fix [#30651] bpy.ops.object.mode_set(...) editmode removes faces.

problem was that BMesh had tessellation call when undo pushes were called.

if python called an operator with no undo push, tessfaces would not be created.

fix this by making it the responsibility of each editmesh operator to re-tessellate, as it is with notifiers and depsgraph.
added EDBM_update_generic() function to add notifier, tag for depsgraph update and optionally re-tessellate.

1 files changed, 2 insertions, 0 deletions

diff --git a/source/blender/editors/include/ED_mesh.h b/source/blender/editors/include/ED_mesh.h
index 45685740d3b..69376a9bde3 100644
--- a/source/blender/editors/include/ED_mesh.h
+++ b/source/blender/editors/include/ED_mesh.h
@@ -168,6 +168,8 @@ void EDBM_validate_selections(struct BMEditMesh *em);
 void EDBM_hide_mesh(struct BMEditMesh *em, int swap);
 void EDBM_reveal_mesh(struct BMEditMesh *em);
 
+void EDBM_update_generic(struct bContext *C, struct BMEditMesh *em, const short do_tessface);
+
 int			EDBM_check_backbuf(unsigned int index);
 int			EDBM_mask_init_backbuf_border(struct ViewContext *vc, int mcords[][2], short tot, short xmin, short ymin, short xmax, short ymax);
 void		EDBM_free_backbuf(void);