diff --git a/ncurses/base/lib_redrawln.c b/ncurses/base/lib_redrawln.c
new file mode 100644
index 0000000..6b0905f
--- /dev/null
+++ b/ncurses/base/lib_redrawln.c
@@ -0,0 +1,84 @@
+/****************************************************************************
+ * Copyright (c) 1998-2006,2007 Free Software Foundation, Inc.              *
+ *                                                                          *
+ * Permission is hereby granted, free of charge, to any person obtaining a  *
+ * copy of this software and associated documentation files (the            *
+ * "Software"), to deal in the Software without restriction, including      *
+ * without limitation the rights to use, copy, modify, merge, publish,      *
+ * distribute, distribute with modifications, sublicense, and/or sell       *
+ * copies of the Software, and to permit persons to whom the Software is    *
+ * furnished to do so, subject to the following conditions:                 *
+ *                                                                          *
+ * The above copyright notice and this permission notice shall be included  *
+ * in all copies or substantial portions of the Software.                   *
+ *                                                                          *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
+ *                                                                          *
+ * Except as contained in this notice, the name(s) of the above copyright   *
+ * holders shall not be used in advertising or otherwise to promote the     *
+ * sale, use or other dealings in this Software without prior written       *
+ * authorization.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  Author: Thomas E. Dickey <dickey@clark.net> 1997                        *
+ ****************************************************************************/
+
+/*
+ *	lib_redrawln.c
+ *
+ *	The routine wredrawln().
+ *
+ */
+
+#include <curses.priv.h>
+
+MODULE_ID("$Id: lib_redrawln.c,v 1.12 2007/10/13 20:08:56 tom Exp $")
+
+NCURSES_EXPORT(int)
+wredrawln(WINDOW *win, int beg, int num)
+{
+    int i;
+    int end;
+    size_t len;
+
+    T((T_CALLED("wredrawln(%p,%d,%d)"), win, beg, num));
+
+    if (win == 0)
+	returnCode(ERR);
+
+    if (beg < 0)
+	beg = 0;
+
+    if (touchline(win, beg, num) == ERR)
+	returnCode(ERR);
+
+    if (touchline(curscr, beg + win->_begy, num) == ERR)
+	returnCode(ERR);
+
+    end = beg + num;
+    if (end > curscr->_maxy + 1)
+	end = curscr->_maxy + 1;
+    if (end > win->_maxy + 1)
+	end = win->_maxy + 1;
+
+    len = (win->_maxx + 1);
+    if (len > (size_t) (curscr->_maxx + 1))
+	len = (size_t) (curscr->_maxx + 1);
+    len *= sizeof(curscr->_line[0].text[0]);
+
+    for (i = beg; i < end; i++) {
+	int crow = i + win->_begy;
+
+	memset(curscr->_line[crow].text + win->_begx, 0, len);
+	_nc_make_oldhash(crow);
+    }
+
+    returnCode(OK);
+}