Redundant information saved in SVG

[timsat]

If i'm not missing something then the generated SVG draws white space over a white background, so what the library generates:

        ...
        <rect width="100%" height="100%" style="fill:white"/>
        <rect x="6.400mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:black;"/>
        <rect x="6.600mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:white;"/>
        <rect x="6.800mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:black;"/>
        <rect x="7.000mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:white;"/>
        <rect x="7.200mm" y="1.000mm" width="0.500mm" height="7.000mm" style="fill:black;"/>
        <rect x="7.700mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:white;"/>
        <rect x="7.900mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:black;"/>
        <rect x="8.100mm" y="1.000mm" width="0.500mm" height="7.000mm" style="fill:white;"/>
        <rect x="8.600mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:black;"/>
        <rect x="8.800mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:white;"/>
        <rect x="9.000mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:black;"/>
        <rect x="9.200mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:white;"/>
        <rect x="9.400mm" y="1.000mm" width="0.500mm" height="7.000mm" style="fill:black;"/>
        <rect x="9.900mm" y="1.000mm" width="0.500mm" height="7.000mm" style="fill:white;"/>
        ...

would be rendered exactly the same as this (without explicit white stripes in between):

        ...
        <rect width="100%" height="100%" style="fill:white"/>
        <rect x="6.400mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:black;"/>
        <rect x="6.800mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:black;"/>
        <rect x="7.200mm" y="1.000mm" width="0.500mm" height="7.000mm" style="fill:black;"/>
        <rect x="7.900mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:black;"/>
        <rect x="8.600mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:black;"/>
        <rect x="9.000mm" y="1.000mm" width="0.200mm" height="7.000mm" style="fill:black;"/>
        <rect x="9.400mm" y="1.000mm" width="0.500mm" height="7.000mm" style="fill:black;"/>
        ...

If my understanding is correct i can submit the MR to optimize SVG output.
Thanks for sharing such a useful project with everybody!