I am unable to confirm it under coreutils version 6.10-3ubuntu2.
man cat gives the following:
...
SEE ALSO
The full documentation for cat is maintained as a Texinfo manual. If
the info and cat programs are properly installed at your site, the
command
info coreutils ’cat invocation’
should give you access to the complete manual.
--
all man pages refer to non-existent info pages
https://bugs.launchpad.net/bugs/239133
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