Re: [CSS3 Values] referencing width or height explicitly from Tab Atkins Jr. on 2011-08-19 (www-style@w3.org from August 2011)

From: Tab Atkins Jr. <jackalmage@gmail.com>
Date: Fri, 19 Aug 2011 12:49:45 -0700
To: Brian Manthos <brianman@microsoft.com>
Cc: "www-style@w3.org" <www-style@w3.org>
Message-ID: <CAAWBYDBkWWwFFJyF3jexcpwe_QhW-Z7GqFOrB6OP6npoXnOCBQ@mail.gmail.com>

On Fri, Aug 19, 2011 at 12:44 PM, Brian Manthos <brianman@microsoft.com> wrote:
> #3.At "/":
> # check: right side is "number"
> # return: the type of the left side
>
> This seems arbitrary to me.
>
> Why should "calc(5px * (8px / 4px))" get rejected at parse time rather than evaluate to 10px?

So we can detect division by zero at parse-time.  Otherwise, something like:

calc( 5px / (10px - 10%) )

...is valid or not based on the element's current width.

~TJ

Received on Friday, 19 August 2011 19:50:34 UTC