Re: [O] [ANN] org-bibtex.el --- convert between Org headings and bibtex entries

[Eric Schulte]

"Alan E. Davis" <address@hidden> writes:

> Some notes on initially trying out this new tool.  I have some reservations
> as to whether it use it.  There are certain good reasons in its favor.
>
> This works to both store bibtex database entries and export to .bib files.
> I REALLY like the automagical harvesting of data using cb2Bib.  It is
> unique, and I don't see how to recruit it to produce a database in an org
> file, or pipe it into this org-bibtex tool.
>

Org-bibtex can be used to collect bibtex entries from .bib files, and
(with this most recent attached version) directly from the clipboard
with `org-bibtex-yank'.

Is there a more natural way that this could integrate with external
tools like cb2bib?  I've just now installed cb2bib, and I'm not sure I
fully grasp its usage.

>
> The need to represent the bibtex database entry as a PROPERTY list would
> appear to me to limit its usefulness to me.
>

in any particular way?

>
> A nit: I would prefer to be free to enter any optional field type I wished,
> when I am entering the data.

It is possible to add arbitrary properties to a headline with
`org-set-property'.  Or you could customize the variables holding bibtex
field and entry types.  For example to add a personal :mynotes field to
every bibtex type just execute the following elisp code (or add it to
your configuration).  You will then be prompted for a mynotes field on
every bibtex entry.  You could also change the :required keyword to add
your field as an option field.

#+begin_src emacs-lisp
  (dolist (type org-bibtex-types)
    (push :mynotes (cdr (assoc :required (cdr type)))))

  (push (cons :mynotes "My personal field for notes") org-bibtex-fields)
#+end_src

> Of course, the tool as it stands helped me to filter out duplicate
> fields and unused optional fields from the one bibtex entry I tried
> using org-bibtex-read: the output of org-bibtex-write was cleaner, and
> correctly incorporated aligning tabs where I'd carelessly left them
> out.)
>

This functionality is all due to the formatting functions provided by
the existing bibtex.el package.

>
> My INPUT ENTRY
>
> @INCOLLECTION{AED-IER-CR,
>   author = {Junior Noitall},
>   title = {Specific disruption strategies},
>   booktitle = {How to annoy the teacher},
>   publisher = {Noitall Notes},
>   year = {2011},
>   editor = {Senior Noitall},
>   chapter = {13},
>   pages = {218--243},
>   address = {Concentric Orbit},
>   altauthor = {John Smith},
>   alteditor = {Carl Pumpkin},
>   isbn = {1-8777753-31-9},
>   optaddress = {Room X777},
>   optpages = {\frac{1}{2}}
> }
>
> In the following output, the isbn field is missing.
>
> OUTPUT from org-bibtex-write
>
> @incollection{AED-IER-CR,
>   author =     {Junior Noitall},
>   title =     {Specific disruption strategies},
>   booktitle =     {How to annoy the teacher},
>   publisher =     {Noitall Notes},
>   year =     2011,
>   editor =     {Senior Noitall},
>   type =     {incollection},
>   chapter =     13,
>   pages =     {218--243},
>   address =     {Concentric Orbit}
> }
>
>
> I understand I may add to the types variable.  When using org-bibtex-create,
> I can enter any arbitrary field as a PROPERTY; however, org-bibtex ignores
> anything outside of the universe it knows about.  Would it be bad practice
> to allow the export of any arbitrary field type one has recorded?

If a type is added as with the code given above, then it will be
exported to .bib files along with the default fields.

> I think the emacs bibtex-mode may recognize erroneous bibtex entries.
> Somewhere there is code that does that.

I do not know if bibtex-mode does that or not.  I think that bibtex
itself is supposed to simply ignore any fields which it does not
recognize allowing extensibility.

> It would be a huge and excellent addition to be able to pass other
> types, while checking for proper formatting.  Bibtex itself, and the
> .bst files (at least for bibtex itself; I don't know about biblatex,
> etc.) will cherry pick the needed fields.  Am I wrong about this?
>

The above sounds correct to me.

Given that org properties will likely contain non-bibtex content, I
wouldn't want the default behavior to be exporting every property entry
to bibtex.  However if the above solution of adding to the
org-bibtex-types/fields variables is not sufficient, it shouldn't be
difficult to change the org-bibtex command so that if it is called with
a prefix argument it will export *all* properties to the .bib file.

