\file and \filenq should not be used in section titles; they are not

sufficiently robust to survive the creation of bookmarks in the PDF
format.

Doc/lib/librobotparser.tex

 \section{\module{robotparser} --- 
-         Parser for \filenq{robots.txt}}
+         Parser for robots.txt}
 
 \declaremodule{standard}{robotparser}
 \modulesynopsis{Accepts as input a list of lines or URL that refers to a