Encoding problem

Danny Kao (danny(dot)kao(at)autotools(dot)com(dot)tw) reports a bug with a severity of 2
The lower the number the more severe it is.

Short Description
Encoding problem

Long Description
I have tried "initdb --encoding=BIG5"
then doing some create table and insert.
As shows below,it seems loss one byte "\",
and dumping data is the same.
How could I got the right result?

Sample Code
Welcome to psql, the PostgreSQL interactive terminal.

Type: \copyright for distribution terms
\h for help with SQL commands
\? for help on internal slash commands
\g or terminate with semicolon to execute query
\q to quit

template1=# \encoding
BIG5
template1=# create table a (a text);
CREATE
template1=# insert into a values('\h');
INSERT 18761 1
template1=# select * from a;
a
-----
h
(1 row)

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