docs: properly document psql auto encoding mode

In psql, both stdin and stdout must be terminals to get a client
encoding of 'auto'.

Patch by Albe Laurenz

Backpatch to 9.3.

diff --git a/doc/src/sgml/ref/psql-ref.sgml b/doc/src/sgml/ref/psql-ref.sgml
index f9680fca27882902b8e417f1f29e9744dd3d7e2d..881ba42b54279fdb7d26558bcb45f69aba99e4de 100644 (file)
--- a/doc/src/sgml/ref/psql-ref.sgml
+++ b/doc/src/sgml/ref/psql-ref.sgml
@@ -636,7 +636,7 @@ $ psql postgresql://dbmaster:5433/mydb?sslmode=require
     
 
     
-     If at least one of standard input or standard output are a
+     If both standard input and standard output are a
      terminal, then psql sets the client
      encoding to auto, which will detect the
      appropriate client encoding from the locale settings