Re: An org-attach link type [7.9.1 (7.9.1-elpa @ /home/youngfrog/.emacs.d/elpa/org-20120903/)]

["Nicolas Richard" <theonewiththeevillook@yahoo.fr>]

Bastien <bzg@altern.org> writes:
> If you feel like adding the attach link type to org-attach.el

Second part, which is the actual "attach link" part.

-- 
N.

-- 8> --

From 85f5c10d8d448e56458377f166413f7de6458563 Mon Sep 17 00:00:00 2001
From: "nrichard (geodiff-mac3)" <nrichard@ulb.ac.be>
Date: Thu, 27 Sep 2012 17:38:43 +0200
Subject: [PATCH 2/2] (org-attach) Add an /attach/ link type, with completion

* org-attach.el (org-attach-complete-how): new variable for link completion
(org-attach-complete-link): new function for link completion.
---
 lisp/org-attach.el | 28 ++++++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/lisp/org-attach.el b/lisp/org-attach.el
index 4a4c195..3a1e273 100644
--- a/lisp/org-attach.el
+++ b/lisp/org-attach.el
@@ -132,6 +132,18 @@ lns   create a symbol link.  Note that this is not supported
 	  (const :tag "Link to origin location" t)
 	  (const :tag "Link to the attach-dir location" attached)))
 
+(defcustom org-attach-complete-how 'attach
+  "Determine how `org-attach-complete-link' completes links to attachments.
+
+It can be one of the symbols :
+- `file' :: a \"file:\" link is returned (the exact path inserted
+            depends on `org-link-file-path-type'),
+- `attach' :: an \"attach:\" link is returned (default)."
+  :group 'org-attach
+  :type '(choice
+	  (const :tag "File" file)
+	  (const :tag "Attach (default)" attach)))
+
 ;;;###autoload
 (defun org-attach ()
   "The dispatcher for attachment commands.
@@ -490,6 +502,22 @@ Basically, this adds the path to the attachment directory, and a \"file:\"
 prefix."
   (concat "file:" (org-attach-expand file)))
 
+(defun org-attach-complete-link ()
+  "Read a filename from the attachment directory, with completion.
+
+This provides link completion for the \"attach\" type. The exact
+behaviour depends on the variable `org-attach-complete-how'."
+  (let* ((attach-dir (or (org-attach-dir nil) (error "No attachment dir")))
+         (files (org-attach-file-list)) ; names relative to attach dir.
+         (file (org-icompleting-read "Find attachment: " files nil t)))
+    (cond
+      ((eq org-attach-complete-how 'file) (org-attach-expand-link file))
+      ((eq org-attach-complete-how 'attach) (concat "attach:" file)))))
+
+(org-add-link-type "attach" 'org-attach-open-link)
+(defun org-attach-open-link (file)
+  (org-open-file (org-attach-expand file)))
+
 (provide 'org-attach)
 
 ;;; org-attach.el ends here
-- 
1.7.12