2005-02-28  Morten Welinder  <terra@gnome.org>

	* src/rendered-value.c (rendered_value_render): For numbers, map
	'-' to U2212 which has same width as "+".

	* src/gnm-format.h: Define a bunch of unicode characters by name.
	* src/parser.y (yylex): Use these.
	* src/cell-draw.c (cell_calc_layout): Ditto.