Second of multiple languages in HTTP header

Test passes if you see green below, and no message to ignore it.

This test is only valid if the user agent recognises HTTP declarations.

Ignore this test. (:lang not supported) 

Assertion: [Exploratory test] The UA will recognize the second language declared where more than one language is declared in the HTTP Content Language header.

Notes:

In order to tell whether the language information is available, we test a feature, :lang, that makes use of that information in a detectable way. Unfortunately, such features are not uniformly supported across current user agents, and so conclusions must be drawn with care. We run control tests that will raise a flag if :lang is not supported by the user agent - if it is not, that particular test is not valid. If the test proves positive, that should show that the language declaration was recognized.

Note that we are only testing whether a declaration is recognised, not whether it is appropriate (eg. lang attributes in xml documents).

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XHTML 1.0 as HTML

language-declarations-006
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