Document -s option -- suppress printing of top-level expressions

Misc/python.man

@@ -13,6 +13,9 @@ python \- an interpreted, interactive, object-oriented programming language
 .B \-i
 ]
 [
+.B \-s
+]
+[
 .B \-u
 ]
 [
@@ -58,6 +61,11 @@ command.  It does not read the $PYTHONSTARTUP file.  This can be
 useful to inspect global variables or a stack trace when a script
 raises an exception.
 .TP
+.B \-s
+Suppresses the automatic printing of expressions entered in
+interactive mode (useful when input is actually generated e.g. by
+Emacs).
+.TP
 .B \-u
 Force stdout and stderr to be totally unbuffered.
 .TP
@@ -173,6 +181,9 @@ the \fB\-d\fP option.
 .IP PYTHONINSPECT
 If this is set to a non-empty string it is equivalent to specifying
 the \fB\-i\fP option.
+.IP PYTHONSUPPRESS
+If this is set to a non-empty string it is equivalent to specifying
+the \fB\-s\fP option.
 .IP PYTHONUNBUFFERED
 If this is set to a non-empty string it is equivalent to specifying
 the \fB\-u\fP option.