I've now completed step 1, as described at [1]. Here are my questions/comments:
1) https://url.spec.whatwg.org/#url-code-points U+D8000 to U+DFFFD are invalid as they are within the UTF-16 surrogate range 2) https://url.spec.whatwg.org/#concept-basic-url-parser I'm interpreting "terminate this algorithm" and "return failure" to mean the same thing, and I'm interpreting "parse error" as "set parse error flag and continue". 3) https://url.spec.whatwg.org/#authority-state a) Did you really mean prepend in Step 1.1? b) Step 1.3.3 seems problematic. I interpret this prose to mean "if any character in buffer is a "%" and the first two characters after the pointer position in input aren't hex characters". Specifically, it appears to be comparing a possibly non-contiguous set of characters. 4) https://url.spec.whatwg.org/#file-host-state Step 1.3.2 returns failure without setting parse_error. Is this correct? 5) https://url.spec.whatwg.org/#host-state Step 1.2.2 also returns failure without setting parse_error. 6) https://url.spec.whatwg.org/#relative-path-state If input contains a path but no query or fragment, the last part of the path will be accumulated into buffer, but that buffer will never be added to the path - Sam Ruby [1] http://lists.w3.org/Archives/Public/www-tag/2014Oct/0053.html
