Mention that the password must be followed by a newline with the -S option.

diff --git a/sudo.pod b/sudo.pod
index a153e0aab02e32b22f107b9d0f8892b1cddc0dba..7b3b8fa90c5dd54488199a03bb50f4188aed920a 100644 (file)
--- a/sudo.pod
+++ b/sudo.pod
@@ -337,7 +337,8 @@ have the role specified by I<role>.
 =item -S
 
 The B<-S> (I<stdin>) option causes B<sudo> to read the password from
-the standard input instead of the terminal device.
+the standard input instead of the terminal device.  The password must
+be followed by a newline character.
 
 =item -s [command]