Re: Is “fr, en; q=0.3” a valid Accept-Language value?

Julian Reschke <julian.reschke@gmx.de> Sun, 30 October 2016 10:30 UTC

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To: Samuel Williams <space.ship.traveller@gmail.com>
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Cc: ietf-http-wg@w3.org
From: Julian Reschke <julian.reschke@gmx.de>
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Date: Sun, 30 Oct 2016 11:25:25 +0100
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Subject: Re: Is “fr, en; q=0.3” a valid Accept-Language value?
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On 2016-10-30 10:21, Samuel Williams wrote:
> Just as a follow up, I've been using other examples on that page as
> part of the unit tests.
>
> However, I am finding it hard to understand the final table:
>
> The media type quality factor associated with a given type is
> determined by finding the media range with the highest precedence that
> matches the type. For example,
>
>   Accept: text/*;q=0.3, text/html;q=0.7, text/html;level=1,
>           text/html;level=2;q=0.4, */*;q=0.5
>
> would cause the following values to be associated:
>
> Media Type Quality Value
> text/html;level=1 q=1
> text/html q=0.7
> text/plain q=0.3
> image/jpeg q=0.5
> text/html;level=2 q=0.4
> text/html;level=3 q=0.7
>
> But I fail to see, for example, where image/jpeg comes from or, say,
> text/html;level=3 because they aren't listed in the given Accept:
> header. Is this a documentation bug?

"image/jpeg" is covered by "*/*;q=0.5"; "text/html;level=3" is covered 
by "text/html;q=0.7".

Best regards, Julian