import { split } from "lib/Array.cms";

input = InputBox("削除する行を指定してください。");

p = pos(input, "-");
if (p > 0) {
  start = left(input, p - 1) - 1;
  deleteCount = mid(input, p + 1) - start;
} else {
  start = input - 1;
  deleteCount = 1;
}

array = split([x,y], "\n");
array.splice(start, deleteCount);
[x,y] = array.join("\n");