Meta viewport parsing compatability

[josepharhar]

Consider the following meta viewport tag:

<meta name="viewport" content="width=device-width;">

Both chrome and safari ignore this tag due to the semicolon. However, firefox treats the semicolon the same as a separator just like comma...

Is this specified anywhere? Should we have firefox follow the chrome/safari behavior?

I found this in this chrome bug, and the semicolon behavior appears to have been added in this patch.

[domenic]

The meta viewport tag is currently specified in an unfortunate fashion: it doesn't follow the existing HTML specs for meta names, and it is specified in an entirely non-normative section: https://drafts.csswg.org/css-device-adapt/#viewport-meta

See #3494 and w3c/csswg-drafts#331 . It's a mess that needs someone to drive the spec/testing work, on both CSS and HTML sides.

[josepharhar]

Thanks for the link to #3494! I think this can probably be merged into #3494.