[Pkg-cups-devel] Bug#440256: cups don't do language negotiation

[Lu Xuxiao]

I experiment to toggle some fields in firefox' http request, and
find that it's the Accept-Language field which break ipp down.
Further dig into scheduler/client.c make it clear that cups
do not treat Accept-Language field completely, it just take
the first candidate from the priority list. So if your highest
priority language is broken or absent in cupsys, your http request
may fail in some condition.

The work around include use en (or any other working language in cupsys)
as your highest priority language, or modify scheduler/client.c
yousrself to make it stick to a working language.