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Re: [whatwg] URL: spec review - basic_parser

From: Sam Ruby <rubys@intertwingly.net>
Date: Tue, 14 Oct 2014 07:20:47 -0400
Message-ID: <543D070F.4030803@intertwingly.net>
To: Simon Pieters <simonp@opera.com>, Anne van Kesteren <annevk@annevk.nl>
Cc: whatWG <whatwg@whatwg.org>
On 10/14/2014 07:00 AM, Simon Pieters wrote:
> On Tue, 14 Oct 2014 12:34:55 +0200, Anne van Kesteren <annevk@annevk.nl>
> wrote:
>
>>> If you could be so kind as to point out what I am missing, I would
>>> appreciate it.
>>
>> The way the <a> element works, I assume. Which is mostly how URLUtils
>> works when associated with an object that is not URL.
>
> [[
> The a element also supports the URLUtils interface. [URL]
>
> When the element is created, and whenever the element's href content
> attribute is set, changed, or removed, the user agent must invoke the
> element's URLUtils interface's set the input algorithm with the value of
> the href content attribute, if any, or the empty string otherwise, as
> the given value.
> ]]
> https://html.spec.whatwg.org/multipage/semantics.html#the-a-element
>
> -> set the input
>
> [[
> 1. Set url to null.
> ...
> 4. If url is not failure, set url to url.
> ]]
> https://url.spec.whatwg.org/#concept-urlutils-set-the-input
>
> When /url/ is failure, https://url.spec.whatwg.org/#concept-urlutils-url
> is null. So:
>
> .href:
>
> [[
> 1. If url is null, return input.
> ]]
> https://url.spec.whatwg.org/#dom-url-href
>
> .protocol:
>
> [[
> 1. If url is null, return ":".
> ]]
> https://url.spec.whatwg.org/#dom-url-protocol
>
> ...and the other attributes return empty string in the first step if url
> is null.
>
> Does that help?

Indeed, it does.  Thanks!

I was looking too myopically, assuming that urltestdata.txt was testing 
URL; and got sidetracked by http://www.lookout.net/test/url/.

What I should have been looking at is 
https://github.com/w3c/web-platform-tests/tree/master/url, and in 
particular, the name of:

https://github.com/w3c/web-platform-tests/blob/master/url/a-element.html

  - - -

I think that a working and up-to-date live url parser would be a handy 
thing to have, and I hope to have one available shortly.

- Sam Ruby
Received on Tuesday, 14 October 2014 11:21:14 UTC

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