Re: [csswg-drafts] [mediaqueries] Non-positive value should be invalid for 'resolution' feature from L. David Baron via GitHub on 2017-06-07 (public-css-archive@w3.org from June 2017)

From: L. David Baron via GitHub <sysbot+gh@w3.org>
Date: Wed, 07 Jun 2017 21:53:03 +0000
To: public-css-archive@w3.org
Message-ID: <issue_comment.created-306936220-1496872382-sysbot+gh@w3.org>

For the record, the existing 2012 RECcomendation already requires that the value be *positive*, exactly matching what all the implementations do.  Its [Values section](https://www.w3.org/TR/2012/REC-css3-mediaqueries-20120619/#values) says:
> The &lt;resolution> value is a positive &lt;number> immediately followed by a unit identifier (‘dpi’ or ‘dpcm’).

This probably explains why we have such good interoperability.

The text that led to that interoperability just appears to have been dropped from all current specification drafts.

This text, however, didn't get ported to [the relevant section of values-3](https://drafts.csswg.org/css-values-3/#resolution) when the type was copied there (in late 2011 or early 2012).

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Received on Wednesday, 7 June 2017 21:53:09 UTC