2001-02-24  Jody Goldberg <jgoldberg@home.com>

	* src/format.c (format_number) : Invert the logic if this test.
	  We increment again later.  So what we really want is to avoid double
	  incrementing and avoid incrementing past the end.

	* src/cellspan.c (cell_calc_span) : rework when to increment
	  boundaries.  It is important not to have a span end in a hidden
	  column or it will not be drawn.  As such we need to be careful to
	  only increment the margin args when a bound extends into a visible
	  column.

	* src/sheet.c (sheet_regen_adjacent_spans) : check for spans before
	  cells in case we are cutting off the span at its core.

	* src/colrow.c (colrow_set_visibility_list) : set all visibilities
	  before regening spans.

	* src/cell-draw.c (cell_draw) : Add some warnings for cols/rows that
	  are too small.