A Broken Heart: Getting a 100x speedup by changing one dumb line of code

https://allenpike.com/2026/a-broken-heart/

A Broken Heart

Or, getting a 100x speedup with one dumb line of code.

Allen Pike

@apike I’m not sure anyone knows how truly meta your last blog post is. Working on an app today and it TOTALLY borked my layout code trying to load it.

To fix it, I fed Claude YOUR article ABOUT how to render your article.

Well played, sir. Well played, indeed.

@cheesemaker Haha, what? Like your app couldn’t render my article, so you asked Claude to use the techniques in that article to debug the app? 🤯

@apike yep! We live in crazy times. This was Claude’s response:
“Oh wow! This is perfect - the article is literally ABOUT this exact bug! The RSS feed content must include that broken minimal
 reproduction HTML which sets font-family: “Noto Color Emoji” - and that’s what’s causing the slow rendering and weird spacing in our
 WebView!

 The solution is to strip out or override any font-family declarations that reference Noto Color Emoji”