From 96af3ef46bb056e58206af77d3d37c5af2e43d7f Mon Sep 17 00:00:00 2001
From: Martin Kampas <martin.kampas@ubedi.net>
Date: Mon, 12 Feb 2024 13:24:54 +0100
Subject: [PATCH] org-bibtex-yank: Allow to populate existing item

Align with org-bibtex-create.

* lisp/ol-bibtex.el (org-bibtex-write): New optional argument nonew,
  similar to the existing nonew argument of org-bibtex-create
* lisp/ol-bibtex.el (org-bibtex-yank): New optional argument nonew,
  similar to the existing nonew argument of org-bibtex-create
---
 lisp/ol-bibtex.el | 39 ++++++++++++++++++++++-----------------
 1 file changed, 22 insertions(+), 17 deletions(-)

diff --git a/lisp/ol-bibtex.el b/lisp/ol-bibtex.el
index c5a950e2d..6ae4ae3cc 100644
--- a/lisp/ol-bibtex.el
+++ b/lisp/ol-bibtex.el
@@ -722,29 +722,31 @@ Return the number of saved entries."
   (interactive "fFile: ")
   (org-bibtex-read-buffer (find-file-noselect file 'nowarn 'rawfile)))
 
-(defun org-bibtex-write (&optional noindent)
+(defun org-bibtex-write (&optional noindent nonew)
   "Insert a heading built from the first element of `org-bibtex-entries'.
 When optional argument NOINDENT is non-nil, do not indent the properties
-drawer."
+drawer. If NONEW is t, add data to the headline of the entry at point."
   (interactive)
   (unless org-bibtex-entries
     (error "No entries in `org-bibtex-entries'"))
   (let* ((entry (pop org-bibtex-entries))
 	 (org-special-properties nil) ; avoids errors with `org-entry-put'
 	 (val (lambda (field) (cdr (assoc field entry))))
-	 (togtag (lambda (tag) (org-toggle-tag tag 'on))))
-    (org-insert-heading)
-    (insert (funcall org-bibtex-headline-format-function entry))
-    (insert "\n:PROPERTIES:\n")
-    (org-bibtex-put "TITLE" (funcall val :title) 'insert)
+	 (togtag (lambda (tag) (org-toggle-tag tag 'on)))
+         (insert-raw (not nonew)))
+    (unless nonew
+      (org-insert-heading)
+      (insert (funcall org-bibtex-headline-format-function entry))
+      (insert "\n:PROPERTIES:\n"))
+    (org-bibtex-put "TITLE" (funcall val :title) insert-raw)
     (org-bibtex-put org-bibtex-type-property-name
 		    (downcase (funcall val :type))
-                    'insert)
+                    insert-raw)
     (dolist (pair entry)
       (pcase (car pair)
 	(:title    nil)
 	(:type     nil)
-	(:key      (org-bibtex-put org-bibtex-key-property (cdr pair) 'insert))
+	(:key      (org-bibtex-put org-bibtex-key-property (cdr pair) insert-raw))
 	(:keywords (if org-bibtex-tags-are-keywords
 		       (dolist (kw (split-string (cdr pair) ", *"))
 			 (funcall
@@ -752,25 +754,28 @@ drawer."
 			  (replace-regexp-in-string
 			   "[^[:alnum:]_@#%]" ""
 			   (replace-regexp-in-string "[ \t]+" "_" kw))))
-		     (org-bibtex-put (car pair) (cdr pair) 'insert)))
-	(_ (org-bibtex-put (car pair) (cdr pair) 'insert))))
-    (insert ":END:\n")
+		     (org-bibtex-put (car pair) (cdr pair) insert-raw)))
+	(_ (org-bibtex-put (car pair) (cdr pair) insert-raw))))
+    (unless nonew
+      (insert ":END:\n"))
     (mapc togtag org-bibtex-tags)
     (unless noindent
       (org-indent-region
        (save-excursion (org-back-to-heading t) (point))
        (point)))))
 
-(defun org-bibtex-yank ()
-  "If kill ring holds a bibtex entry yank it as an Org headline."
-  (interactive)
-  (let (entry)
+(defun org-bibtex-yank (&optional nonew)
+  "If kill ring holds a bibtex entry yank it as an Org headline.
+If nonew is t, add data to the headline of the entry at point."
+  (interactive "P")
+  (let (entry
+        (noindent nonew))
     (with-temp-buffer
       (yank 1)
       (bibtex-mode)
       (setf entry (org-bibtex-read)))
     (if entry
-	(org-bibtex-write)
+	(org-bibtex-write noindent nonew)
       (error "Yanked text does not appear to contain a BibTeX entry"))))
 
 (defun org-bibtex-import-from-file (file)
-- 
2.43.0