Add explanation about 'Unrecognized variable client_encoding'

message at startup.

diff --git a/doc/src/sgml/trouble.sgml b/doc/src/sgml/trouble.sgml
index 49a8406c61ebcc609599217d1264ffa9754c6c1b..3e3d962241394240cf39ed44143517b361d67b5c 100644 (file)
--- a/doc/src/sgml/trouble.sgml
+++ b/doc/src/sgml/trouble.sgml
@@ -1,5 +1,5 @@
 
 
  
@@ -137,6 +137,18 @@ FATAL 1:  Database testdb does not exist in pg_database
     Postgres username, which may or may not be the right thing.
    
 
+   
+    
+NOTICE:  Unrecognized variable client_encoding
+    
+    This isn't an error; in fact, it's quite harmless.  You'll see this
+    message at startup if you use a client compiled with MULTIBYTE support
+    to connect to a server compiled without it.  (The client is trying
+    to tell the server what character set encoding it wants, but the
+    server has no idea what it's talking about.)  If the message bothers
+    you, use a client compiled with the same options as the server.
+   
+