filtering search results based on language

[Deepa Devanathan <De...@caritor.com>]

Hi,

I am a newbie to Nutch .. need some help with my search results ..

I have a common index for some english as well as french htmls .. I read 
on the mail archives that 
1. by activating the language identifier plugin in nutch-default.xml and 
2. adding the advisory attribute lang:fr to the query, I can filter out 
results from my french pages alone.

I have done these but still am not able to filter the results . My search 
page now looks like : 

Search for "mail lang:fr" returned 0 results .

is this an indicator that the lang:fr has not been recognized ?

Am i to add any other attributes in the French htmls ? like a language 
attrib ?If so what ?

Please help.

Thanks :),
Deepa