/usr/share/gtk-engines/mist.xml is in gtk2-engines 1:2.20.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | <?xml version="1.0" encoding="UTF-8"?>
<engine schema_version="0.1" module_name="mist" long_name="Mist">
<metainfo>
<version>2.20.2</version>
<website>http://www.gnome.org</website>
<author>
<name>Dave Camp</name>
<email>dave@ximian.com</email>
</author>
<author>
<name>Andrew Johnson</name>
<email>ajgenius@ajgenius.us</email>
</author>
</metainfo>
</engine>
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