keenwrite

> please don’t use <script type="math/tex">…</script> for equations KeenWrite[0], my desktop text editor, has an Export HTML using TeX/SVG feature that encodes math glyphs as vector paths, embedding the SVG into the resulting HTML file. On the subject of optimizations, KeenWrite can render 1,000 simple TeX formulas to SVG format in about 500 milliseconds (on my desktop machine), sufficient for real-time previews. Two libraries needed changes to accomplish this feat. First, JFreeSVG and Apache Batik both suffer from the same performance problem: they use Java's NumberFormat to convert floating point numbers to strings. It's slow because of internationalization rules, which aren't necessary for a machine-readable format. The fix entailed replacing NumberFormat with the Ryū algorithm[1]. Second, JMathTeX[2] was parsing TeX by throwing except

> If you have the option to consider server-side equation rendering, your users may thank you. I'm developing KeenWrite[0], a desktop-based text editor that provides real-time rendering of TeX. It has two TeX-related HTML export formats: SVG (no rendering for either client or server) or TeX (requires client-side rendering). Behind the scenes it uses a highly-optimized version of JMathTeX[1] that includes a custom renderer to handle translating math font glyphs into SVG paths. [0]: https://github.com/DaveJarvis/keenwrite [1]: https://github.com/DaveJarvis/JMathTeX

> I think the primary problem is that the indentation is significant. An editor problem, perhaps? We don't maintain office documents using vim; why edit structured configuration files using a plain text editor, if doing so is arduous? My text editor[0] abstracts the underlying hierarchical data format behind a tree-based widget[1]. Whether YAML, JSONNET, NestedText, CSON, XML, or TOML backs the widget becomes an implementation detail. [0]: https://github.com/DaveJarvis/keenwrite [1]: https://dave.autonoma.ca/blog/2019/07/06/typesetting-markdow...

There's a bit of code duplication[0] that often emerges as a result of parsing command-line arguments in shell scripts. The duplication can be eliminated by defining[1] the set of arguments to pass into a reusable template script[2]. [0]: https://dave.autonoma.ca/blog/2019/06/16/typesetting-markdow... [1]: https://github.com/DaveJarvis/keenwrite/blob/master/installe... [2]: https://github.com/DaveJarvis/keenwrite/blob/master/build-te...

KeenWrite[0] is my desktop text editor that supports interpolated strings, R statements, and simple TeX expressions[1], all in real-time. The screenshot below shows a -π approximation found by tweaking inputs to the quadratic equation. An older video[2] shows some non-math scenarios. Would appreciate reading your thoughts on integrated interpolated strings. [0]: https://github.com/DaveJarvis/keenwrite [1]: https://i.ibb.co/MSxVyHM/keenwrite-hn.png [2]: https://www.youtube.com/watch?v=u_dFd6UhdV8