Version 1174 was commited by markb on 2009-09-07 11:50:52 +0100 (Mon, 07 Sep 2009) "Soft clip" ways before doing short arc removal. To avoid the problem of short arcs being generated when ways are clipped after the short arc removal has been done, we now "soft clip" the ways before short arc removal by adding nodes where the ways meet the boundary. These boundary nodes are "set in concrete" and cannot be merged into other nodes so their coordinates will not change.