diff --git a/ChangeLog b/ChangeLog
index a8bf73e7..50e0a80b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Aug  6 11:05:31 PDT 2004 William Brack <wbrack@mmm.com.hk>
+
+	* libexslt/date.c: added date:sum routine supplied by Joel
+	  Reed
+
 Wed Aug  4 00:04:13 CEST 2004 Daniel Veillard <daniel@veillard.com>
 
 	* doc/downloads.html doc/xslt.html: fixed a couple of problems
diff --git a/configure.in b/configure.in
index 965be7a2..64f002cd 100644
--- a/configure.in
+++ b/configure.in
@@ -253,7 +253,8 @@ dnl
 if [[ "${LOGNAME}" = "veillard" -a "`pwd`" = "/u/veillard/XSLT" ]] || \
    [[ "${LOGNAME}" = "bill" -a "`pwd`" = "/home/bill/gnomecvs/xsltest" ]]
    then
-    if test "${with_mem_debug}" = "" ; then
+    if test "${with_mem_debug}" = "" ;
+    then
 	with_mem_debug="yes"
     fi
     CFLAGS="-Wall -g -O -ansi -pedantic -W -Wunused -Wimplicit -Wreturn-type -Wswitch -Wcomment -Wtrigraphs -Wformat -Wchar-subscripts -Wuninitialized -Wparentheses -Wshadow -Wpointer-arith -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Wmissing-prototypes -Wnested-externs -Winline "
diff --git a/libexslt/date.c b/libexslt/date.c
index 1bea2d25..0a5b65b3 100644
--- a/libexslt/date.c
+++ b/libexslt/date.c
@@ -197,7 +197,8 @@ static const unsigned long dayInLeapYearByMonth[12] =
  * Returns 0 or the error code
  */
 static int
-_exsltDateParseGYear (exsltDateValDatePtr dt, const xmlChar **str) {
+_exsltDateParseGYear (exsltDateValDatePtr dt, const xmlChar **str)
+{
     const xmlChar *cur = *str, *firstChar;
     int isneg = 0, digcnt = 0;
 
@@ -366,7 +367,8 @@ _exsltDateParseGYear (exsltDateValDatePtr dt, const xmlChar **str) {
  * Returns 0 or the error code
  */
 static int
-_exsltDateParseGMonth (exsltDateValDatePtr dt, const xmlChar **str) {
+_exsltDateParseGMonth (exsltDateValDatePtr dt, const xmlChar **str)
+{
     const xmlChar *cur = *str;
     int ret = 0;
 
@@ -410,7 +412,8 @@ _exsltDateParseGMonth (exsltDateValDatePtr dt, const xmlChar **str) {
  * Returns 0 or the error code
  */
 static int
-_exsltDateParseGDay (exsltDateValDatePtr dt, const xmlChar **str) {
+_exsltDateParseGDay (exsltDateValDatePtr dt, const xmlChar **str)
+{
     const xmlChar *cur = *str;
     int ret = 0;
 
@@ -472,7 +475,8 @@ _exsltDateParseGDay (exsltDateValDatePtr dt, const xmlChar **str) {
  * Returns 0 or the error code
  */
 static int
-_exsltDateParseTime (exsltDateValDatePtr dt, const xmlChar **str) {
+_exsltDateParseTime (exsltDateValDatePtr dt, const xmlChar **str)
+{
     const xmlChar *cur = *str;
     unsigned int hour = 0; /* use temp var in case str is not xs:time */
     int ret = 0;
@@ -543,7 +547,8 @@ _exsltDateParseTime (exsltDateValDatePtr dt, const xmlChar **str) {
  * Returns 0 or the error code
  */
 static int
-_exsltDateParseTimeZone (exsltDateValDatePtr dt, const xmlChar **str) {
+_exsltDateParseTimeZone (exsltDateValDatePtr dt, const xmlChar **str)
+{
     const xmlChar *cur = *str;
     int ret = 0;
 
