Z39.50: different query and marc charsets

[nunojsilva at ist.utl.pt]

Hello,

Some Z39.50 servers available around here seem to use different
encodings for search queries and marc entries.

For example, catalogo.bnportugal.pt which accepts latin1 for search
queries but uses ISO-5426 for database entries. In yaz-client, I am able
to interact with this server by explicitly setting these character
encodings:

    marccharset iso5426
    querycharset latin1
    open catalogo.bnportugal.pt


But in Tellico there is only one "character set" option, so either
non-ASCII searches don't work or non-ASCII content in the results is
garbled. Looking at the code (If I am looking in the right place -
z3950connection.cpp?), it seems it's not possible to set separate
encodings for incoming and outgoing data (m_sourceCharSet is used for
both?).

Would it be possible to allow the use of different encodings in a
situation like this?

(To configure this server in Tellico: format is UNIMARC, database name
is "bn".)

-- 
Thanks,
Nuno Silva