From: north <devnull@localhost>
Date: Wed, 1 Feb 2006 20:59:32 +0000 (+0000)
Subject: Fix for accidentally creating parallel edge in constraint graph
X-Git-Tag: LAST_LIBGRAPH~32^2~6807
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=e261e87ac4d448a8672afdb6428486c459dc517f;p=graphviz

Fix for accidentally creating parallel edge in constraint graph
when a cluster has a label.
---

diff --git a/lib/dotgen/position.c b/lib/dotgen/position.c
index 67e40ca48..ce123ec84 100644
--- a/lib/dotgen/position.c
+++ b/lib/dotgen/position.c
@@ -346,10 +346,14 @@ static void make_edge_pairs(graph_t * g)
 static void contain_clustnodes(graph_t * g)
 {
     int c;
+    edge_t	*e;
 
     if (g != g->root) {
 	contain_nodes(g);
-	make_aux_edge(GD_ln(g), GD_rn(g), 1, 128);	/* clust compaction edge */
+	if ((e = find_fast_edge(GD_ln(g),GD_rn(g))))	/* maybe from lrvn()?*/
+	    ED_weight(e) += 128;
+	else
+	    make_aux_edge(GD_ln(g), GD_rn(g), 1, 128);	/* clust compaction edge */
     }
     for (c = 1; c <= GD_n_cluster(g); c++)
 	contain_clustnodes(GD_clust(g)[c]);