Cursed knowledge

Nick pointed me towards Marcin who pointed me towards immich's list of cursed knowledge the other day, and it has already become a running joke in the Slack. Here is a baker's dozen of Buttondown's own cursed knowledge: 1Yes, that's the joke. The Python ua-parser library assigns the device family "Other" to every non-Mac desktop browser The HTML accept attribute only filters what the file-picker dialog shows you; drag-and-drop and clipboard paste bypass it entirely. Safari and Chrome re-serialize quoted CSS custom-property strings differently when you read them back via getComputedStyle: Chrome keeps the single quotes, WebKit rewrites them to double quotes. Django emits a CacheKeyWarning — which fails our CI — for any cache key over 250 bytes or containing a space or control character. Python's requests has no default timeout and will, given the opportunity, wait forever. SPF include: directives recursively chain DNS lookups against a hard cap of ten — exceed it and you get a…