One of my pet peeves is that most regular expressions matching URLs fall somewhat short of what I expect. This pattern from John Gruber is so far the best I’ve found but, like virtually every other implementation, it doesn’t match URLs without protocol. Nobody expects to have to include “www” in a URL for it to work these days, and in daily conversations it’s rare to enunciate “aitch-tee-tee-pee-colon-slash-slash” when you refer to some website. So why is it so hard to match URLs without using these strings as crutches?
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