[Mapcss] Multi-Value Condition

[Jonathan Bennett]

On 02/08/2011 10:02, Malcolm Herring wrote:
> What would be useful would to be able to factorize conditions. So 
> instead of:
>
> [<conditionA>][<conditionB>], [<conditionA>][<conditionC>]
>
> use:
>
> [<conditionA>][[<conditionB>], [<conditionC>]]
>
Before getting carried away with adding new stuff, remember that much of 
the reason for the language being Map*CSS* is to make it as easy to use 
for as many people as possible by reusing as much of CSS's syntax as 
possible, and only adding extra stuff when we need to. If we break the 
principle of least surprise too often, developers and designers from 
outside OSM are going to be turned off.

By all means add bits to MapCSS that plain W3 CSS doesn't have, but make 
sure you have a good reason (i.e. you *can't* do this otherwise) before 
doing so.

Jonathan