bug#47088: org-w3m: handle w3m-image link information

[Boruch Baum]

On 2021-05-05 10:16, Bastien wrote:
> Thanks, it looks good.
>
> Can you try updating the patch against Org's upstream repository at
> https://code.orgmode.org/bzg/org-mode/?
>
> Note that the file is lisp/ol-w3m.el there.

1] Attached.

2] Here's a commit message in the Changelog style:

   2021-05-06  Boruch Baum  <boruch_baum@gmx.com>

        * ol-w3m.el (org-w3m-copy-for-org-mode)
        (org-w3m-get-next-link-start, org-w3m-get-prev-link-start):
        Account for w3m-img links.
        (org-w3m-get-anchor-start, org-w3m-get-prev-link-start)
        (org-w3m-no-prev-link-p): Unused function notes.
        (org-w3m-get-image-end): New function, for w3m-img links.

3] As mentioned in the patch, and in the commit message, there seem to
   be several functioned unused in the code base that could be
   candidates for removal...

        org-w3m-get-anchor-start
        org-w3m-no-prev-link-p
        org-w3m-get-prev-link-start

4] Additionally, in performing the merge I came across function
   org-string-nw-p, which seems to be an unnecessary duplicate of the
   emacs core function string-blank-p. It may be that historically you
   once needed your own home-made functions/macros, but now that emacs
   core has them, you may want to consider a refactor.

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ol-w3m.patch
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