shortbread-tiles
Layer "water_lines": tunnel definition
In OSM, a waterway tunnel could have the tag tunnel=flooded: https://wiki.openstreetmap.org/wiki/Tag:tunnel%3Dflooded
So the tunnel field of layer water_lines should be true if tunnel=yes, building_passage, flooded or covered=yes. false otherwise.
I'm +1 on including this in the next minor version as well as avalanche_protector.
Are we better off having false for tunnel=no, no attribute for no tunnel tag, and tunnel=yes for other values of the OSM tunnel tag? This would avoid us having to keep a list of values up to date.
I guess this also raises the question do we want to include the tunnel attribute for anything other than tunnels? Sending tunnel=false with every non-tunnel feature is unnecessary.
Similar issues exist for bridge.
For a proposal to vote on, I propose adding "flooded" and "avalanch_protector" to the list of tunnel values.
The question of default values can be addressed as part of #45
This issue was about the "water_lines" layer (and, in extension, the "water_lines_label" layer). I don't see that "avalanch_protector" fits in here. Of course we can generalize to the "street*" layers, but should make this explicit then before we decide anything.
