Fix T75128: Select Linked fails when the selection is a delimiter

Starting select linked failed when the selected vertex or edge
was it's self delimiting.

Support using these elements for linked select
as long as they're part of an isolated selection.

1 files changed, 16 insertions, 0 deletions

diff --git a/source/blender/bmesh/intern/bmesh_query.c b/source/blender/bmesh/intern/bmesh_query.c
index e3b6e243906..64950411fed 100644
--- a/source/blender/bmesh/intern/bmesh_query.c
+++ b/source/blender/bmesh/intern/bmesh_query.c
@@ -2431,6 +2431,22 @@ bool BM_edge_is_all_face_flag_test(const BMEdge *e, const char hflag, const bool
   return true;
 }
 
+bool BM_edge_is_any_face_flag_test(const BMEdge *e, const char hflag)
+{
+  if (e->l) {
+    BMLoop *l_iter, *l_first;
+
+    l_iter = l_first = e->l;
+    do {
+      if (BM_elem_flag_test(l_iter->f, hflag)) {
+        return true;
+      }
+    } while ((l_iter = l_iter->radial_next) != l_first);
+  }
+
+  return false;
+}
+
 /* convenience functions for checking flags */
 bool BM_edge_is_any_vert_flag_test(const BMEdge *e, const char hflag)
 {