libpgtcl and encoding

While trying to connect to a db w/ SQL_ASCII encoding, from tcl I get:  "ERROR:  Conversion between UNICODE and
SQL_ASCIIis not supported"
 
this happens after an upgrade from 7.1 to 7.2 on a debian woody, connecting  to a database on a RedHat 7.1 w/
postgreSQL7.1.
 

What I cannot understand is that while 

1. trying to connect to other db (SQL_ASCII encoding) on my box (debian)  everithing works (so I would think "my
libpgtcl*can* connect to  SQL_ASCII db),
 

2. if I dump the db and reload it w/ UNICODE encoding I can connect to it

3. from psql I can connect to RedHat SQL_ASCII db from debian woody and SHOW  CLIENT_ENCODING shows it is SQL_ASCII

How can I force libpgtcl to get SQL_ASCII encoding or be sensitive to
PGCLIENTENCODING environment variable? or how else should I solve the
problem?



Thanks in advance
sandro
*:-)


[ I don't know how to get compile option, I couldn't find an option to look
for] 




-- 
Sandro Dentella  *:-)
e-mail: sandro.dentella@tin.it 
http://www.tksql.org                    TkSQL Home page - My GPL work