ON_MergeBreps implementation missing in opennurbs

ON_MergeBreps is in the header files of opennurnbs file, but not implemented.
Will the code ever be moved from Rhino to OpenNurbs?

Probably not. Officially, OpenNurbs is only a toolkit to read and write 3dm files, without geometry manipulation.

There are many functions in headers that are not in opennurbs, by the way.

Remind me, what does MergeBreps do, and how is it different from JoinBreps? (Not that JoinBreps is implemented, but it might be easy to code brep merging yourself)

OK. then I have to go using combineCoincidentEdges und keeping track of the edge indices myself.
or make the whole topology myself.