I want to remove all Placemarks from a KML file that contain the element <tessellate>. The following block should be wholly removed:

<Placemark>
    <styleUrl>#m_ylw-pushpin330</styleUrl>
    <LineString>
        <tessellate>1</tessellate>
        <coordinates>
            0.0000000000000,0.0000000000000,0 0.0000000000000,0.0000000000000,0
        </coordinates>
    </LineString>
</Placemark>

I have tried some non-greedy perl regex with no luck (a lot of stuff is removed together with the first <Placemark>):

sed -r ':a; N; $!ba; s/\n\t*//g' myplaces.kml |
perl -pe 's|<Placemark>.*?<tessellate>.*?</Placemark>||g'

I believe a XML parser is the way to go, but I read the documentation for xmlstarlet and got nowhere. So any solutions in xmlstarlet, python, etc. are welcome!

I want to remove all Placemarks from a KML file that contain the element <tessellate>. The following block should be wholly removed:

<Placemark>
    <styleUrl>#m_ylw-pushpin330</styleUrl>
    <LineString>
        <tessellate>1</tessellate>
        <coordinates>
            0.0000000000000,0.0000000000000,0 0.0000000000000,0.0000000000000,0
        </coordinates>
    </LineString>
</Placemark>

I have tried some non-greedy perl regex with no luck (a lot of stuff is removed together with the first <Placemark>):

sed -r ':a; N; $!ba; s/\n\t*//g' myplaces.kml |
perl -pe 's|<Placemark>.*?<tessellate>.*?</Placemark>||g'

I believe a XML parser is the way to go, but I read the documentation for xmlstarlet and got nowhere. So any solutions in xmlstarlet, python, etc. are also welcome!