[Tagging] waterway=derelict_canal

[Andrew Errington]

On 26/08/2015, Richard <ricoz.osm at gmail.com> wrote:
> On Wed, Aug 26, 2015 at 03:23:10PM +1000, Warin wrote:
>> On 26/08/2015 8:20 AM, 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.
>>
>> Your choice to use what you want.
>> The mappers chose to use tags that reflect what is, was or will be. As
>> they
>> want.
>
> http://wiki.openstreetmap.org/wiki/Comparison_of_life_cycle_concepts

Curiously, the disadvantages of "disused=yes" seem rather contrived,
and not really likely, whereas the disadvantages of "disused:*=*" seem
quite genuine.  Not to mention that "disused=yes" is simpler, and very
obvious to a human reader.

Andrew