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by ocdtrekkie 2550 days ago
amp4email is far worse and more dangerous than amp4web, and that's why privacy respecting email services are so opposed to it. Tutanota here, and FastMail who posted about it when it was first announced.

AMP isn't a subset of HTML, it's it's own proprietary fork of HTML. It's not saying an img tag is okay, it's tell you to use an amp-img tag.
1 comments
SquareWheel 2550 days ago
>AMP isn't a subset of HTML, it's it's own proprietary fork of HTML.

This is another misunderstanding. HTML allows custom tags. This is built into the spec. AMP is plain and regular, standards-compliant HTML.

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callahad 2550 days ago
It is impossible to use AMP as a standalone Custom Element library and still validate as AMP. Valid AMP is required to dynamically load the library from Google's unversioned CDN.
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SquareWheel 2550 days ago
That's true. But it's still valid HTML. It's most definitely not a fork of anything.

>unversioned CDN

Isn't the filename versioned (v0.js)?

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callahad 2550 days ago
Not really. The project leaders have explicitly stated that the content of the script at that URL is subject to change at any time, and thus users are prohibited from locking it to an audited, known version with an SRI hash.
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SquareWheel 2550 days ago
I see. Thanks for the clarification. That is pretty poor practice.

I guess v0 might imply "beta" and thus not have stable API naming yet. But still, it's clearly being used in production at this point.

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ocdtrekkie 2550 days ago
I think you are misunderstanding my point.

An img tag doesn't work on an AMP page. It has to be an amp-img. Every standard HTML tag is invalid in AMP content, as you must use a customized AMP flavor of HTML.

Whether or not it returns valid as HTML markup isn't really relevant: The point is it's an entirely different, incompatible, markup, from what a normal browser knows how to interpret and use, and if your browser doesn't have JavaScript, it's not even going to know what any of those custom tags are, is it?

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joshuamorton 2550 days ago
That's not true, only tags that make web requests or do dynamic things are amp'd. You still use div and button and style and span and whatnot.
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SquareWheel 2550 days ago
There is an important difference between saying it is invalid html, and it is invalid amp markup. An img tag will work like normal. It just won't be a valid AMP page any longer.

>if your browser doesn't have JavaScript, it's not even going to know what any of those custom tags are, is it?

It wouldn't. <noscript> tags are needed for that. But Javascript is a web standard, and this is the correct way to create new elements.

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