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> there is no such thing as invalid HTML There is. There are things that are still considered invalid, like nesting form elements for instance. (this doesn't

• chrismorgan 9mo ago
  The things that are invalid should all have defined behaviour. For example, a <label> is not allowed to contain two form controls, but is defined as applying to the first such control. As far as parse errors is concerned, https://html.spec.whatwg.org/multipage/parsing.html#parse-errors https://html.spec.whatwg.org/multipage/parsing.html#parse-er... says: > This specification defines the parsing rules for HTML documents, whether they are syntactically correct or not. Certain points in the parsing algorithm are said to be parse errors. The error handling for parse errors is well-defined (that's the processing rules described throughout this specification), but user agents, while parsing an HTML document, may abort the parser at the first parse error that they encounter for which they do not wish to apply the rules described in this specification.
  • jraph 9mo ago
    > The things that are invalid should all have defined behaviour 100% agree. And then I guess the philosophical question is "What's invalid when everything is defined?"
    • chrismorgan 9mo ago
      The idea of almost all of HTML’s errors (parsing and conformance) is that they indicate likely errors (though it’s definitely quite possible to deliberately skirt the edges, e.g. content=width=device-width,initial-scale=1).