- From: Tab Atkins Jr. <jackalmage@gmail.com>
- Date: Tue, 16 Feb 2016 15:53:08 -0800
- To: fantasai <fantasai.lists@inkedblade.net>
- Cc: "www-style@w3.org" <www-style@w3.org>
On Tue, Feb 16, 2016 at 3:43 PM, fantasai <fantasai.lists@inkedblade.net> wrote: > The definition for calc() states: > > https://www.w3.org/TR/2015/CR-css-values-3-20150611/ > # The value resulting from an expression must be clamped to the > # range allowed in the target context. > > There's a few issues with this... > > Issue 1: > It doesn't state when this is clamped. Presumably the used value is > clamped. > Assuming everyone agrees, I'll update the spec to say so. > > Issue 2: > This presumably means that ''width: calc(-5px)'' is valid, and treated as > zero. > However, the serialization rules recently added to the spec state that > https://drafts.csswg.org/css-values-3/#calc-serialize > # If the result is a single value, serialize as that value, > # discarding the calc() wrapper. > This means that some calc() values will not be round-trippable. Issue 2 is only an issue because of your suggested resolution for Issue 1. If the clamping happens "as soon as possible", then the serialization rules would produce a "0" in that case. ~TJ
Received on Tuesday, 16 February 2016 23:53:55 UTC