Commit: 69cdddd4cf3ebe5987477399effabff892233608
Author: Campbell Barton
Date:   Wed Nov 25 11:28:25 2015 +1100
Branches: master
https://developer.blender.org/rB69cdddd4cf3ebe5987477399effabff892233608

Fix error in recent check for duplicate tris

===================================================================

M       source/blender/bmesh/intern/bmesh_polygon.c

===================================================================

diff --git a/source/blender/bmesh/intern/bmesh_polygon.c 
b/source/blender/bmesh/intern/bmesh_polygon.c
index 1b1b133..af0331d 100644
--- a/source/blender/bmesh/intern/bmesh_polygon.c
+++ b/source/blender/bmesh/intern/bmesh_polygon.c
@@ -940,14 +940,10 @@ void BM_face_triangulate(
                        if (l_new->radial_next != l_new) {
                                BMLoop *l_iter = l_new->radial_next;
                                do {
-                                       if (UNLIKELY(l_new->prev->v == 
l_iter->prev->v)) {
-                                               if (UNLIKELY(i == last_tri)) {
-                                                       /* Because we swap last 
f_new with f at the end... */
-                                                       
BLI_linklist_prepend(r_faces_double, f);
-                                               }
-                                               else {
-                                                       
BLI_linklist_prepend(r_faces_double, f_new);
-                                               }
+                                       if (UNLIKELY((l_iter->f->len == 3) && 
(l_new->prev->v == l_iter->prev->v))) {
+                                               /* Check the last tri because 
we swap last f_new with f at the end... */
+                                               
BLI_linklist_prepend(r_faces_double, (i != last_tri) ? f_new : f);
+                                               break;
                                        }
                                } while ((l_iter = l_iter->radial_next) != 
l_new);
                        }

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