update

diff --git a/sponge.docbook b/sponge.docbook
index 04447e33fa4b16d2fcf44598bb744c1580466663..ebdcdea4210d3bea97cf75b9f075f2395a53d548 100644 (file)
--- a/sponge.docbook
+++ b/sponge.docbook
@@ -61,7 +61,9 @@ USA
                        the same file.</para>
                <para>
                        It also creates the output file
-                       atomically by renaming a temp file into place.
+                       atomically by renaming a temp file into place,
+                       and preserves the permissions of the output file
+                       if it already exists.
                        If the output file is a special file or symlink,
                        the data will be written to it.</para>
                <para>If no output file is specified, sponge outputs to