CREATE CHARSET would be nice feature

Hi all,
I had to get data out of postgresql in CP852 encoding (internally stored in UNICODE).
So I wrote my own encoding function and used CREATE DEFAULT ENCODING.
The problem with this is:
I can only use character set names which are known internally.
So I "misused" the LATIN2:

update pg_conversion set condefault=false where conname='iso_8859_2_to_utf8';
update pg_conversion set condefault=false where conname='utf8_to_iso_8859_2';
CREATE DEFAULT CONVERSION utf82cp852 FOR 'UNICODE' TO 'LATIN2' FROM utf82cp852;
CREATE DEFAULT CONVERSION cp8522utf8 FOR 'LATIN2' TO 'UNICODE' FROM cp8522utf8;

I do not understand why there is a CREATE CONVERSION without a CREATE CHARSET
since everybody using it has to misuse existing charset names.

So, a nice feature would be to let user create their own character set names.
In this case I could write:
CREATE CHARSET CP852;
CREATE DEFAULT CONVERSION utf82cp852 FOR 'UNICODE' TO 'CP852' FROM utf82cp852;
CREATE DEFAULT CONVERSION cp8522utf8 FOR 'CP852' TO 'UNICODE' FROM cp8522utf8;
and I would not need to update the pg_conversion table and I would be able
to use LATIN2 and CP852 in parallel.

Are there actually plans for this?

If this is not the case, is there a table which maps values for
pg_conversion.conforencoding / pg_conversion.contoencoding
to the names given as source_encoding/dest_encoding and where I can add one row?

Regards,
Michael

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