@@ -649,7 +654,8 @@ _exsltDateParseTimeZone (exsltDateValDatePtr dt, const xmlChar **str) {
  * Returns the #exsltDateValPtr
  */
 static exsltDateValPtr
-exsltDateCreateDate (exsltDateType type) {
+exsltDateCreateDate (exsltDateType type)
+{
     exsltDateValPtr ret;
 
     ret = (exsltDateValPtr) xmlMalloc(sizeof(exsltDateVal));
@@ -737,7 +743,8 @@ exsltDateFreeDate (exsltDateValPtr date) {
  * Returns the current date and time.
  */
 static exsltDateValPtr
-exsltDateCurrent (void) {
+exsltDateCurrent (void)
+{
     struct tm *localTm, *gmTm;
     time_t secs;
 #if HAVE_LOCALTIME_R
@@ -791,7 +798,8 @@ exsltDateCurrent (void) {
  * Returns a newly built #exsltDateValPtr of NULL in case of error
  */
 static exsltDateValPtr
-exsltDateParse (const xmlChar *dateTime) {
+exsltDateParse (const xmlChar *dateTime)
+{
     exsltDateValPtr dt;
     int ret;
     const xmlChar *cur = dateTime;
@@ -940,7 +948,8 @@ error:
  * Returns a newly built #exsltDateValPtr of NULL in case of error
  */
 static exsltDateValPtr
-exsltDateParseDuration (const xmlChar *duration) {
+exsltDateParseDuration (const xmlChar *duration)
+{
     const xmlChar  *cur = duration;
     exsltDateValPtr dur;
     int isneg = 0;
@@ -1065,7 +1074,8 @@ error:
  * Returns a newly allocated string, or NULL in case of error
  */
 static xmlChar *
-exsltDateFormatDuration (const exsltDateValDurationPtr dt) {
+exsltDateFormatDuration (const exsltDateValDurationPtr dt)
+{
     xmlChar buf[100], *cur = buf;
     double secs, days;
     double years, months;
@@ -1143,7 +1153,8 @@ exsltDateFormatDuration (const exsltDateValDurationPtr dt) {
  * Returns a newly allocated string, or NULL in case of error
  */
 static xmlChar *
-exsltDateFormatDateTime (const exsltDateValDatePtr dt) {
+exsltDateFormatDateTime (const exsltDateValDatePtr dt)
+{
     xmlChar buf[100], *cur = buf;
 
     if ((dt == NULL) ||	!VALID_DATETIME(dt))
@@ -1168,7 +1179,8 @@ exsltDateFormatDateTime (const exsltDateValDatePtr dt) {
  * Returns a newly allocated string, or NULL in case of error
  */
 static xmlChar *
-exsltDateFormatDate (const exsltDateValDatePtr dt) {
+exsltDateFormatDate (const exsltDateValDatePtr dt)
+{
     xmlChar buf[100], *cur = buf;
 
     if ((dt == NULL) || !VALID_DATETIME(dt))
@@ -1192,7 +1204,8 @@ exsltDateFormatDate (const exsltDateValDatePtr dt) {
  * Returns a newly allocated string, or NULL in case of error
  */
 static xmlChar *
-exsltDateFormatTime (const exsltDateValDatePtr dt) {
+exsltDateFormatTime (const exsltDateValDatePtr dt)
+{
     xmlChar buf[100], *cur = buf;
 
     if ((dt == NULL) || !VALID_TIME(dt))
@@ -1218,7 +1231,8 @@ exsltDateFormatTime (const exsltDateValDatePtr dt) {
  * Returns a newly allocated string, or NULL in case of error
  */
 static xmlChar *
-exsltDateFormat (const exsltDateValPtr dt) {
+exsltDateFormat (const exsltDateValPtr dt)
+{
 
     if (dt == NULL)
 	return NULL;
@@ -1703,7 +1717,8 @@ _exsltDateAddDuration (exsltDateValPtr x, exsltDateValPtr y)
  * Returns the current date and time as a date/time string.
  */
 static xmlChar *
-exsltDateDateTime (void) {
+exsltDateDateTime (void)
+{
     xmlChar *ret = NULL;
 #ifdef WITH_TIME
     exsltDateValPtr cur;
@@ -1735,7 +1750,8 @@ exsltDateDateTime (void) {
  * formats, returns NULL.
  */
 static xmlChar *
-exsltDateDate (const xmlChar *dateTime) {
+exsltDateDate (const xmlChar *dateTime)
+{
     exsltDateValPtr dt = NULL;
     xmlChar *ret = NULL;
 
@@ -1778,7 +1794,8 @@ exsltDateDate (const xmlChar *dateTime) {
  * formats, returns NULL.
  */
 static xmlChar *
-exsltDateTime (const xmlChar *dateTime) {
+exsltDateTime (const xmlChar *dateTime)
+{
     exsltDateValPtr dt = NULL;
     xmlChar *ret = NULL;
 
