘org-export-stack’ interface.

When optional argument SUBTREEP is non-nil, export the sub-tree
at point, extracting information from the headline properties
first.

When optional argument VISIBLE-ONLY is non-nil, don’t export
contents of hidden elements.

When optional argument BODY-ONLY is non-nil, strip document
keywords from output.

EXT-PLIST, when provided, is a property list with external
parameters overriding Org default settings, but still inferior to
file-local settings.

Export is done in a buffer named "*Org ORG Export*", which will
be displayed when ‘org-export-show-temporary-export-buffer’ is
non-nil.
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  • Unfortunately, export to org does much more than what I need -- things like inserting #TITLE and #AUTHOR and transforming links of the form cite:something to links of the form [[#something][something]]... Jul 27 '17 at 13:05
  • You could use the BODY-ONLY argument to solve the first problem, and there is probably something you could put in EXT-PLIST to solve the second. But your solution with org-export-expand-include-keyword looks better if you have already gone to the trouble of cloning the buffer.
    – deprecated
    Jul 27 '17 at 14:05
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I am beginning to suspect that, in Emacs, the best way to find out answers is to look though the source code... Looking through the code of org-export-as reveals the answer: org-export-expand-include-keyword.

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