Additional option for org-attach-store-link-p

* doc/org-manual.org (Attachment options)
* etc/ORG-NEWS (New option in ~org-attach-store-link-p~)
* lisp/org-attach.el (org-attach-store-link-p)
  (org-attach-attach): Add option to store a link to the attached file
  with a file link.

doc/org-manual.org

@@ -8031,6 +8031,15 @@ mentioning.
   tried when resolving existing ID's into paths, to maintain backward
   compatibility with existing folders in your system.
 
+- ~org-attach-store-link-p~ ::
+  #+vindex: org-attach-store-link-p
+  Stores a link to the file that is being attached.  The link is
+  stored in ~org-stored-links~ for later insertion with {{{kbd(C-c
+  C-l)}}} (see [[*Handling Links]]).  Depending on what option is set in
+ ~org-attach-store-link-p~, the link is stored to either the original
+  location as a file link, the attachment location as an attachment
+  link or to the attachment location as a file link.
+
 - ~org-attach-expert~ ::
   #+vindex: org-attach-expert
   Do not show the splash buffer with the attach dispatcher when

etc/ORG-NEWS

@@ -64,6 +64,10 @@ normal headlines.  The face can be customized via ~org-headline-todo~.
 there was only key =<q>= to exit column view and only functional on lines
 which were affected by the column view.
 
+*** New option in ~org-attach-store-link-p~
+~org-attach-store-link-p~ have a new option to store a file link to
+the attachment.
+
 * Version 9.3
 
 ** Incompatible changes

lisp/org-attach.el

@@ -139,7 +139,8 @@ Selective means to respect the inheritance setting in
   :type '(choice
 	  (const :tag "Don't store link" nil)
 	  (const :tag "Link to origin location" t)
-	  (const :tag "Link to the attach-dir location" attached)))
+	  (const :tag "Attachment link to the attach-dir location" attached)
+	  (const :tag "File link to the attach-dir location" file)))
 
 (defcustom org-attach-archive-delete nil
   "Non-nil means attachments are deleted upon archiving a subtree.
@@ -506,6 +507,10 @@ METHOD may be `cp', `mv', `ln', `lns' or `url' default taken from
             ((eq org-attach-store-link-p t)
              (push (list (concat "file:" file)
 			 (file-name-nondirectory file))
+		   org-stored-links))
+	    ((eq org-attach-store-link-p 'file)
+	     (push (list (concat "file:" attach-file)
+			 (file-name-nondirectory attach-file))
 		   org-stored-links)))
       (if visit-dir
           (dired attach-dir)