Re: Inline SVG in markdown, converted to ODT

[Christophe Demko <chdemko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

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You could write a filter that convert a Inline SVG image defined by plain 
text into a Inline SVG image defined by BASE64

Le jeudi 10 août 2023 à 15:39:40 UTC+2, nopria a écrit :

> Following other tentatives 
> <https://github.com/jgm/pandoc/issues/4058#issuecomment-908942852> of 
> markdown to DOCX conversion containing external SVG, I tried to convert to 
> ODT a markdown containing **inline** SVG, such as the one below:
>
> # Example document
>
> This is an example of Markdown document with inline embedded SVG images.
>
> Inline SVG image defined by plain text:
>
> ![SVG Image](data:image/svg+xml;charset=utf-8,<?xml version="1.0"?><svg 
> xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="-150 
> -150 300 300"><rect x="-100" y="-100" rx="8" ry="8" width="200" 
> height="200" style="fill:#CCCCFF;stroke:#000099"/></svg>)
>
> Inline SVG image defined by BASE64 converted text:
>
> ![SVG 
> Image](data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIj8+PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAiIGhlaWdodD0iMTAwIiB2aWV3Qm94PSItMTUwIC0xNTAgMzAwIDMwMCI+PHJlY3QgeD0iLTEwMCIgeT0iLTEwMCIgcng9IjgiIHJ5PSI4IiB3aWR0aD0iMjAwIiBoZWlnaHQ9IjIwMCIgc3R5bGU9ImZpbGw6I0NDQ0NGRjtzdHJva2U6IzAwMDA5OSIvPjwvc3ZnPg==)
>
> Some math to check if it works;
>
> $$A_c = 23 r^2 - v$$
>
> using command
>
> pandoc example.md -o example.odt
>
> with Pandoc 3.1.6.1. As you may confirm yourself, the BASE64 inline SVG is 
> correctly converted, while the textual inline SVG is not displayed in the 
> resulting ODT and the following warning appears at conversion:
>
> [WARNING] Could not fetch resource data:image/svg+xml;charset=utf-8 ...
>
> Given that a BASE64 inline SVG is enough to do the job, I would prefer to 
> avoid the BASE64 conversion and go with the plain text inline SVG.
>
> I already tried html encoding of SVG text and uppercase "utf8" without 
> success.
>
> I choose ODT because it's open and because it seems to display SVG 
> natively without needing PNG conversion (I hope it works with more complex 
> SVG too), which is a great feature.
>
> Thank in advance for your time.
>

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