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Exporting images to different output formats


From: Michael Welle
Subject: Exporting images to different output formats
Date: Sat, 29 Oct 2022 13:52:20 +0200
User-agent: Gnus/5.13 (Gnus v5.13)

Hello,

I want to export to different output formats. Trouble is the way ox-gfm
exports images. So I thought, hm, why not utilise macros to abstract away
the differences. Well, that escalated quickly:

#+macro: img_gfm (eval (concat "#+begin_export md\n![img](" $1 " \"" $2  
"\")\n*Abb.: " $2 "* (Quelle: " $3 ")\n#+end_export"))

#+macro: img_latex (eval "foobar")

# Image export for Github flavoured markdown
# $1 path to image
# $2 caption
# $3 source
#+macro: img (eval (cl-case org-export-current-backend ('gfm (concat 
"{{{img_gfm(" $1 "," $2 "," $3")}}}")) ('latex "{{{img_latex}}}") (t "barfoo")))


{{{img(./foo, foo, barfoo)}}}

That kind of works (and breaks if I want commas in the caption), but is
ugly as... and doesn't get better if I implement the other output formats.

Maybe syntax like @@latex: ...@@ would help. But no, I think that is
defined in the specific backends, not as a general mechanism.

So, how can I do it better?

All the best,
hmw



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