@@ -1825,7 +1842,8 @@ exsltDateTime (const xmlChar *dateTime) {
  * returned.
  */
 static double
-exsltDateYear (const xmlChar *dateTime) {
+exsltDateYear (const xmlChar *dateTime)
+{
     exsltDateValPtr dt;
     double ret;
 
@@ -1873,7 +1891,8 @@ exsltDateYear (const xmlChar *dateTime) {
  * returned.
  */
 static xmlXPathObjectPtr
-exsltDateLeapYear (const xmlChar *dateTime) {
+exsltDateLeapYear (const xmlChar *dateTime)
+{
     double year;
 
     year = exsltDateYear(dateTime);
@@ -1908,7 +1927,8 @@ exsltDateLeapYear (const xmlChar *dateTime) {
  * returned.
  */
 static double
-exsltDateMonthInYear (const xmlChar *dateTime) {
+exsltDateMonthInYear (const xmlChar *dateTime)
+{
     exsltDateValPtr dt;
     double ret;
 
@@ -1960,7 +1980,8 @@ exsltDateMonthInYear (const xmlChar *dateTime) {
  * 'October', 'November' or 'December'.
  */
 static const xmlChar *
-exsltDateMonthName (const xmlChar *dateTime) {
+exsltDateMonthName (const xmlChar *dateTime)
+{
     static const xmlChar monthNames[13][10] = {
         { 0 },
 	{ 'J', 'a', 'n', 'u', 'a', 'r', 'y', 0 },
@@ -2007,7 +2028,8 @@ exsltDateMonthName (const xmlChar *dateTime) {
  * 'Dec'.
  */
 static const xmlChar *
-exsltDateMonthAbbreviation (const xmlChar *dateTime) {
+exsltDateMonthAbbreviation (const xmlChar *dateTime)
+{
     static const xmlChar monthAbbreviations[13][4] = {
         { 0 },
 	{ 'J', 'a', 'n', 0 },
@@ -2052,7 +2074,8 @@ exsltDateMonthAbbreviation (const xmlChar *dateTime) {
  * returned.
  */
 static double
-exsltDateWeekInYear (const xmlChar *dateTime) {
+exsltDateWeekInYear (const xmlChar *dateTime)
+{
     exsltDateValPtr dt;
     long fdiy, fdiw, ret;
 
@@ -2114,7 +2137,8 @@ exsltDateWeekInYear (const xmlChar *dateTime) {
  * returned.
  */
 static double
-exsltDateWeekInMonth (const xmlChar *dateTime) {
+exsltDateWeekInMonth (const xmlChar *dateTime)
+{
     exsltDateValPtr dt;
     long fdiy, fdiw, ret;
 
@@ -2167,7 +2191,8 @@ exsltDateWeekInMonth (const xmlChar *dateTime) {
  * returned.
  */
 static double
-exsltDateDayInYear (const xmlChar *dateTime) {
+exsltDateDayInYear (const xmlChar *dateTime)
+{
     exsltDateValPtr dt;
     long ret;
 
@@ -2216,7 +2241,8 @@ exsltDateDayInYear (const xmlChar *dateTime) {
  * returned.
  */
 static double
-exsltDateDayInMonth (const xmlChar *dateTime) {
+exsltDateDayInMonth (const xmlChar *dateTime)
+{
     exsltDateValPtr dt;
     double ret;
 
@@ -2263,7 +2289,8 @@ exsltDateDayInMonth (const xmlChar *dateTime) {
  * returned.
  */
 static double
-exsltDateDayOfWeekInMonth (const xmlChar *dateTime) {
+exsltDateDayOfWeekInMonth (const xmlChar *dateTime)
+{
     exsltDateValPtr dt;
     long ret;
 
@@ -2311,7 +2338,8 @@ exsltDateDayOfWeekInMonth (const xmlChar *dateTime) {
  * Monday and so on up to 7 for Saturday.
  */
 static double
-exsltDateDayInWeek (const xmlChar *dateTime) {
+exsltDateDayInWeek (const xmlChar *dateTime)
+{
     exsltDateValPtr dt;
     long diy, ret;
 
