rb_define_method(Font, "glyphs", font_glyphs, 0);
rb_define_method(Font, "kerning", font_kerning, 0);
rb_define_method(Font, "get_kerning_table", font_kerning, 0);
rb_define_method(Font, "glyphs", font_glyphs, 0);
rb_define_method(Font, "kerning", font_kerning, 0);
rb_define_method(Font, "get_kerning_table", font_kerning, 0);