Index: source/blender/python/api2_2x/Mesh.c
===================================================================
RCS file: /cvsroot/bf-blender/blender/source/blender/python/api2_2x/Mesh.c,v
retrieving revision 1.73
diff -p -u -r1.73 Mesh.c
--- source/blender/python/api2_2x/Mesh.c	22 Aug 2006 18:08:57 -0000	1.73
+++ source/blender/python/api2_2x/Mesh.c	24 Aug 2006 14:50:45 -0000
@@ -4594,7 +4594,8 @@ static PyObject *MFaceSeq_nextIter( BPy_
  *
  ************************************************************************/
 
-static PyObject *MFaceSeq_extend( BPy_MEdgeSeq * self, PyObject *args )
+static PyObject *MFaceSeq_extend( BPy_MEdgeSeq * self, PyObject *args,
+	  PyObject *keywds )
 {
 	/*
 	 * (a) check input for valid edge objects, faces which consist of
@@ -4615,6 +4616,7 @@ static PyObject *MFaceSeq_extend( BPy_ME
 	PyObject *tmp;
 	MFace *tmpface;
 	Mesh *mesh = self->mesh;
+	int ignore_dups = 0;
 
 	/* before we try to add faces, add edges; if it fails; exit */
 
@@ -4622,6 +4624,15 @@ static PyObject *MFaceSeq_extend( BPy_ME
 	if( !tmp )
 		return NULL;
 
+	if( keywds ) {
+		PyObject *res = PyDict_GetItemString( keywds, "ignore" );
+
+		if( !res )
+			return EXPP_ReturnPyObjError( PyExc_TypeError,
+					"invalid keyword" );
+		ignore_dups = PyObject_IsTrue( res );
+	}
+
 	Py_DECREF( tmp );
 
 	/* make sure we get a tuple of sequences of something */
@@ -4788,18 +4799,20 @@ static PyObject *MFaceSeq_extend( BPy_ME
 
 	tmppair = newpair;	/* "last good edge" */
 	tmppair2 = &tmppair[1];	/* "current candidate edge" */
-	for( i = 0; i < new_face_count; ++i ) {
-		if( mface_comp( tmppair, tmppair2 ) )
-			tmppair = tmppair2;	/* last != current, so current == last */
-		else {
-			tmppair2->v[1] = 0; /* last == current, so mark as duplicate */
-			--good_faces;		/* one less good face */
+	if( !ignore_dups ) {
+		for( i = 0; i < new_face_count; ++i ) {
+			if( mface_comp( tmppair, tmppair2 ) )
+				tmppair = tmppair2;	/* last != current, so current == last */
+			else {
+				tmppair2->v[1] = 0; /* last == current, so mark as duplicate */
+				--good_faces;		/* one less good face */
+			}
+			tmppair2++;
 		}
-		tmppair2++;
 	}
 
 	/* if mesh has faces, see if any of the new faces are already in it */
-	if( mesh->totface ) {
+	if( mesh->totface && !ignore_dups ) {
 		oldpair = (SrchFaces *)MEM_callocN( sizeof(SrchFaces)*mesh->totface,
 				"MFacePairs" );