Re: [gnu.org #701121] Duplicate content?

[Peter O'Gorman via RT]

On 10/24/2011 11:05 AM, Jason Self via RT wrote:
> Josh wrote:
>> Hi,
>>
>> I search the Emacs manual using Google's "site:" operator. For example:
>>
>> http://www.google.com/search?q=site:www.gnu.org/software/emacs+EXAMPLE
>>
>> I've been noticing that pages in the manual don't always show up in the
>> search results when I use this method. For example, when I search the
>> manual for "refill", the Refill page doesn't show up:
>>
>> http://www.google.com/search?q=site:www.gnu.org/software/emacs+refill
>>
>> I think this may be due to the fact that the Emacs manual is shown via
>> multiple distinct URLs, which Google perceives as duplicate content:
>>
>> http://www.gnu.org/software/emacs/manual/html_node/emacs/
>> http://www.gnu.org/software/libtool/manual/emacs/
>>
>> Here's an article that addresses the problem of duplicate content:
>>
>> http://www.google.com/support/webmasters/bin/answer.py?answer=66359
>>
>> Thanks for maintaining gnu.org. It's one of the most useful sites on the
>> web.
>>
>> Take care,
>> Josh
>
> Hello libtool maintainers, just forwarding the above feedback to you for
> your consideration. Perhaps one option might be linking to the GNU Emacs
> manual instead of maintaining an independent copy?

Do we control this? Using curl I see it redirect with a 301:

* Connected to www.gnu.org (140.186.70.148) port 80 (#0)
 > GET /software/libtool/manual/emacs HTTP/1.1
 > User-Agent: curl/7.21.0 (x86_64-redhat-linux-gnu) libcurl/7.21.0 
NSS/3.12.10.0 zlib/1.2.5 libidn/1.18 libssh2/1.2.4
 > Host: www.gnu.org
 > Accept: */*
 >
< HTTP/1.1 301 Moved Permanently
< Date: Mon, 24 Oct 2011 18:51:19 GMT
< Server: Apache/2.2.14
< Location: http://www.gnu.org/software/emacs/manual/html_node/emacs/
< Cache-Control: max-age=0
< Expires: Mon, 24 Oct 2011 18:51:19 GMT
< Vary: Accept-Encoding
< Content-Length: 333
< Content-Type: text/html; charset=iso-8859-1

I don't see 'emacs' in libtool's web cvs:

http://web.cvs.savannah.gnu.org/viewvc/libtool/manual/?root=libtool

Peter