1999-07-30  Morten Welinder  <terra@diku.dk>

	* src/cell.c (cell_cleanout): New function.
	(cell_set_formula): Don't bother with CELL_ERROR.  Set value field
 	in all cases.
	(cell_set_array_formula): Set cell values.
	(cell_set_value_simple): Simplify using cell_cleanout.
	(cell_set_text_simple): Ditto.
	(cell_set_formula_tree_simple): Ditto.
	(cell_destroy): Ditto.
	(cell_get_text): Simplify.
	(cell_get_content): Ditto.

	* src/eval.c (cell_eval): Reorganise slightly.

	* src/expr.c (eval_expr_real): value should no longer be null.

	* src/cell.h (CELL_ERROR): Obsolete.