Well, on Unix file extensions are a convention and don't have any strict semantic meaning. Maybe this doesn't make sense in a world where most people do think i

Well, on Unix file extensions are a convention and don't have any strict semantic meaning. Maybe this doesn't make sense in a world where most people do think in terms of file extensions (thanks to the popularity of Windows) but it shouldn't be surprising that non-Windows programs might not special-case file extensions. (Though in fairness, text editors do usually have special casing for file extensions and these days tools like ls will colour filenames based on the extension.)