nextcloud-desktop/config/csync_log.conf

<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE log4c SYSTEM "">

<log4c version="1.2.1">

  <config>
    <bufsize>0</bufsize>
    <debug level="0"/>
    <nocleanup>0</nocleanup>
  </config>

  <!-- root category ========================================= -->
  <category name="root" priority="none"/>
  <category name="csync.api" priority="notice" appender="stderr"/>
  <category name="csync.config" priority="notice" appender="stderr"/>
  <category name="csync.journal" priority="notice" appender="stderr"/>
  <category name="csync.lock" priority="notice" appender="stderr"/>
  <category name="csync.util" priority="notice" appender="stderr"/>
  <category name="csync.updater" priority="notice" appender="stderr"/>
  <category name="csync.reconciler" priority="notice" appender="stderr"/>
  <category name="csync.propagator" priority="notice" appender="stderr"/>

  <!-- default appenders ===================================== -->
  <appender name="stdout" type="stream" layout="basic"/>
  <appender name="stderr" type="stream" layout="dated"/>
  <appender name="syslog" type="syslog" layout="basic"/>

  <!-- default layouts ======================================= -->
  <layout name="basic" type="basic"/>
  <layout name="dated" type="dated"/>
</log4c>