>
>
> I am confused by the duplication of file names, though I can see that at
> some point one of the two will lose.  (Gauss's law of competitive exclusion,
> referring to the biological case of two species occupying the same
> ecological niche).
>

I think that rather than competing these files may be merging into a
single file (as with the attached patch).  However this remains to be
seen.

Thanks for the feedback and suggestions -- Eric

>
>
> Alan Davis

>From c9e76873e346e3eaf0a99c07458dfac28200490b Mon Sep 17 00:00:00 2001
From: Eric Schulte <address@hidden>
Date: Sat, 23 Apr 2011 08:05:08 -0600
Subject: [PATCH] org-bibtex: translating between Org-mode headings and Bibtex 
entries

* lisp/org-bibtex.el: Updating Copyright dates, author information,
  commentary and history notes.
  (org-bibtex-types): List of bibtex types with descriptions and
  required and optional fields.
  (org-bibtex-fields): List of bibtex fields with descriptions.
  (*org-bibtex-entries*): Special variable to hold parsed bibtex
  entries.
  (org-bibtex-autogen-keys): Custom variable controlling whether
  bibtex keys are automatically generated
  (org-bibtex-prefix): Custom variable allowing use of optional prefix
  for bibtex properties in Org-mode headlines.
  (org-bibtex-get): Helper function for accessing bibtex elements of a
  property list.
  (org-bibtex-put): Helper function for inserting bibtex element into
  a property list.
  (org-bibtex-headline): Return a bibtex entry of the given headline
  as a string.
  (org-bibtex-ask): Prompt the user to fill in the value of a bibtex
  field.
  (org-bibtex-autokey): Generate a bibtex key for the current
  headline.
  (org-bibtex-fleshout): Fill in missing bibtex properties of the
  current headline.
  (org-bibtex): Export the current Org-mode buffer to a bibtex buffer.
  (org-bibtex-check): Check that all bibtex properties are present in
  the current headline.
  (org-bibtex-check-all): Check all headlines in the current buffer.
  (org-bibtex-create): Create a new bibtex headline at the current
  level.
  (org-bibtex-read): Read the current bibtex entry from a bibtex file.
  (org-bibtex-write): Write the most recently read bibtex entry into
  an Org-mode file.
---
 lisp/org-bibtex.el |  331 +++++++++++++++++++++++++++++++++++++++++++++++++---
 1 files changed, 317 insertions(+), 14 deletions(-)

diff --git a/lisp/org-bibtex.el b/lisp/org-bibtex.el
index b7b7416..818be67 100644
--- a/lisp/org-bibtex.el
+++ b/lisp/org-bibtex.el
@@ -1,9 +1,10 @@
 ;;; org-bibtex.el --- Org links to BibTeX entries
 ;;
-;; Copyright (C) 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
 ;;
 ;; Author: Bastien Guerry <bzg at altern dot org>
 ;;         Carsten Dominik <carsten dot dominik at gmail dot com>
+;;         Eric Schulte <schulte dot eric at gmail dot com>
 ;; Keywords: org, wp, remember
 ;; Version: 7.5
 ;;
@@ -66,12 +67,30 @@
 ;; =====================================================================
 ;; * READ <== [point here]
 ;;
-;; [[file:/file.bib::dolev83][Dolev & Yao 1983: security of public key 
protocols]]
+;; [[file:file.bib::dolev83][Dolev & Yao 1983: security of public key 
protocols]]
 ;;
 ;; Danny Dolev and Andrew C. Yao (1983): On the security of public-key 
protocols
 ;; In IEEE Transaction on Information Theory, 198--208.
 ;; =====================================================================
 ;;
+;; Additionally, the following functions are now available for storing
+;; bibtex entries within Org-mode documents.
+;;
+;; - Run `org-bibtex' to export the current file to a .bib.
+;;
+;; - Run `org-bibtex-check' or `org-bibtex-check-all' to check and
+;;   fill in missing field of either the current, or all headlines
+;;
+;; - Run `org-bibtex-create' to add a bibtex entry
+;;
+;; - Use `org-bibtex-read' to read a bibtex entry after `point' or in
+;;   the active region, then call `org-bibtex-write' in a .org file to
+;;   insert a heading for the read bibtex entry
+;;
+;; - All Bibtex information is taken from the document compiled by
+;;   Andrew Roberts from the Bibtex manual, available at
+;;   http://www.andy-roberts.net/misc/latex/sessions/bibtex/bibentries.pdf
+;;
 ;;; History:
 ;;
 ;; The link creation part has been part of Org-mode for a long time.
@@ -80,12 +99,17 @@
 ;; of Austin Frank: http://article.gmane.org/gmane.emacs.orgmode/4112
 ;; and then implemented by Bastien Guerry.
 ;;
+;; Eric Schulte eventually added the functions for translating between
+;; Org-mode headlines and Bibtex entries, and for fleshing out the Bibtex
+;; fields of existing Org-mode headlines.
+;;
 ;; Org-mode loads this module by default - if this is not what you want,
 ;; configure the variable `org-modules'.
 
 ;;; Code:
 
 (require 'org)
+(require 'bibtex)
 
 (defvar description nil) ; dynamically scoped from org.el
 
@@ -93,21 +117,209 @@
 (declare-function bibtex-generate-autokey "bibtex" ())
 (declare-function bibtex-parse-entry "bibtex" (&optional content))
 (declare-function bibtex-url "bibtex" (&optional pos no-browse))
+(declare-function longlines-mode "longlines" (&optional arg))
+
+
+;;; Bibtex data
+(defvar org-bibtex-types
+  '((:article
+     (:description . "An article from a journal or magazine")
+     (:required :author :title :journal :year)
+     (:optional :volume :number :pages :month :note))
+    (:book
+     (:description . "A book with an explicit publisher")
+     (:required (:editor :author) :title :publisher :year)
+     (:optional (:volume :number) :series :address :edition :month :note))
+    (:booklet
+     (:description . "A work that is printed and bound, but without a named 
publisher or sponsoring institution.")
+     (:required :title)
+     (:optional :author :howpublished :address :month :year :note))
+    (:conference
+     (:description . "")
+     (:required :author :title :booktitle :year)
+     (:optional :editor :pages :organization :publisher :address :month :note))
+    (:inbook
+     (:description . "A part of a book, which may be a chapter (or section or 
whatever) and/or a range of pages.")
+     (:required (:author :editor) :title (:chapter :pages) :publisher :year)
+     (:optional (:volume :number) :series :type :address :edition :month 
:note))
+    (:incollection
+     (:description . "A part of a book having its own title.")
+     (:required :author :title :booktitle :publisher :year)
+     (:optional :editor (:volume :number) :series :type :chapter :pages 
:address :edition :month :note))
+    (:inproceedings
+     (:description . "An article in a conference proceedings")
+     (:required :author :title :booktitle :year)
+     (:optional :editor (:volume :number) :series :pages :address :month 
:organization :publisher :note))
+    (:manual
+     (:description . "Technical documentation.")
+     (:required :title)
+     (:optional :author :organization :address :edition :month :year :note))
+    (:mastersthesis
+     (:description . "A Master’s thesis.")
+     (:required :author :title :school :year)
+     (:optional :type :address :month :note))
+    (:misc
+     (:description . "Use this type when nothing else fits.")
+     (:required)
+     (:optional :author :title :howpublished :month :year :note))
+    (:phdthesis
+     (:description . "A PhD thesis.")
+     (:required :author :title :school :year)
+     (:optional :type :address :month :note))
+    (:proceedings
+     (:description . "The proceedings of a conference.")
+     (:required :title :year)
+     (:optional :editor (:volume :number) :series :address :month 
:organization :publisher :note))
+    (:techreport
+     (:description . "A report published by a school or other institution.")
+     (:required :author :title :institution :year)
+     (:optional :type :address :month :note))
+    (:unpublished
+     (:description . "A document having an author and title, but not formally 
published.")
+     (:required :author :title :note)
+     (:optional :month :year)))
+  "Bibtex entry types with required and optional parameters.")
+
+(defvar org-bibtex-fields
+  '((:address      . "Usually the address of the publisher or other type of 
institution. For major publishing houses, van Leunen recommends omitting the 
information entirely.  For small publishers, on the other hand, you can help 
the reader by giving the complete address.")
+    (:annote       . "An annotation. It is not used by the standard 
bibliography styles, but may be used by others that produce an annotated 
bibliography.")
+    (:author       . "The name(s) of the author(s), in the format described in 
the LaTeX book.  Remember, all names are separated with the and keyword, and 
not commas.")
+    (:booktitle    . "Title of a book, part of which is being cited. See the 
LaTeX book for how to type titles. For book entries, use the title field 
instead.")
+    (:chapter      . "A chapter (or section or whatever) number.")
+    (:crossref     . "The database key of the entry being cross referenced.")
+    (:edition      . "The edition of a book for example, 'Second'. This should 
be an ordinal, and should have the first letter capitalized, as shown here; the 
standard styles convert to lower case when necessary.")
+    (:editor       . "Name(s) of editor(s), typed as indicated in the LaTeX 
book. If there is also an author field, then the editor field gives the editor 
of the book or collection in which the reference appears.")
+    (:howpublished . "How something strange has been published. The first word 
should be capitalized.")
+    (:institution  . "The sponsoring institution of a technical report.")
+    (:journal      . "A journal name.")
+    (:key          . "Used for alphabetizing, cross-referencing, and creating 
a label when the author information is missing. This field should not be 
confused with the key that appears in the \cite command and at the beginning of 
the database entry.")
+    (:month        . "The month in which the work was published or, for an 
unpublished work, in which it was written. You should use the standard 
three-letter abbreviation,")
+    (:note         . "Any additional information that can help the reader. The 
first word should be capitalized.")
+    (:number       . "Any additional information that can help the reader. The 
first word should be capitalized.")
+    (:organization . "The organization that sponsors a conference or that 
publishes a manual.")
+    (:pages        . "One or more page numbers or range of numbers, such as 
42-111 or 7,41,73-97 or 43+ (the ‘+’ in this last example indicates pages 
following that don’t form simple range). BibTEX requires double dashes for page 
ranges (--).")
+    (:publisher    . "The publisher’s name.")
+    (:school       . "The name of the school where a thesis was written.")
+    (:series       . "The name of a series or set of books. When citing an 
entire book, the the title field gives its title and an optional series field 
gives the name of a series or multi-volume set in which the book is published.")
+    (:title        . "The work’s title, typed as explained in the LaTeX book.")
+    (:type         . "The type of a technical report for example, 'Research 
Note'.")
+    (:volume       . "The volume of a journal or multi-volume book.")
+    (:year         . "The year of publication or, for an unpublished work, the 
year it was written.  Generally it should consist of four numerals, such as 
1984, although the standard styles can handle any year whose last four 
nonpunctuation characters are numerals, such as '(about 1984)'"))
+  "Bibtex fields with descriptions.")
+
+(defvar *org-bibtex-entries* nil
+  "List to hold parsed bibtex entries.")
+
+(defcustom org-bibtex-autogen-keys nil
+  "Set to a truthy value to use `bibtex-generate-autokey' to generate keys."
+  :group 'org-bibtex
+  :type  'boolean)
+
+(defcustom org-bibtex-prefix nil
+  "Optional prefix for all bibtex property names.
+For example setting to 'BIB_' would allow interoperability with fireforg."
+  :group 'org-bibtex
+  :type  'string)
+
+
+;;; Utility functions
+(defun org-bibtex-get (property)
+  (or (org-entry-get (point) (upcase property))
+      (org-entry-get (point) (concat org-bibtex-prefix (upcase property)))))
 
+(defun org-bibtex-put (property value)
+  (let ((prop (upcase (if (keywordp property)
+                          (substring (symbol-name property) 1)
+                        property))))
+    (org-set-property
+     (concat (unless (string= "CUSTOM_ID" prop) org-bibtex-prefix) prop)
+     value)))
+
+(defun org-bibtex-headline ()
+  "Return a bibtex entry of the given headline as a string."
+  (flet ((get (key lst) (cdr (assoc key lst)))
+         (to-k (string) (intern (concat ":" string)))
+         (from-k (key) (substring (symbol-name key) 1))
+         (flatten (&rest lsts)
+                  (apply #'append (mapcar
+                                   (lambda (e)
+                                     (if (listp e) (apply #'flatten e) (list 
e)))
+                                   lsts))))
+    (let ((notes (buffer-string))
+          (id (org-bibtex-get "custom_id"))
+          (type (org-bibtex-get "type")))
+      (when type
+        (let ((entry (format
+                      "@%s{%s,\n%s\n}\n" type id
+                      (mapconcat
+                       (lambda (pair) (format "  %s={%s}" (car pair) (cdr 
pair)))
+                       (remove nil
+                        (mapcar
+                         (lambda (field)
+                           (let ((value (or (org-bibtex-get (from-k field))
+                                            (and (equal :title field)
+                                                 (org-get-heading)))))
+                             (when value (cons (from-k field) value))))
+                         (flatten
+                          (get :required (get (to-k type) org-bibtex-types))
+                          (get :optional (get (to-k type) org-bibtex-types)))))
+                       ",\n"))))
+          (with-temp-buffer
+            (insert entry)
+            (bibtex-reformat) (buffer-string)))))))
+
+(defun org-bibtex-ask (field)
+  (unless (assoc field org-bibtex-fields)
+    (error "field:%s is not known" field))
+  (save-window-excursion
+    (let* ((name (substring (symbol-name field) 1))
+          (buf-name (format "*Bibtex Help %s*" name)))
+      (with-output-to-temp-buffer buf-name
+       (princ (cdr (assoc field org-bibtex-fields))))
+      (with-current-buffer buf-name (longlines-mode t))
+      (org-fit-window-to-buffer (get-buffer-window buf-name))
+      ((lambda (result) (when (> (length result) 0) result))
+       (read-from-minibuffer (format "%s: " name))))))
+
+(defun org-bibtex-autokey ()
+  "Generate an autokey for the current headline"
+  (org-bibtex-put "CUSTOM_ID"
+                  (if org-bibtex-autogen-keys
+                      (let ((entry (org-bibtex-headline)))
+                        (with-temp-buffer
+                          (insert entry)
+                          (bibtex-generate-autokey)))
+                    (read-from-minibuffer "id: "))))
+
+(defun org-bibtex-fleshout (type &optional optional)
+  "Fleshout the current heading, ensuring that all required fields are present.
+With optional argument OPTIONAL, also prompt for optional fields."
+  (flet ((get (key lst) (cdr (assoc key lst)))
+        (keyword (name) (intern (concat ":" (downcase name))))
+         (name (keyword) (upcase (substring (symbol-name keyword) 1))))
+    (dolist (field (append
+                   (remove :title (get :required (get type org-bibtex-types)))
+                   (when optional (get :optional (get type 
org-bibtex-types)))))
+      (when (consp field) ; or'd pair of fields e.g., (:editor :author)
+        (let ((present (first (remove nil
+                                (mapcar
+                                 (lambda (f) (when (org-bibtex-get (name f)) 
f))
+                                 field)))))
+          (setf field (or present (keyword (org-icompleting-read
+                                           "Field: " (mapcar #'name 
field)))))))
+      (let ((name (name field)))
+        (unless (org-bibtex-get name)
+          (let ((prop (org-bibtex-ask field)))
+            (when prop (org-bibtex-put name prop)))))))
+  (when (and type (assoc type org-bibtex-types)
+             (not (org-bibtex-get "CUSTOM_ID")))
+    (org-bibtex-autokey)))
+
+
+;;; Bibtex link functions
 (org-add-link-type "bibtex" 'org-bibtex-open)
 (add-hook 'org-store-link-functions 'org-bibtex-store-link)
 
