+ <!-- These environment variables are only used when CUPS is compiled
+ with --enable-debug-printfs -->
+ <key>EnvironmentVariables</key>
+ <dict>
+ <key>CUPS_DEBUG_LOG</key>
+ <string>/var/log/cups/debug_log</string>
+ <key>CUPS_DEBUG_LEVEL</key>
+ <string>3</string>
+ <key>CUPS_DEBUG_FILTER</key>
+ <string>^(http|_http|ipp|_ipp|mime).*</string>
+ </dict>