You can also use the cursor keys to move around the grid. Pressing the
return or space keys will place a \cw{\\} or a \cw{/}, respectively,
-and will then cycle them as above.
+and will then cycle them as above. You can also press \cw{/} or
+\cw{\\} to place a \cw{/} or \cw{\\}, respectively, independent of
+what is already in the cursor square. Backspace removes any line from
+the cursor square.
(All the actions described in \k{common-actions} are also available.)
move_cursor(button, &ui->cur_x, &ui->cur_y, w, h, 0);
ui->cur_visible = 1;
return "";
+ } else if (button == '\\' || button == '\b' || button == '/') {
+ int x = ui->cur_x, y = ui->cur_y;
+ if (button == ("\\" "\b" "/")[state->soln[y*w + x] + 1]) return NULL;
+ sprintf(buf, "%c%d,%d", button == '\b' ? 'C' : button, x, y);
+ return dupstr(buf);
}
if (action != NONE) {