#107126: Make FCurve.update() also deduplicate keys

The RNA function `FCurve.update()` now also deduplicates keys. This is done
in a way that is independent of key selection; simply the last key in the
list of keyframes 'wins' and overwrites earlier ones. It is exactly the
same as `FCurve.keyframe_points.deduplicate()`.

scripts/modules/bpy_extras/anim_utils.py

@@ -571,8 +571,6 @@ class KeyframesCo:
             keyframe_points.foreach_set("co", co_buffer)
             keyframe_points.foreach_set("interpolation", ipo_buffer)
 
-            # TODO: in Blender 4.0 the next lines can be replaced with one call to `fcurve.update()`.
-            # See https://projects.blender.org/blender/blender/issues/107126 for more info.
-            keyframe_points.sort()
-            keyframe_points.deduplicate()
-            keyframe_points.handles_recalc()
+            # This also deduplicates keys where baked keys were inserted on the
+            # same frame as existing ones.
+            fcurve.update()

source/blender/makesrna/intern/rna_fcurve.c

@@ -694,7 +694,7 @@ static void rna_tag_animation_update(Main *bmain, ID *id)
 static void rna_FCurve_update_data_ex(ID *id, FCurve *fcu, Main *bmain)
 {
   sort_time_fcurve(fcu);
-  /* TODO: Blender 4.0 should call BKE_fcurve_deduplicate_keys(fcu) here. */
+  BKE_fcurve_deduplicate_keys(fcu);
   BKE_fcurve_handles_recalc(fcu);
 
   rna_tag_animation_update(bmain, id);