Document that tab completation can interfere with some SQL commands.

diff --git a/doc/src/sgml/ref/psql-ref.sgml b/doc/src/sgml/ref/psql-ref.sgml
index ebb0ad4ecf35b15f164c869be86d780053179bca..a47af51b9dd924ee4fbfb6da80fa16f2ad3237c7 100644 (file)
--- a/doc/src/sgml/ref/psql-ref.sgml
+++ b/doc/src/sgml/ref/psql-ref.sgml
@@ -3272,7 +3272,10 @@ testdb=> \set PROMPT1 '%[%033[1;33;40m%]%n@%/%R%[%033[0m%]%# '
     exits and is reloaded when
     psql starts up. Tab-completion is also
     supported, although the completion logic makes no claim to be an
-    SQL parser.  If for some reason you do not like the tab completion, you
+    SQL parser.  The queries generated by tab-completion
+    can also interfere with other SQL commands, e.g. SET
+    TRANSACTION ISOLATION LEVEL.
+    If for some reason you do not like the tab completion, you
     can turn it off by putting this in a file named
     .inputrc in your home directory: