Refactor attachment path expansion

* lisp/org-attach.el (org-attach-link-expand): New function for link
  element expansion.

* lisp/org-element.el (org-element-link-parser): Remove info about
  expanded attachment paths from link elements.

* lisp/ol.el (org-link-open)
* lisp/ox-texinfo.el (org-texinfo-link)
* lisp/ox-odt.el (org-odt-link)
* lisp/ox-md.el (org-md-link)
* lisp/ox-man.el (org-man-link)
* lisp/ox-latex.el (org-latex--inline-image, org-latex-link)
* lisp/ox-html.el (org-html-link)
* lisp/ox-ascii.el (org-ascii-link): Refactor to use new link
  expansion function from org-attach.el instead of (now removed)
  custom link property from org-element.el.

lisp/ol.el

@@ -75,6 +75,7 @@
 (declare-function org-src-source-type "org-src" ())
 (declare-function org-time-stamp-format "org" (&optional long inactive))
 (declare-function outline-next-heading "outline" ())
+(declare-function org-attach-link-expand "org-attach" (link &optional buffer-or-name))
 
 
 ;;; Customization
@@ -934,7 +935,7 @@ a \"file\" link."
     (cond
      ((member type '("file" "attachment"))
       (when (string= type "attachment")
-	(setq path (org-element-property :attachment-path link)))
+	(setq path (org-attach-link-expand link)))
       (if (string-match "[*?{]" (file-name-nondirectory path))
 	  (dired path)
 	;; Look into `org-link-parameters' in order to find

lisp/org-attach.el

@@ -40,6 +40,7 @@
 (require 'org-id)
 
 (declare-function dired-dwim-target-directory "dired-aux")
+(declare-function org-element-property "org-element" (property element))
 
 (defgroup org-attach nil
   "Options concerning attachments in Org mode."
@@ -650,6 +651,21 @@ See `org-attach-open'."
 Basically, this adds the path to the attachment directory."
   (expand-file-name file (org-attach-dir)))
 
+(defun org-attach-link-expand (link &optional buffer-or-name)
+  "Return the full path to the attachment in the LINK element.
+Takes LINK which is a link element, as defined by
+`org-element-link-parser'.  If LINK `:type' is attachment the
+full path to the attachment is expanded and returned.  Otherwise,
+return nil.  If BUFFER-OR-NAME is specified, LINK is expanded in
+that buffer, otherwise current buffer is assumed."
+  (let ((type (org-element-property :type link))
+	(file (org-element-property :path link))
+	(pos (org-element-property :begin link)))
+    (when (string= type "attachment")
+      (with-current-buffer (or buffer-or-name (current-buffer))
+	(goto-char pos)
+	(org-attach-expand file)))))
+
 (org-link-set-parameters "attachment"
                          :complete #'org-attach-complete-link)
 

lisp/org-element.el

@@ -3116,11 +3116,7 @@ When at a link, return a list whose car is `link' and cdr a plist
 with `:type', `:path', `:format', `:raw-link', `:application',
 `:search-option', `:begin', `:end', `:contents-begin',
 `:contents-end' and `:post-blank' as keywords.  Otherwise, return
-nil.  Additionally, in the context of attachment links one
-further property, `:attachment-path' is set.  That property
-contains the attachment link expanded into a full filesystem
-path.
-
+nil.
 
 Assume point is at the beginning of the link."
   (catch 'no-object
@@ -3229,27 +3225,18 @@ Assume point is at the beginning of the link."
 	(when trans
 	  (setq type (car trans))
 	  (setq path (cdr trans))))
-      (let ((link
-	     (list 'link
-		   (list :type type
-			 :path path
-			 :format format
-			 :raw-link (or raw-link path)
-			 :application application
-			 :search-option search-option
-			 :begin begin
-			 :end end
-			 :contents-begin contents-begin
-			 :contents-end contents-end
-			 :post-blank post-blank))))
-	;; Add additional type specific properties for link types that
-	;; need it
-	(when (string= type "attachment")
-	  (org-element-put-property
-	   link :attachment-path
-	   (file-relative-name
-	    (org-attach-expand path))))
-	link))))
+      (list 'link
+	    (list :type type
+		  :path path
+		  :format format
+		  :raw-link (or raw-link path)
+		  :application application
+		  :search-option search-option
+		  :begin begin
+		  :end end
+		  :contents-begin contents-begin
+		  :contents-end contents-end
+		  :post-blank post-blank)))))
 
 (defun org-element-link-interpreter (link contents)
   "Interpret LINK object as Org syntax.

lisp/ox-ascii.el

@@ -34,6 +34,7 @@
 ;;; Function Declarations
 
 (declare-function aa2u "ext:ascii-art-to-unicode" ())
+(declare-function org-attach-link-expand "org-attach" (link &optional buffer-or-name))
 
