From de762ae55590cae8339d01a81ac84af82f104aef Mon Sep 17 00:00:00 2001
From: Ken Hughes <khughes@pacific.edu>
Date: Thu, 24 Aug 2006 19:28:36 +0000
Subject: [PATCH] ===Python API=== Bugfix: Mesh.faces.extend() would
 incorrectly add duplicate faces in some circumstances.

---
 source/blender/python/api2_2x/Mesh.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/source/blender/python/api2_2x/Mesh.c b/source/blender/python/api2_2x/Mesh.c
index 926b4f4add1..978e679e8af 100644
--- a/source/blender/python/api2_2x/Mesh.c
+++ b/source/blender/python/api2_2x/Mesh.c
@@ -4837,13 +4837,15 @@ static PyObject *MFaceSeq_extend( BPy_MEdgeSeq * self, PyObject *args )
 
 	/* eliminate new faces already in the mesh */
 		tmppair = newpair;
-		for( i = good_faces; i-- ; ) {
+		i = good_faces;
+		while( i ) {
 			if( tmppair->v[1] ) {
 				if( bsearch( tmppair, oldpair, mesh->totface, 
 						sizeof(SrchFaces), mface_comp ) ) {
 					tmppair->v[1] = 0;	/* mark as duplicate */
 					--good_faces;
-				} 
+				}
+				--i;
 			}
 			tmppair++;
 		}