@import "bootstrap.less";

// XLarge screen
@screen-xlg:                  1600px;
@screen-xlg-min:              @screen-xlg;
@screen-xlg-hughdesktop:      @screen-xlg-min;

// So media queries don't overlap when required,provide a maximum
@screen-lg-max:              (@screen-xlg-min - 1);

//== Container sizes
// Large screen / wide desktop
@container-xlarge-desktop:      ((1540px + @grid-gutter-width));
@container-xlg:                 @container-xlarge-desktop;

// Container widths
//
// Set the container width,and override it for fixed navbars in media queries.

.container {
  @media (min-width: @screen-xlg-min) {
    width: @container-xlg;
  }
}

.make-grid-xlgcolumns() {
  // Common styles for all sizes of grid columns,widths 1-12
  .col(@index) when (@index = 1) { // initial
    @item: ~".col-xlg-@{index}";
    .col((@index + 1),@item);
  }
  .col(@index,@list) when (@index =< @grid-columns) { // general; "=<" isn't a typo
    @item: ~".col-xlg-@{index}";
    .col((@index + 1),~"@{list},@{item}");
  }
  .col(@index,@list) when (@index > @grid-columns) { // terminal
    @{list} {
      position: relative;
      // Prevent columns from collapsing when empty
      min-height: 1px;
      // Inner gutter via padding
      padding-left:  (@grid-gutter-width / 2);
      padding-right: (@grid-gutter-width / 2);
    }
  }
  .col(1); // kickstart it
}
.make-grid-xlgcolumns();
.make-grid(xlg);

// Generate the large columns
.make-xlg-column(@columns; @gutter: @grid-gutter-width) {
  position: relative;
  min-height: 1px;
  padding-left:  (@gutter / 2);
  padding-right: (@gutter / 2);

  @media (min-width: @screen-xlg-min) {
    float: left;
    width: percentage((@columns / @grid-columns));
  }
}
.make-xlg-column-offset(@columns) {
  @media (min-width: @screen-xlg-min) {
    margin-left: percentage((@columns / @grid-columns));
  }
}
.make-xlg-column-push(@columns) {
  @media (min-width: @screen-xlg-min) {
    left: percentage((@columns / @grid-columns));
  }
}
.make-xlg-column-pull(@columns) {
  @media (min-width: @screen-xlg-min) {
    right: percentage((@columns / @grid-columns));
  }
}

注意，在上面的代码中，你可以修改.make-grid-columns()mixin而不是.make-grid-xlgcolumns mixin在less / minins / grid-framework.less文件中添加.col-xlg-类前缀。

由于BS 3.2.0，您应该使用自动转换器，以确保您的新编译版本具有与原始编译版本相同的浏览器支持，参见：https://github.com/twbs/bootstrap/issues/13620
要为新代码运行自动修复程序，请在Gruntfile.js中替换引导您的新bootstrapxl.less的bootstrap.less文件引用，并在更改后运行grunt dist。

更新

请注意，上述解决方案仅适用于为较大网格添加列类。请参阅http://stackoverflow.com/a/26963773/1596547添加与默认网格重叠的列或网格。