carto/test/rendering-mss/issue_284.xml

<Style name="style" filter-mode="first">
  <Rule>
    <Filter>([foo] = 'bar') and ([type] = 'primary')</Filter>
    <LineSymbolizer stroke-width="10" stroke="#ff0000" />
  </Rule>
  <Rule>
    <Filter>([foo] = 'bar')</Filter>
    <LineSymbolizer stroke-width="10" />
  </Rule>
  <Rule>
    <Filter>([type] = 'primary')</Filter>
    <LineSymbolizer stroke="#ff0000" />
  </Rule>
</Style>
<Style name="style-outline" filter-mode="first">
  <Rule>
    <Filter>([foo] = 'bar') and ([type] = 'primary')</Filter>
    <LineSymbolizer stroke-width="10" stroke="#ff0000" />
  </Rule>
  <Rule>
    <Filter>([foo] = 'bar')</Filter>
    <LineSymbolizer stroke-width="10" />
  </Rule>
  <Rule>
    <Filter>([type] = 'primary')</Filter>
    <LineSymbolizer stroke="#ff0000" />
  </Rule>
</Style>