Hanzi Pinyin Font from multiple <svg:text> elements to a single <svg:path> (Union path operations)

input-丂-x4E02.svg

<?xml version="1.0"?>
<!-- Created with Inkscape (http://www.inkscape.org/) -->
<svg xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:cc="http://creativecommons.org/ns#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:svg="http://www.w3.org/2000/svg" xmlns="http://www.w3.org/2000/svg" xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd" xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" version="1.0" width="1000" height="1000" id="gid" inkscape:version="0.48.3.1 r9886" inkscape:output_extension="org.inkscape.output.svg.inkscape">
  <metadata id="metadata5594">
    <rdf:RDF>
      <cc:Work rdf:about="">
        <dc:format>image/svg+xml</dc:format>
        <dc:type rdf:resource="http://purl.org/dc/dcmitype/StillImage"/>
        <dc:title/>
      </cc:Work>
    </rdf:RDF>
  </metadata>
  <defs id="defs5498">
    <inkscape:perspective sodipodi:type="inkscape:persp3d" inkscape:vp_x="0 : 500 : 1" inkscape:vp_y="0 : 1000 : 0" inkscape:vp_z="1000 : 500 : 1" inkscape:persp3d-origin="500 : 333.33333 : 1" id="perspective3931"/>
    <font horiz-adv-x="1024" id="font3933" inkscape:label="Hanzi-Pinyin Font">
      <font-face units-per-em="1024" id="font-face3935" font-family="Hanzi-Pinyin Font"/>
      <missing-glyph d="M0,0h1000v1024h-1000z" id="missing-glyph3937"/>
      <glyph id="font-glyph" glyph-name="U+4E02: &#x4E02;/k&#x1CE;o/" unicode="&#x4E02;" d=""/>
    </font>
  </defs>
  <text xml:space="preserve" style="font-size:800px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:start;fill:#000000;fill-opacity:1;stroke:none;font-family:Droid Sans Fallback;-inkscape-font-specification:Droid Sans Fallback" x="-40.625" y="789.0625" id="hanzi"><tspan id="hanzi-glyph" x="-40.625" y="789.0625">丂</tspan></text>
  <text xml:space="preserve" style="font-size:200px;font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;text-align:start;line-height:125%;letter-spacing:0px;word-spacing:0px;writing-mode:lr-tb;text-anchor:start;fill:#000000;fill-opacity:1;stroke:none;font-family:Droid Sans Fallback;-inkscape-font-specification:Droid Sans Fallback" id="pinyin" y="-760.05859" x="414.25781" transform="matrix(0,1,-1,0,0,0)"><tspan id="pinyin-text" x="414.25781" y="-760.05859" style="font-size:300px">kǎo</tspan></text>
</svg>

output-丂-x4E02.svg