Method update

src/server/web/public/terminal.js:1584–1588

(e3, t3, i3, s2 = false)

            this.hasSelection = false, this.columnSelectMode = false, this.viewportStartRow = 0, this.viewportEndRow = 0, this.viewportCappedStartRow = 0, this.viewportCappedEndRow = 0, this.startCol = 0, this.endCol = 0, this.selectionStart = void 0, this.selectionEnd = void 0;
          }
          update(e3, t3, i3, s2 = false) {
            if (this.selectionStart = t3, this.selectionEnd = i3, !t3 || !i3 || t3[0] === i3[0] && t3[1] === i3[1]) return void this.clear();
            const r = e3.buffers.active.ydisp, n = t3[1] - r, o = i3[1] - r, a = Math.max(n, 0), h = Math.min(o, e3.rows - 1);
            a >= e3.rows || h < 0 ? this.clear() : (this.hasSelection = true, this.columnSelectMode = s2, this.viewportStartRow = n, this.viewportEndRow = o, this.viewportCappedStartRow = a, this.viewportCappedEndRow = h, this.startCol = t3[0], this.endCol = i3[0]);
          }
          isCellSelected(e3, t3, i3) {
            return !!this.hasSelection && (i3 -= e3.buffer.active.viewportY, this.columnSelectMode ? this.startCol <= this.endCol ? t3 >= this.startCol && i3 >= this.viewportCappedStartRow && t3 < this.endCol && i3 <= this.viewportCappedEndRow : t3 < this.startCol && i3 >= this.viewportCappedStartRow && t3 >= this.endCol && i3 <= this.viewportCappedEndRow : i3 > this.viewportStartRow && i3 < this.viewportEndRow || this.viewportStartRow === this.viewportEndRow && i3 === this.viewportStartRow && t3 >= this.startCol && t3 < this.endCol || this.viewportStartRow < this.viewportEndRow && i3 === this.viewportEndRow && t3 < this.endCol || this.viewportStartRow < this.viewportEndRow && i3 === this.viewportStartRow && t3 >= this.startCol);
          }