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Re: [O] Handling custom link types for html export in v 9.0 - Replacemen

From: Milan Zimmermann
Subject: Re: [O] Handling custom link types for html export in v 9.0 - Replacement for deprecated `org-add-link-type`?
Date: Tue, 18 Apr 2017 21:50:43 -0500

Great, thanks very much John.

As a minor note I had to make a slight change

  :follow 'org-custom-link-img-follow     ; my old code
  :export 'org-custom-link-img-export)  ; my old code

And then it works equivalent with the previous version in 8.



(There is another note which is for a new thread: both in 8 and 9,
while they export what I need, actually do not display the image in
org buffer. The reason seem to be the  org-display-inline-images is
only looking for the "file" link but I need to debug that first)

On Tue, Apr 18, 2017 at 9:00 AM, John Kitchin <address@hidden> wrote:
> You can find a many examples of the new link syntax here:
> http://kitchingroup.cheme.cmu.edu/blog/2016/11/04/New-link-features-in-org-9/
> You will probably be able to reuse much of your old code  and this:
> (org-link-set-parameters
>    "img"
>    :follow (your-old-follow-code)
>    :export (your-old-export-code))
> Milan Zimmermann writes:
>> Hi:
>> I have a question about how to define custom link type, which before
>> 9.0 used the (9.0) deprecated  `org-add-link-type`.
>> 1. Let me first provide the context:
>> There is often a need to generate, for org links export/publish to
>> Html, elements where img src URL starts with a slash, like this
>> <img src="/images/a.jpg" >
>> The only way that was possible before v9, for this to be exported from
>> a link such as
>> [[/images/a.jgp]]
>> was to use a method described in
>> http://stackoverflow.com/questions/14684263/how-to-org-mode-image-absolute-path-of-export-html
>> - Basically, the solution described there is
>> a) define a custom link type such as "img"
>> b) in org,  use [[img:images/a.jpg]]
>> c) define two functions handling the img link in org and on
>> export/publish, and call (org-add-link-type "img"
>> 'org-custom-link-img-follow 'org-custom-link-img-export)
>> 2. The problem and question
>> In org 9.0, we get `org-add-link-type ... This function is obsolete
>> since Org 9.0 use `org-link-set-parameters' instead.
>> My problem is I have no idea how to, in a practical sense, use
>> `org-link-set-parameters` to define a custom link type "img" and
>> handle it's image handling in both org buffer and Html publish.
>> My question is, are there any links and examples how one would do the
>> above in 9.0?
>> Thanks
>> Milan
> --
> Professor John Kitchin
> Doherty Hall A207F
> Department of Chemical Engineering
> Carnegie Mellon University
> Pittsburgh, PA 15213
> 412-268-7803
> @johnkitchin
> http://kitchingroup.cheme.cmu.edu

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