[whatwg] Quirks Mode Standard
bzbarsky at MIT.EDU
Fri Feb 10 09:17:30 PST 2012
On 2/10/12 11:23 AM, Aryeh Gregor wrote:
> On Fri, Feb 10, 2012 at 10:37 AM, Boris Zbarsky<bzbarsky at mit.edu> wrote:
>> I agree that having the list for lengths reduces the scope of the problem
>> somewhat. But the color quirk means that any shorthand that includes colors
>> will run into ambiguity issues if any keywords for any subproperty only use
>> letters in the range a-f. I _think_ we can't hit that case now, but going
>> forward that will either place a restriction on keyword values or we'll need
>> to define how to resolve the ambiguity somehow.
>> Even for lengths, if we ever add any new subproperties to border, say, that
>> happen to take numbers we would run into trouble. I'd rather not
>> overconstrain future development of CSS by how we define quirks behavior.
> Why not just say that these quirks only apply to existing syntaxes,
> not new ones?
Simon's proposal does that, but it's not good enough to avoid all the
problems. For example, border-bottom-width is in the list of properties
that has the quirk apply to it, as is border-bottom. If we add a
border-bottom-count property for some sort of multiple border setup and
allow setting it via border-bottom, then you suddenly have a parsing
ambiguity for border-bottom, right?
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