Regex101

> I wonder if this could be used to make C# webassembly more viable. You might enjoy reading this GitHub thread [0] where the community contributed a WASM library wrapping the C# regex code so that regex101.com could have a "C# mode". Lots of nerd sniping about reducing the payload size. (There's also another thread [1] discussing the minification of a rust version of that same regex101 wasm library to provide a "rust mode" using @burntsushi's regex crate.) [0]: https://github.com/firasdib/Regex101/issues/156 [1]: https://github.com/firasdib/Regex101/issues/1208

From their FAQ: For JavaScript, regex101 uses the browser's regex engine, so you may see different results on different browsers for the same test case. FAQ link: https://github.com/firasdib/Regex101/wiki/FAQ#how-close-does... This is the actual service worker for JS regexps: https://gist.github.com/helb/6c9edb53d73489f85390f82826c2b08...

This is really, really good. We work on regex ourselves (github.com/01org/hyperscan) and I will definitely point people towards this when they are trying to figure regex out. The only regret I have is that many of the interesting regexes we see in the course of our work are not something which we can type into someone else's web site. Fortunately there are others who have looked at the idea of making an off-line version: https://github.com/firasdib/Regex101/issues/76