I’ve been going insane this morning, thinking I might have mysteriously lost my ability to type, or even recognize valid HTML…and I’ve been seeing really weird stuff everywhere I type on the web.
It looks like the problem is Webkit, the browser I usually use. I updated it this morning, and it seems to have decided that normal spaces aren’t good enough anymore, and is inserting non-breaking spaces instead. It’s been an infuriatingly difficult problem to track down, because I do most of my composing offline in a text-editor that isn’t afflicted with this bug, and it’s just when I edit that I end up inserting invalid garbage into my stuff.
Anyway, it looks like I’m giving up Webkit and switching to Firefox.