-;; (defun org-bibtex-publish (path)
-;;   "Build the description of the BibTeX entry for publishing."
-;;   (let* ((search (when (string-match "::\\(.+\\)\\'" path)
-;;                (match-string 1 path)))
-;;      (path (substring path 0 (match-beginning 0)))
-;;      key)
-;;     (with-temp-buffer
-;;       (org-open-file path t nil search)
-;;       (setq key (org-create-file-search-functions)))
-;;     (or description key)))
-
 (defun org-bibtex-open (path)
   "Visit the bibliography entry on PATH."
   (let* ((search (when (string-match "::\\(.+\\)\\'" path)
@@ -192,12 +404,103 @@
            (goto-char p)
            (bibtex-url)))
       (recenter 0))  ; Move entry start to beginning of window
-  ;; return t to indicate that the search is done.
+    ;; return t to indicate that the search is done.
     t))
 
 ;; Finally add the link search function to the right hook.
 (add-hook 'org-execute-file-search-functions 
'org-execute-file-search-in-bibtex)
 
+
+;;; Bibtex <-> Org-mode headline translation functions
+(defun org-bibtex ()
+  "Export each headline in the current file to a bibtex entry.
+Headlines are exported using `org-bibtex-export-headline'."
+  (interactive)
+  (let ((bibtex-entries (remove nil (org-map-entries #'org-bibtex-headline))))
+    (with-temp-file (concat (file-name-sans-extension (buffer-file-name)) 
".bib")
+      (insert (mapconcat #'identity bibtex-entries "\n")))))
+
+(defun org-bibtex-check (&optional optional)
+  "Check the current headline for required fields.
+With prefix argument OPTIONAL also prompt for optional fields."
+  (interactive "P")
+  (save-restriction
+    (org-narrow-to-subtree)
+    (let ((type ((lambda (name) (when name (intern (concat ":" name))))
+                 (org-bibtex-get "TYPE"))))
+      (when type (org-bibtex-fleshout type optional)))))
+
+(defun org-bibtex-check-all (&optional optional)
+  "Check all headlines in the current file.
+With prefix argument OPTIONAL also prompt for optional fields."
+  (interactive) (org-map-entries (lambda () (org-bibtex-check optional))))
+
+(defun org-bibtex-create (type)
+  "Create a new entry at the given level."
+  (interactive
+   (list (org-icompleting-read
+          "Type: "
+         (mapcar (lambda (type) (symbol-name (car type))) org-bibtex-types))))
+  (let ((type (if (keywordp type) type (intern type))))
+    (unless (assoc type org-bibtex-types)
+      (error "type:%s is not known" type))
+    (org-insert-heading)
+    (let ((title (org-bibtex-ask :title)))
+      (insert title) (org-bibtex-put "TITLE" title))
+    (org-bibtex-put "TYPE" (substring (symbol-name type) 1))
+    (org-bibtex-fleshout type)))
+
+(defun org-bibtex-read ()
+  "Read a bibtex entry and save to `*org-bibtex-entries*'.
+This uses `bibtex-parse-entry'."
+  (interactive)
+  (flet ((keyword (str) (intern (concat ":" (downcase str))))
+         (clean-space (str) (replace-regexp-in-string
+                             "[[:space:]\n\r]+" " " str))
+         (strip-delim (str)         ; strip enclosing "..." and {...}
+                     (dolist (pair '((34 . 34) (123 . 125) (123 . 125)))
+                       (when (and (= (aref str 0) (car pair))
+                                  (= (aref str (1- (length str))) (cdr pair)))
+                         (setf str (subseq str 1 (1- (length str)))))) str))
+    (push (mapcar
+           (lambda (pair)
+             (cons (let ((field (keyword (car pair))))
+                     (case field
+                       (:=type= :type)
+                       (:=key= :key)
+                       (otherwise field)))
+                   (clean-space (strip-delim (cdr pair)))))
+           (save-excursion (bibtex-beginning-of-entry) (bibtex-parse-entry)))
+          *org-bibtex-entries*)))
+
+(defun org-bibtex-write ()
+  "Insert a heading built from the first element of `*org-bibtex-entries*'."
+  (interactive)
+  (when (= (length *org-bibtex-entries*) 0)
+    (error "No entries in `*org-bibtex-entries*'."))
+  (let ((entry (pop *org-bibtex-entries*))
+       (org-special-properties nil)) ; avoids errors with `org-entry-put'
+    (flet ((get (field) (cdr (assoc field entry))))
+      (org-insert-heading)
+      (insert (get :title))
+      (org-bibtex-put "TITLE" (get :title))
+      (org-bibtex-put "TYPE"  (downcase (get :type)))
+      (dolist (pair entry)
+        (case (car pair)
+          (:title    nil)
+          (:type     nil)
+          (:key      (org-bibtex-put "CUSTOM_ID" (cdr pair)))
+          (otherwise (org-bibtex-put (car pair)  (cdr pair))))))))
+
+(defun org-bibtex-yank ()
+  "If kill ring holds a bibtex entry yank it as an Org-mode headline."
+  (interactive)
+  (let (entry)
+    (with-temp-buffer (yank 1) (setf entry (org-bibtex-read)))
+    (if entry
+       (org-bibtex-write)
+      (error "yanked text does not appear to contain a bibtex entry"))))
+
 (provide 'org-bibtex)
 
 ;; arch-tag: 83987d5a-01b8-41c7-85bc-77700f1285f5
-- 
1.7.1

-- 
Eric Schulte
http://cs.unm.edu/~eschulte/