Clarify tar documentation about return error codes.

Backpatch to 8.2.X.

diff --git a/doc/src/sgml/backup.sgml b/doc/src/sgml/backup.sgml
index b8b3bb01d91213e4b695955f0f99513690c883ab..3040f3187dc50a4518640d07cc4ece9abb9b114d 100644 (file)
--- a/doc/src/sgml/backup.sgml
+++ b/doc/src/sgml/backup.sgml
@@ -1,4 +1,4 @@
-
+
 
 
  Backup and Restore
@@ -735,11 +735,11 @@ SELECT pg_stop_backup();
     of rsync return a separate exit code for
     vanished source files, and you can write a driver script to
     accept this exit code as a non-error case.  Also, some versions of
-    GNU tar consider it an error if a file was truncated
-    while tar is copying it.  Fortunately, GNU
-    tar versions 1.16 and later exits with 1
-    if a file was changed during the backup, and 2 for other
-    errors.
+    GNU tar return an error code indistinguishable from
+    a fatal error if a file was truncated while tar was
+    copying it.  Fortunately, GNU tar versions 1.16 and
+    later exits with 1 if a file was changed during the backup,
+    and 2 for other errors.