From c52f96fe6fae23ff9d73651395ce8699a82284d1 Mon Sep 17 00:00:00 2001
From: John Kitchin <jkitchin@andrew.cmu.edu>
Date: Mon, 26 Jan 2015 15:49:49 -0500
Subject: [PATCH] make double prefix replace ref link

---
 org-ref.org | 51 ++++++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 40 insertions(+), 11 deletions(-)

diff --git a/org-ref.org b/org-ref.org
index 7d66a79..22cf65e 100644
--- a/org-ref.org
+++ b/org-ref.org
@@ -1145,7 +1145,8 @@ Another alternative ref insertion is to use helm.
 #+BEGIN_SRC emacs-lisp :tangle org-ref.el
 (defun org-ref-helm-insert-ref-link ()
   "Helm menu to insert ref links to labels in the document.
-Use C-u to insert a different kind of ref link."
+Use C-u to insert a different kind of ref link.
+C-u C-u to replace the current ref with selection"
   (interactive)
   (let* ((labels (org-ref-get-labels))
 	 (contexts (mapcar 'org-ref-get-label-context labels))
@@ -1165,14 +1166,44 @@ Use C-u to insert a different kind of ref link."
 							   ) "\n\n") label)))
 		      (action . (lambda (label)
 				  (switch-to-buffer ,cb)
-				  (insert
-				   (concat
-				    (if helm-current-prefix-arg
-					(helm :sources '((name . "Ref link types")
-							 (candidates . ("ref" "eqref" "pageref" "nameref"))
-							 (action . (lambda (x) x))))
-				      "ref")
-				    ":" label)))))))))
+
+				  (cond
+				   ;;  no prefix
+				   ((equal helm-current-prefix-arg nil)
+				     (insert
+				      (concat
+				       "ref:" label)))
+				   ;; one prefix, alternate ref link
+				   ((equal helm-current-prefix-arg '(4))
+				    (insert
+				     (concat
+				      (helm :sources '((name . "Ref link types")
+						       (candidates . ("ref" "eqref" "pageref" "nameref"))
+						       (action . (lambda (x) x))))
+				      ":" label)))
+				   ;; two prefixes, replace current label
+				   ((equal helm-current-prefix-arg '(16))
+				    ;; get link
+				    (let* ((object (org-element-context))
+					   (last-char (save-excursion
+							(goto-char (org-element-property :end object))
+							(backward-char)
+							(if (looking-at " ")
+							    " "
+							  ""))))
+				      (setf
+				       (buffer-substring
+					(org-element-property :begin object)
+					(org-element-property :end object))
+				       (concat
+					(replace-regexp-in-string
+					 (org-element-property :path object)
+					 label
+					 (org-element-property :raw-link object))
+					last-char))))))))))))
+
+
+
 #+END_SRC
 
 #+RESULTS:
@@ -3153,8 +3184,6 @@ C-u C-u will change the key at point to the selected keys.
 	     (-contains?
 	      org-ref-cite-types
 	      (org-element-property :type (org-element-context)))))
-      ;;(message-box "at end of a link")
-      ;; (goto-char (org-element-property :end object))
       (while (looking-back " ") (backward-char))
       (insert (concat "," (mapconcat 'identity keys ","))))
 
-- 
2.39.2