Method insertCells

src/common/buffer/BufferLine.ts:256–282

(pos: number, n: number, fillCellData: ICellData)

  }

  public insertCells(pos: number, n: number, fillCellData: ICellData): void {
    pos %= this.length;

    // handle fullwidth at pos: reset cell one to the left if pos is second cell of a wide char
    if (pos && this.getWidth(pos - 1) === 2) {
      this.setCellFromCodepoint(pos - 1, 0, 1, fillCellData);
    }

    if (n < this.length - pos) {
      const cell = new CellData();
      for (let i = this.length - pos - n - 1; i >= 0; --i) {
        this.setCell(pos + n + i, this.loadCell(pos + i, cell));
      }
      for (let i = 0; i < n; ++i) {
        this.setCell(pos + i, fillCellData);
      }
    } else {
      for (let i = pos; i < this.length; ++i) {
        this.setCell(i, fillCellData);
      }
    }

    // handle fullwidth at line end: reset last cell if it is first cell of a wide char
    if (this.getWidth(this.length - 1) === 2) {
      this.setCellFromCodepoint(this.length - 1, 0, 1, fillCellData);
    }
  }

  public deleteCells(pos: number, n: number, fillCellData: ICellData): void {
    pos %= this.length;