Meta data available to filters?

Hi!

If I set up a filter, is there a way from my filter script to know the name 
or identity of the file that I am processing?

I get the data on standard in and output the changed data on standard out, 
but is there any way to get access to meta data?


I find the documentation on filters a bit terse. Once I figure out how they 
actually work, I may be inclined to send a documentation patch. A minimum 
would be to document their existence on the git-config manual page (with 
reference to gitattributes), it took me some time to find it :-)

-- 
\\// Peter - http://www.softwolves.pp.se/