strokes-fill-stroke

strokes-fill-stroke is a compiled Lisp function in `strokes.el'.

(strokes-fill-stroke UNFILLED-STROKE &optional FORCE)

Fill in missing grid locations in the list of UNFILLED-STROKE.
If FORCE is non-nil, then fill the stroke even if it's `stroke-click'.
NOTE: This is where the global variable `strokes-last-stroke' is set.