[Tagging] waterway=derelict_canal

[Andy Townsend]

On 26/08/2015 13:44, Dave F. wrote:
> On 25/08/2015 23:20, Paul Norman wrote:
>> On 8/24/2015 3:35 PM, Andy Townsend wrote:
>>> That's not so bad in lua, but imagine writing "... and not 
>>> disused=yes" into every cartocss rule! 
>>
>> Fortunately, we will not have to do that in OpenStreetMap Carto, as 
>> we will not be supporting the style of tagging where one tag says 
>> what something is, then another tag saying it's not really that, but 
>> used to be, or will be. We do not want to encourage the use of 
>> disused=yes, abandoned=yes, or similar tags.
>
> Sub tags give *extra* data about an entity.
>
> A pub that's closed down it's still recognisable as a pub.

Not by someone who wants a beer, it can't!