[Bug-tar] A possible bug in Cygwin tar?

[Robert Miles]

I've found what might be a bug with either tar or the
nocem.0.93.tar.tar file - but I'm too unfamiliar with Linux
to be sure.

I downloaded it under 64-bit Windows Vista, then copied it
to a Cygwin directory (Cygwin provides Linux emulation
under Windows).  The Cygwin version of tar is unable to
recognize it as a valid tar file.

$ tar -tvf nocem-0.93.tar.tar
tar: This does not look like a tar archive
tar: Skipping to next header
tar: Exiting with failure status due to previous errors

I'm trying to check how practical it is to port this program
to Cygwin, and therefore make it capable of running under
Windows.

I haven't yet found a way of downloading it directly under
Cygwin.

Any idea what went wrong?