bootstrap 2 sass grid mixin namespaced override

_mixins.scss

@import "twitter/css/_mixins";

// GRID
// --------------------------------------------------
// The Grid
@mixin grid-core($gridColumnWidth, $gridGutterWidth, $ns:'') {
  .#{$ns}row {
    margin-left: $gridGutterWidth * -1;
    @include clearfix();
  }

  [class*="#{$ns}span"] {
    float: left;
    min-height: 1px; // prevent collapsing columns
    margin-left: $gridGutterWidth;
  }

  // Set the container width, and override it for fixed navbars in media queries
  .#{$ns}container,
  .#{$ns}navbar-static-top .#{$ns}container,
  .#{$ns}navbar-fixed-top .#{$ns}container,
  .#{$ns}navbar-fixed-bottom .#{$ns}container {
    @include grid-core-span($gridColumns, $gridColumnWidth, $gridGutterWidth);
  }

  // generate .spanX and .offsetX
  @include grid-core-span-x($gridColumns, $gridColumnWidth, $gridGutterWidth, $ns);
  @include grid-core-offset-x($gridColumns, $gridColumnWidth, $gridGutterWidth, $ns);
}

@mixin grid-core-span-x($gridColumns, $gridColumnWidth, $gridGutterWidth, $ns) {
  @while $gridColumns > 0 {
    .#{$ns}span#{$gridColumns} { @include grid-core-span($gridColumns, $gridColumnWidth, $gridGutterWidth)}
    $gridColumns: $gridColumns - 1;
  }
}

@mixin grid-core-offset-x($gridColumns, $gridColumnWidth, $gridGutterWidth, $ns) {
  @while $gridColumns > 0 {
    .#{$ns}offset#{$gridColumns} { @include grid-core-offset($gridColumns, $gridColumnWidth, $gridGutterWidth); }
    $gridColumns: $gridColumns - 1;
  }
}

@mixin grid-fluid($fluidGridColumnWidth, $fluidGridGutterWidth, $ns:'') {
  .#{$ns}row-fluid {
    width: 100%;
    @include clearfix();
    [class*="#{$ns}span"] {
      @include input-block-level();
      float: left;
      margin-left: $fluidGridGutterWidth;
      *margin-left: $fluidGridGutterWidth - (.5 / $gridRowWidth * 100px * 1%);
    }
    [class*="#{$ns}span"]:first-child {
      margin-left: 0;
    }

    // Space grid-sized controls properly if multiple per line
    .#{$ns}controls-row [class*="#{$ns}span"] + [class*="#{$ns}span"] {
      margin-left: $fluidGridGutterWidth;
    }

    // generate .spanX and .offsetX
    @include grid-fluid-span-x($gridColumns, $fluidGridColumnWidth, $fluidGridGutterWidth, $ns);
    @include grid-fluid-offset-x($gridColumns, $fluidGridColumnWidth, $fluidGridGutterWidth, $ns);
  }
}

@mixin grid-fluid-span-x($gridColumns, $fluidGridColumnWidth, $fluidGridGutterWidth, $ns) {
  @while $gridColumns > 0 {
    .#{$ns}span#{$gridColumns} { @include grid-fluid-span($gridColumns, $fluidGridColumnWidth, $fluidGridGutterWidth); }
    $gridColumns: $gridColumns - 1;
  }
}

@mixin grid-fluid-offset-x($gridColumns, $fluidGridColumnWidth, $fluidGridGutterWidth, $ns) {
  @while $gridColumns > 0 {
    .#{$ns}offset#{$gridColumns} { @include grid-fluid-offset($gridColumns, $fluidGridColumnWidth, $fluidGridGutterWidth); }
    .#{$ns}offset#{$gridColumns}:first-child { @include grid-fluid-offset-first-child($gridColumns, $fluidGridColumnWidth, $fluidGridGutterWidth); }
    $gridColumns: $gridColumns - 1;
  }
}