message: Make sure math syntax include $base and not $self
  This closes
diff: </dict>
  <dict>
  <key>include</key>
  - <string>$self</string>
  + <string>$base</string>
  </dict>
  </array>
  </dict>
  </dict>
  <dict>
  <key>include</key>
  - <string>$self</string>
  + <string>$base</string>
  </dict>
  </array>
  </dict>
  </dict>
  <dict>
  <key>include</key>
  - <string>$self</string>
  + <string>$base</string>
  </dict>
  </array>
  </dict>
  