mapnik/tests/visual_tests/styles/text-bug2037.xml

<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE Map>
<Map background-color="white" srs="+proj=latlong +datum=WGS84">
    <Layer name="layer" srs="+proj=latlong +datum=WGS84">
            <StyleName>My Style</StyleName>
            <Datasource>
                <Parameter name="type">csv</Parameter>
                <Parameter name="file">../data/points.csv</Parameter>
            </Datasource>
    </Layer>
    <Style name="My Style">
        <Rule>
            <Filter>[nr] = 3</Filter>
            <TextSymbolizer wrap-width="20" face-name="DejaVu Sans Book" size="9"  wrap-before="true">"abcdef&#10;ghijkl&#10;mnopq&#10;stuv&#10;wxyz"</TextSymbolizer>
        </Rule>
        <Rule>
            <Filter>[nr] = 4</Filter>
            <TextSymbolizer wrap-width="20" face-name="DejaVu Sans Book" size="9" wrap-before="false">"abcdef&#10;ghijkl&#10;mnopq&#10;stuv&#10;wxyz"</TextSymbolizer>
        </Rule>
        <Rule>
            <Filter>[nr] = 7</Filter>
            <TextSymbolizer wrap-width="30" face-name="DejaVu Sans Book" size="9" wrap-before="true">"Some test text with&#10;forced&#10;line breaks"</TextSymbolizer>
        </Rule>
        <Rule>
            <Filter>[nr] = 8</Filter>
            <TextSymbolizer wrap-width="30" face-name="DejaVu Sans Book" size="9" wrap-before="false">"Some test text with&#10;forced&#10;line breaks"</TextSymbolizer>
        </Rule>

    </Style>
</Map>