A stray "j" ruined my evening
A developer spent an evening debugging a mysterious issue caused by a stray lowercase "j" character that had been accidentally inserted into a configuration file, breaking a build process and leading to an hours-long troubleshooting session.
Background
A stray "j" ruined my evening is a blog post by a software developer recounting a debugging nightmare caused by a single stray character. The author was trying to serve a static site and kept getting mysterious 404 errors, only to discover that a CSS file had a CSS rule (`@import url(...)`) with a font URL that started with a typo: `jhttps://...` instead of `https://...`. That stray "j" broke the CSS parser, preventing the entire stylesheet from loading, which made the site look broken — but the error messages were vague and pointed elsewhere. For readers: this is a classic example of how fragile web tooling can be and how a single invisible typo can cascade into hours of debugging. The post is notable for its relatable, confessional tone and its illustration of a universal developer experience: the "stray character" problem.