[Mod_gzip] mod_gzip and strange vary headers

[mod_gzip@lists.over.net]

hi, I am using mod_gzip 1.3.26.1a and apache 1.3.29.
if I define rules like
mod_gzip_item_include  reqheader  "Accept-Language: en"
mod_gzip_item_include  reqheader  "Accept-Charset: dummy"

then I see as the response of the server:

Vary: Accept-Encoding,Accept-Lan,Accept-Cha

it seems as if mod_gzip only includes 10 characters for the the different
headers in vary (with exception of accept-encoding).

once I even had a vary header like 
Vary: Accept-Encoding,U

is this a bug or has somebody else encountered the same behaviour. it causes
problems with a cache like squid, because the cache checks for
Acceipt-Language and not for Accept-Lan.

Any ideas?

Thx in advance,
alpheus

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