diff --git a/ncurses/base/vsscanf.c b/ncurses/base/vsscanf.c
new file mode 100644
index 0000000..e6253c3
--- /dev/null
+++ b/ncurses/base/vsscanf.c
@@ -0,0 +1,356 @@
+/****************************************************************************
+ * Copyright (c) 1998-2003,2004 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.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ *  State-machine fallback written by Thomas E. Dickey 2002                 *
+ ****************************************************************************/
+
+/*
+ * This function is needed to support vwscanw
+ */
+
+#include <curses.priv.h>
+
+#if !HAVE_VSSCANF
+
+MODULE_ID("$Id: vsscanf.c,v 1.18 2004/04/03 20:27:02 tom Exp $")
+
+#if !(HAVE_VFSCANF || HAVE__DOSCAN)
+
+#include <ctype.h>
+
+#define L_SQUARE '['
+#define R_SQUARE ']'
+
+typedef enum {
+    cUnknown
+    ,cError			/* anything that isn't ANSI */
+    ,cAssigned
+    ,cChar
+    ,cInt
+    ,cFloat
+    ,cDouble
+    ,cPointer
+    ,cLong
+    ,cShort
+    ,cRange
+    ,cString
+} ChunkType;
+
+typedef enum {
+    oUnknown
+    ,oShort
+    ,oLong
+} OtherType;
+
+typedef enum {
+    sUnknown
+    ,sPercent			/* last was '%' beginning a format */
+    ,sNormal			/* ...somewhere in the middle */
+    ,sLeft			/* last was left square bracket beginning a range */
+    ,sRange			/* ...somewhere in the middle */
+    ,sFinal			/* last finished a format */
+} ScanState;
+
+static ChunkType
+final_ch(int ch, OtherType other)
+{
+    ChunkType result = cUnknown;
+
+    switch (ch) {
+    case 'c':
+	if (other == oUnknown)
+	    result = cChar;
+	else
+	    result = cError;
+	break;
+    case 'd':
+    case 'i':
+    case 'X':
+    case 'x':
+	switch (other) {
+	case oUnknown:
+	    result = cInt;
+	    break;
+	case oShort:
+	    result = cShort;
+	    break;
+	case oLong:
+	    result = cLong;
+	    break;
+	}
+	break;
+    case 'E':
+    case 'e':
+    case 'f':
+    case 'g':
+	switch (other) {
+	case oUnknown:
+	    result = cFloat;
+	    break;
+	case oShort:
+	    result = cError;
+	    break;
+	case oLong:
+	    result = cDouble;
+	    break;
+	}
+	break;
+    case 'n':
+	if (other == oUnknown)
+	    result = cAssigned;
+	else
+	    result = cError;
+	break;
+    case 'p':
+	if (other == oUnknown)
+	    result = cPointer;
+	else
+	    result = cError;
+	break;
+    case 's':
+	if (other == oUnknown)
+	    result = cString;
+	else
+	    result = cError;
+	break;
+    }
+    return result;
+}
+
+static OtherType
+other_ch(int ch)
+{
+    OtherType result = oUnknown;
+    switch (ch) {
+    case 'h':
+	result = oShort;
+	break;
+    case 'l':
+	result = oLong;
+	break;
+    }
+    return result;
+}
+#endif
+
+/*VARARGS2*/
+NCURSES_EXPORT(int)
+vsscanf(const char *str, const char *format, va_list ap)
+{
+#if HAVE_VFSCANF || HAVE__DOSCAN
+    /*
+     * This code should work on anything descended from AT&T SVr1.
+     */
+    FILE strbuf;
+
+    strbuf._flag = _IOREAD;
+    strbuf._ptr = strbuf._base = (unsigned char *) str;
+    strbuf._cnt = strlen(str);
+    strbuf._file = _NFILE;
+
+#if HAVE_VFSCANF
+    return (vfscanf(&strbuf, format, ap));
+#else
+    return (_doscan(&strbuf, format, ap));
+#endif
+#else
+    static int can_convert = -1;
+
+    int assigned = 0;
+    int consumed = 0;
+
+    T((T_CALLED("vsscanf(%s,%s,...)"),
+       _nc_visbuf2(1, str),
+       _nc_visbuf2(2, format)));
+
+    /*
+     * This relies on having a working "%n" format conversion.  Check if it
+     * works.  Only very old C libraries do not support it.
+     *
+     * FIXME: move this check into the configure script.
