This file is indexed.

/usr/share/glib-2.0/schemas/org.freedesktop.Tracker.FTS.gschema.xml is in tracker 0.16.2-1ubuntu4.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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<?xml version="1.0" encoding="UTF-8"?>
<schemalist>
  <schema path="/org/freedesktop/tracker/fts/" id="org.freedesktop.Tracker.FTS">

    <key type="i" name="max-word-length">
      <default>30</default>
      <range min="0" max="200"/>
      <summary>Maximum length of a word to be indexed</summary>
      <description>Words with more characters than this length will be ignored by the indexer.</description>
    </key>

    <key type="i" name="max-words-to-index">
      <default>10000</default>
      <summary>Maximum number of words to index in a document</summary>
      <description>Indexer will read only this maximum number of words from a single document.</description>
    </key>

    <key type="b" name="enable-stemmer">
      <summary>Enable stemmer</summary>
      <description>Simplify the words to their root to provide more results. E.g. 'shelves' and 'shelf' to 'shel'</description>
      <default>false</default>
    </key>

    <key type="b" name="enable-unaccent">
      <summary>Enable unaccent</summary>
      <description>Translate accented characters to the equivalent unaccented. E.g. 'Idéa' to 'Idea' for improved matching.</description>
      <default>true</default>
    </key>

    <key type="b" name="ignore-numbers">
      <summary>Ignore numbers</summary>
      <description>If enabled, numbers will not be indexed.</description>
      <default>true</default>
    </key>

    <key type="b" name="ignore-stop-words">
      <summary>Ignore stop words</summary>
      <description>If enabled, the words listed in the stop-words list are ignored. E.g. common words like 'the', 'yes', 'no', etc.</description>
      <default>true</default>
    </key>

  </schema>
</schemalist>