[Tagging] waterway=derelict_canal

[Friedrich Volkmann]

On 27.08.2015 13:51, Andy Townsend wrote:
> On 27/08/2015 12:15, Friedrich Volkmann wrote:
>> There's no point in a disused:foo=bar namespace. That's either historical
>> mapping or hiding from the renderer, both of which are wrong in OSM. 
> 
> Er, no.  A disused:amenity=pub is something that still exists in its own
> right; it's a building that was a pub, is still a building, is probably
> still usable as a navigational aid

That's why the building=* tag stays in place, and you may leave the name
there as well (particularly when it serves as a navigational aid), just drop
the amenity=pub tag.

With disused:amenity=pub you may get in trouble. What if it was a pub at one
time, a nightclub at another time and a restaurant at yet another time?
Maybe it still looks like a nightclub, although it was used as a pub lately.

-- 
Friedrich K. Volkmann       http://www.volki.at/
Adr.: Davidgasse 76-80/14/10, 1100 Wien, Austria