grid_peek_line
const struct grid_line *gl = grid_peek_line(gd, py);
gl = grid_peek_line(gd, i);
gl = grid_peek_line(gd, i);
gl = grid_peek_line(gd, y - 1);
gl = grid_peek_line(gd, y);
gl = grid_peek_line(gd, py);
const struct grid_line *grid_peek_line(struct grid *, u_int);
gl = grid_peek_line(src->grid, sy - 1);
gl = grid_peek_line(gd, py);
gl = grid_peek_line(gd, pywrap);
gl = grid_peek_line(gd, pywrap);
gl = grid_peek_line(gd, (*start) - 1);