Support for svg and shell escape

[Undermyth]

Texlyre seems not to support SVG images. When using \includesvg, it will have errors like

Package svg Warning: You didn't enable `shell escape' (or `write18')
(svg)                so it wasn't possible to launch the Inkscape export
(svg)                for `media/hint_nohint.svg' on input line 316.`

can we have --shell-escape option added to compilation, or Texlyre does not support this?

[fabawi]

@Undermyth TeXlyre uses WASM engines to perform the compilation. It cannot execute external programs. I can patch it to support SVGs through SVG to PDF conversion, but running external programs like InkScape is not possible since the entire compilation runs inside your browser. You can include PDFs as figures though if you need vector graphics.

[Undermyth]

@fabawi maybe something like Typst online editor? They have a option for converting SVG to PDF when uploading SVGs

[fabawi]

For future reference, it appears as though Typst uses resvg-js for SVG to PDF conversion. It does not work well. Take the following image as an example:

Here is how resvg-js renders it:

And here is how Typst renders it:

Besides the fact that it incorrectly transforms the font and its color, it also converts it to a png. This is not usable for scientific publications as it does not even render LaTeX math in those vector graphics. In its current state, their approach is more of a hack rather than a practical solution. AFAK, there are no proper SVG to PDF converters that run in the browser (client side) ATM. If you stumble upon a feasible solution, please do let me know.

[fabawi]

As a test-bed, I created an in-browser EPS and SVG to PDF converter. The SVG converters use three different libraries to perform the conversion so we can experiment with their current capabilities https://texlyre.github.io/vector-pdf-converter