<blockquote>
<p>Is anyone interested in working on this issue?</p>
</blockquote>
<p>I did have a very quick look at it (ages ago) but couldn't see an easy way to expand the existing lua calls with an extra one to add relation details to ways (sample comment in my notes "In 'if (lua_pcall(L, 4, 6, 0))' WTF do those numbers mean?").</p>
<p>Something that would be really helpful would be documentation of how what is there already is implemented (not just how to use it - <a href="https://github.com/openstreetmap/osm2pgsql/blob/master/docs/lua.md">https://github.com/openstreetmap/osm2pgsql/blob/master/docs/lua.md</a> covers that).</p>

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