get-position in text%

Returns the current selection range in positions. See also get-start-position and get-end-position.

• (send a-text get-position start end) -> void
     start : boxed exact non-negative integer or #f
   end = #f : boxed exact non-negative integer or #f

  The start box is filled with the starting position of the selection, unless start is #f. The end box is filled with the ending position of the selection, unless end is #f.