text/html; w3m -I %{charset} -T text/html; copiousoutput;
application/pdf; pdftotext '%s' -; copiousoutput;
application/msword; libreoffice --headless --cat '%s'; copiousoutput;
+application/ics; khal printics '%s'; copiousoutput;
application/vnd.openxmlformats-officedocument.wordprocessingml.document; libreoffice --headless --cat '%s'; copiousoutput;
application/vnd.oasis.opendocument.text; libreoffice --headless --cat '%s'; copiousoutput;