How to obtain the ways that a node is part of?

[SomeoneElseOSM]

With nodes and ways that are members of relations, it's easy (see https://github.com/systemed/tilemaker/blob/master/docs/RELATIONS.md , #749 , etc.). Is there an equivalent mechanism for ways?

As an example, https://www.openstreetmap.org/node/21512878 is a highway=motorway_junction, but is not actually on a motorway - it'd be great to treat it differently to "real" motorway junctions. Is there any way of optionally obtaining the ways that certain specific nodes are part of, in a similar way to local rel, role = NextRelation() for relations?

[systemed]

There's no way to do this at present I'm afraid, and I suspect it wouldn't be easy to implement. I'll give it some thought but it's not likely to be something that could arrive in the near future.

[SomeoneElseOSM]

I'll see if I can figure out a way of getting the data into the input .pbf somehow (possibly from a previous database query on an osm2pgsql database). Implementing it might sit in the "too hard" pile for a while first, though.

The places where I'd see it being useful are highway=motorway_junction, highway=mini_roundabout and highway=passing_place.

[systemed]

Separately I'm wondering about adding a little key/value datastore to tilemaker that could be accessed from Lua, so you could read ids in from a text file, and look them up in node_function and way_function. It'd be handy for some similar things I do for c.t's vector tiles - currently I use a little tool I rigged up at https://github.com/systemed/tagmangle, but that only works on ways, not nodes.