 ;;; Define Back-End
 ;;
@@ -1573,7 +1574,7 @@ INFO is a plist holding contextual information."
 	 (raw-path (org-element-property :path link))
 	 (path (cond
 		((string= type "attachment")
-		 (setq raw-path (org-element-property :attachment-path link))
+		 (setq raw-path (org-attach-link-expand link))
 		 (concat type ":" raw-path))
 		(t (concat type ":" raw-path)))))
     (cond

lisp/ox-html.el

@@ -42,6 +42,7 @@
 (declare-function org-id-find-id-file "org-id" (id))
 (declare-function htmlize-region "ext:htmlize" (beg end))
 (declare-function mm-url-decode-entities "mm-url" ())
+(declare-function org-attach-link-expand "org-attach" (link &optional buffer-or-name))
 
 (defvar htmlize-css-name-prefix)
 (defvar htmlize-output-type)
@@ -3074,7 +3075,7 @@ INFO is a plist holding contextual information.  See
 	    (url-encode-url (concat type ":" raw-path)))
 	   ((member type '("file" "attachment"))
 	    (when (string= type "attachment")
-	      (setq raw-path (org-element-property :attachment-path link)))
+	      (setq raw-path (org-attach-link-expand link)))
 	    ;; During publishing, turn absolute file names belonging
 	    ;; to base directory into relative file names.  Otherwise,
 	    ;; append "file" protocol to absolute file name.

lisp/ox-latex.el

@@ -32,6 +32,8 @@
 
 ;;; Function Declarations
 
+(declare-function org-attach-link-expand "org-attach" (link &optional buffer-or-name))
+
 (defvar org-latex-default-packages-alist)
 (defvar org-latex-packages-alist)
 (defvar orgtbl-exp-regexp)
@@ -2360,7 +2362,7 @@ LINK is the link pointing to the inline image.  INFO is a plist
 used as a communication channel."
   (let* ((parent (org-export-get-parent-element link))
 	 (path (let ((raw-path (if (string= (org-element-property :type link) "attachment")
-				   (org-element-property :attachment-path link)
+				   (org-attach-link-expand link)
 				 (org-element-property :path link))))
 		 (if (not (file-name-absolute-p raw-path)) raw-path
 		   (expand-file-name raw-path))))
@@ -2528,7 +2530,7 @@ INFO is a plist holding contextual information.  See
 		       (concat type ":" raw-path))
 		      ((member type '("file" "attachment"))
 		       (when (string= type "attachment")
-			 (setq raw-path (org-element-property :attachment-path link)))
+			 (setq raw-path (org-attach-link-expand link)))
 		       (org-export-file-uri raw-path))
 		      (t
 		       raw-path)))))

lisp/ox-man.el

@@ -42,6 +42,8 @@
 
 ;;; Function Declarations
 
+(declare-function org-attach-link-expand "org-attach" (link &optional buffer-or-name))
+
 (defvar org-export-man-default-packages-alist)
 (defvar org-export-man-packages-alist)
 (defvar orgtbl-exp-regexp)
@@ -616,7 +618,7 @@ INFO is a plist holding contextual information.  See
                  (concat type ":" raw-path))
                 ((member type '("file" "attachment"))
 		 (when (string= type "attachment")
-		   (setq raw-path (org-element-property :attachment-path link)))
+		   (setq raw-path (org-attach-link-expand link)))
 		 (org-export-file-uri raw-path))
                 (t raw-path))))
     (cond

lisp/ox-md.el

@@ -35,6 +35,8 @@
 
 ;;; Function Declarations
 
+(declare-function org-attach-link-expand "org-attach" (link &optional buffer-or-name))
+
 ;;; User-Configurable Variables
 
 (defgroup org-export-md nil
@@ -405,7 +407,7 @@ INFO is a plist holding contextual information.  See
 		 (concat type ":" raw-path))
 		((member type '("file" "attachment"))
 		 (when (string= type "attachment")
-		   (setq raw-path (org-element-property :attachment-path link)))
+		   (setq raw-path (org-attach-link-expand link)))
 		 (org-export-file-uri (funcall link-org-files-as-md raw-path)))
 		(t raw-path))))
     (cond

lisp/ox-odt.el

@@ -34,6 +34,8 @@
 
 ;;; Function Declarations
 
+(declare-function org-attach-link-expand "org-attach" (link &optional buffer-or-name))
+
 ;;; Define Back-End
 
 (org-export-define-backend 'odt
@@ -2706,7 +2708,7 @@ INFO is a plist holding contextual information.  See
 		 (concat type ":" raw-path))
 		((member type '("file" "attachment"))
 		 (when (string= type "attachment")
-		   (setq raw-path (org-element-property :attachment-path link)))
+		   (setq raw-path (org-attach-link-expand link)))
 		 (org-export-file-uri raw-path))
 		(t raw-path)))
 	 ;; Convert & to & for correct XML representation

lisp/ox-texinfo.el

@@ -30,6 +30,8 @@
 
 ;;; Function Declarations
 
+(declare-function org-attach-link-expand "org-attach" (link &optional buffer-or-name))
+
 (defvar orgtbl-exp-regexp)
 
 
@@ -1058,7 +1060,7 @@ INFO is a plist holding contextual information.  See
 		 (concat type ":" raw-path))
 		((member type '("file" "attachment"))
 		 (when (string= type "attachment")
-		   (setq raw-path (org-element-property :attachment-path link)))
+		   (setq raw-path (org-attach-link-expand link)))
 		 (org-export-file-uri raw-path))
 		(t raw-path))))
     (cond