+     */
+    if (can_convert < 0) {
+	int check1;
+	int check2;
+	if (sscanf("123", "%d%n", &check1, &check2) > 0
+	    && check1 == 123
+	    && check2 == 3) {
+	    can_convert = 1;
+	} else {
+	    can_convert = 0;
+	}
+    }
+
+    if (can_convert) {
+	size_t len_fmt = strlen(format) + 32;
+	char *my_fmt = malloc(len_fmt);
+	ChunkType chunk, ctest;
+	OtherType other, otest;
+	ScanState state;
+	unsigned n;
+	int eaten;
+	void *pointer;
+
+	if (my_fmt != 0) {
+	    /*
+	     * Split the original format into chunks, adding a "%n" to the end
+	     * of each (except of course if it used %n), and use that
+	     * information to decide where to start scanning the next chunk.
+	     *
+	     * FIXME:  does %n count bytes or characters?  If the latter, this
+	     * will require further work for multibyte strings.
+	     */
+	    while (*format != '\0') {
+		/* find a chunk */
+		state = sUnknown;
+		chunk = cUnknown;
+		other = oUnknown;
+		pointer = 0;
+		for (n = 0; format[n] != 0 && state != sFinal; ++n) {
+		    my_fmt[n] = format[n];
+		    switch (state) {
+		    case sUnknown:
+			if (format[n] == '%')
+			    state = sPercent;
+			break;
+		    case sPercent:
+			if (format[n] == '%') {
+			    state = sUnknown;
+			} else if (format[n] == L_SQUARE) {
+			    state = sLeft;
+			} else {
+			    state = sNormal;
+			    --n;
+			}
+			break;
+		    case sLeft:
+			state = sRange;
+			if (format[n] == '^') {
+			    ++n;
+			    my_fmt[n] = format[n];
+			}
+			break;
+		    case sRange:
+			if (format[n] == R_SQUARE) {
+			    state = sFinal;
+			    chunk = cRange;
+			}
+			break;
+		    case sNormal:
+			if (format[n] == '*') {
+			    state = sUnknown;
+			} else {
+			    if ((ctest = final_ch(format[n], other)) != cUnknown) {
+				state = sFinal;
+				chunk = ctest;
+			    } else if ((otest = other_ch(format[n])) != oUnknown) {
+				other = otest;
+			    } else if (isalpha(UChar(format[n]))) {
+				state = sFinal;
+				chunk = cError;
+			    }
+			}
+			break;
+		    case sFinal:
+			break;
+		    }
+		}
+		my_fmt[n] = '\0';
+		format += n;
+
+		if (chunk == cUnknown
+		    || chunk == cError) {
+		    if (assigned == 0)
+			assigned = EOF;
+		    break;
+		}
+
+		/* add %n, if the format was not that */
+		if (chunk != cAssigned) {
+		    strcat(my_fmt, "%n");
+		}
+
+		switch (chunk) {
+		case cAssigned:
+		    strcat(my_fmt, "%n");
+		    pointer = &eaten;
+		    break;
+		case cInt:
+		    pointer = va_arg(ap, int *);
+		    break;
+		case cShort:
+		    pointer = va_arg(ap, short *);
+		    break;
+		case cFloat:
+		    pointer = va_arg(ap, float *);
+		    break;
+		case cDouble:
+		    pointer = va_arg(ap, double *);
+		    break;
+		case cLong:
+		    pointer = va_arg(ap, long *);
+		    break;
+		case cPointer:
+		    pointer = va_arg(ap, void *);
+		    break;
+		case cChar:
+		case cRange:
+		case cString:
+		    pointer = va_arg(ap, char *);
+		    break;
+		case cError:
+		case cUnknown:
+		    break;
+		}
+		/* do the conversion */
+		T(("...converting chunk #%d type %d(%s,%s)",
+		   assigned + 1, chunk,
+		   _nc_visbuf2(1, str + consumed),
+		   _nc_visbuf2(2, my_fmt)));
+		if (sscanf(str + consumed, my_fmt, pointer, &eaten) > 0)
+		    consumed += eaten;
+		else
+		    break;
+		++assigned;
+	    }
+	    free(my_fmt);
+	}
+    }
+    returnCode(assigned);
+#endif
+}
+#else
+extern
+NCURSES_EXPORT(void)
+_nc_vsscanf(void);		/* quiet's gcc warning */
+NCURSES_EXPORT(void)
+_nc_vsscanf(void)
+{
+}				/* nonempty for strict ANSI compilers */
+#endif /* !HAVE_VSSCANF */