cygwin-api.info.gz and cygwin-ug-net.info.gz look as malformed info file.
It does not parsable by info.exe and emacs.exe and dows not listened in 'dir' file.
They seems do not contain any info specific syntax. But in header written: This is cygwin-ug-net.info, produced by makeinfo version 4.13 from ../../src/texi/cygwin-ug-net.texi. $ cygcheck -c cygwin-doc Cygwin Package Information Package Version Status cygwin-doc 1.7-1 OK Please fix! -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple