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Re: Validator parses multiple browser contents as an error in X-UA-Compatible

From: David Dorward <david@dorward.me.uk>
Date: Sat, 11 Aug 2018 08:30:45 +0100
To: "Carlos Mercado" <CMercado@econometricainc.com>
Cc: www-validator@w3.org
Message-ID: <58E1A744-B9C6-430A-9DE9-4C5AC998E231@dorward.me.uk>
On 10 Aug 2018, at 18:21, Carlos Mercado wrote:

> I believe the parsing of meta elements with hhtp-equiv attributes is 
> incorrectly doing a strict parse for "IE=edge"

It is doing a strict match for that.

This is not incorrect. This is [required by the specification][1]

> instead of a parse for other forms of the edge browser, including the 
> edge browser and other browsers.

Only Internet Explorer supports `X-UA-Compatible`. Edge does not. No 
other browser does.

`IE=Edge` is the only reasonable value to give it when writing HTML 5.

The [Chrome Frame extension][2], for Internet Explorer, which recognised 
`chrome=1` was discontinued over four years ago.


[1]: 
https://html.spec.whatwg.org/dev/semantics.html#attr-meta-http-equiv-x-ua-compatible
[2]: 
https://www.chromium.org/developers/how-tos/chrome-frame-getting-started
Received on Saturday, 11 August 2018 07:31:11 UTC

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