diff -up ncurses-5.9/man/clear.1.clear ncurses-5.9/man/clear.1
--- ncurses-5.9/man/clear.1.clear 2010-12-04 19:36:44.000000000 +0100
+++ ncurses-5.9/man/clear.1 2013-01-30 12:33:06.140568071 +0100
@@ -37,7 +37,10 @@
.SH DESCRIPTION
\fB@CLEAR@\fR clears your screen if this is possible. It looks in the
environment for the terminal type and then in the \fBterminfo\fR database to
-figure out how to clear the screen.
+figure out how to clear the screen. Some terminals can clear also their
+scrollback buffer to prevent access to potentially sensitive data. If the
+\fBterminfo\fR entry for the terminal type contains extended capability
+\fBE3\fR, \fB@CLEAR@\fR will use it to clear the scrollback buffer.
.PP
\fB@CLEAR@\fR ignores any command-line parameters that may be present.
.SH SEE ALSO
diff -up ncurses-5.9/progs/clear.c.clear ncurses-5.9/progs/clear.c
--- ncurses-5.9/progs/clear.c.clear 2007-10-14 00:16:02.000000000 +0200
+++ ncurses-5.9/progs/clear.c 2013-01-30 12:13:10.494509019 +0100
@@ -52,7 +52,15 @@ main(
int argc GCC_UNUSED,
char *argv[]GCC_UNUSED)
{
+ char *E3;
+
setupterm((char *) 0, STDOUT_FILENO, (int *) 0);
+
+ /* Clear the scrollback buffer if possible. */
+ E3 = tigetstr("E3");
+ if (E3 && E3 != CANCELLED_STRING)
+ tputs(E3, lines > 0 ? lines : 1, putch);
+
ExitProgram((tputs(clear_screen, lines > 0 ? lines : 1, putch) == ERR)
? EXIT_FAILURE
: EXIT_SUCCESS);