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Editing: depath
/* Replace paths a -> b -> ... -> c with a -> c */ BEGIN { edge_t e; node_t n, prv, nxt; } N [(indegree == 1) && (outdegree == 1)] { e = fstin ($); prv = e.tail; e = fstout ($); nxt = e.head; delete ($G,$); while ((prv.indegree == 1) && (prv.outdegree == 0)) { e = fstin (prv); n = e.tail; delete ($G,prv); prv = n; } while ((nxt.indegree == 0) && (nxt.outdegree == 1)) { e = fstout (nxt); n = e.head; delete ($G,nxt); nxt = n; } if (!isEdge (prv,nxt,"")) edge (prv,nxt,""); }
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