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[O] [Feature proposal] Add :description function to org-link-parameters

From: Ihor Radchenko
Subject: [O] [Feature proposal] Add :description function to org-link-parameters
Date: Sat, 03 Aug 2019 00:01:45 +0800


Wondering if anyone is interested in adding a new org-link property to
customise generating the link description.

For now, there is global org-link-make-description-function, which is
shared among all the link types. If would be more convenient if the
description function can be set independently for different link types.

I propose to use :description property in org-link-parameters. A sample
implementation working with current org version is below:

#+begin_src emacs-lisp
(defun yant/org-make-link-description-function (link desk)
  "Return description of the link LINK according to :description link property.
Return DESK if :desk is not set."
  (let ((fun (org-link-get-parameter (car (split-string link ":")) 
    (if (functionp fun)
        (funcall fun link desk)

(setq org-make-link-description-function 

Example usage:

#+begin_src emacs-lisp
(defun org-id-link-desk (link desk)
  "Description function for id: link."
  (let ((id (cadr (split-string link ":"))))
    (org-with-point-at (org-id-find id 'marker)
      (s-replace "||" "/" (yant/task-fulltitle)))))

(org-link-set-parameters "id" 
                         :desk #'org-id-link-desk)


Ihor Radchenko,
Center for Advancing Materials Performance from the Nanoscale (CAMP-nano)
State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong 
University, Xi'an, China
Email: address@hidden, address@hidden

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