Show Shift+stroke as a smoothing action in the Undo History

In Sculpt Mode, I would prefer that when I use the Shift key to smooth, this action should appear in the Undo History as either "Smooth Brush" or "Smooth Mask" (depending on whether I am smoothing the shape of the object or I have the Mask Brush active and I am smoothing the mask). Currently, such smoothing actions appear in the Undo History as strokes of the active brush. I make heavy use of the Undo History when sculpting, and sometimes I make such subtle strokes that it becomes hard to find what I am undoing, so it would be helpful to at least have my smoothing actions clearly labeled in the Undo History.