@@ -2362,7 +2390,8 @@ exsltDateDayInWeek (const xmlChar *dateTime) {
  * 'Tuesday', 'Wednesday', 'Thursday' or 'Friday'.
  */
 static const xmlChar *
-exsltDateDayName (const xmlChar *dateTime) {
+exsltDateDayName (const xmlChar *dateTime)
+{
     static const xmlChar dayNames[8][10] = {
         { 0 },
 	{ 'S', 'u', 'n', 'd', 'a', 'y', 0 },
@@ -2401,7 +2430,8 @@ exsltDateDayName (const xmlChar *dateTime) {
  * 'Sun', 'Mon', 'Tue', 'Wed', 'Thu' or 'Fri'.
  */
 static const xmlChar *
-exsltDateDayAbbreviation (const xmlChar *dateTime) {
+exsltDateDayAbbreviation (const xmlChar *dateTime)
+{
     static const xmlChar dayAbbreviations[8][4] = {
         { 0 },
 	{ 'S', 'u', 'n', 0 },
@@ -2438,7 +2468,8 @@ exsltDateDayAbbreviation (const xmlChar *dateTime) {
  * returned.
  */
 static double
-exsltDateHourInDay (const xmlChar *dateTime) {
+exsltDateHourInDay (const xmlChar *dateTime)
+{
     exsltDateValPtr dt;
     double ret;
 
@@ -2483,7 +2514,8 @@ exsltDateHourInDay (const xmlChar *dateTime) {
  * returned.
  */
 static double
-exsltDateMinuteInHour (const xmlChar *dateTime) {
+exsltDateMinuteInHour (const xmlChar *dateTime)
+{
     exsltDateValPtr dt;
     double ret;
 
@@ -2530,7 +2562,8 @@ exsltDateMinuteInHour (const xmlChar *dateTime) {
  * Returns the second or NaN.
  */
 static double
-exsltDateSecondInMinute (const xmlChar *dateTime) {
+exsltDateSecondInMinute (const xmlChar *dateTime)
+{
     exsltDateValPtr dt;
     double ret;
 
@@ -2671,6 +2704,100 @@ exsltDateAddDuration (const xmlChar *xstr, const xmlChar *ystr)
     return ret;
 }
 
+/**
+ * exsltDateSumFunction:
+ * @ns:      a node set of duration strings
+ *
+ * The date:sum function adds a set of durations together. 
+ * The string values of the nodes in the node set passed as an argument 
+ * are interpreted as durations and added together as if using the 
+ * date:add-duration function. (from exslt.org)
+ *
+ * The return value is a string in the format defined for xs:duration
+ * in [3.2.6 duration] of [XML Schema Part 2: Datatypes]. 
+ * The durations can usually be added by summing the numbers given for
+ * each of the components in the durations. However, if the durations
+ * are differently signed, then this sometimes results in durations
+ * that are impossible to express in this syntax (e.g. 'P1M' + '-P1D').
+ * In these cases, the function returns an empty string (''). 
+ *
+ * Returns duration string or NULL.
+ */
+static void
+exsltDateSumFunction (xmlXPathParserContextPtr ctxt, int nargs)
+{
+    xmlNodeSetPtr ns;
+    void *user = NULL;
+    xmlChar *tmp;
+    exsltDateValPtr x, total;
+    xmlChar *ret;
+    long carry;
+    int i;
+
+    if (nargs != 1) {
+	xmlXPathSetArityError (ctxt);
+	return;
+    }
+
+    /* We need to delay the freeing of value->user */
+    if ((ctxt->value != NULL) && ctxt->value->boolval != 0) {
+	user = ctxt->value->user;
+	ctxt->value->boolval = 0;
+	ctxt->value->user = NULL;
+    }
+
+    ns = xmlXPathPopNodeSet (ctxt);
+    if (xmlXPathCheckError (ctxt))
+	return;
+
+    if ((ns == NULL) || (ns->nodeNr == 0))
+	return;
+
+    total = exsltDateCreateDate (XS_DURATION);
+
+    for (i = 0; i < ns->nodeNr; i++) {
+
+	tmp = xmlXPathCastNodeToString (ns->nodeTab[i]);
+	if (tmp == NULL)
+	    return;
+
+	x = exsltDateParseDuration (tmp);
+	if (x == NULL) {
+	    xmlFree (tmp);
+	    return;
+	}
+
+	/* months */
+	total->value.dur.mon += x->value.dur.mon;
+
+	/* seconds */
+	total->value.dur.sec += x->value.dur.sec;
+	carry = (long) FQUOTIENT (total->value.dur.sec, SECS_PER_DAY);
+	if (total->value.dur.sec != 0.0) {
+	    total->value.dur.sec =
+		MODULO (total->value.dur.sec, SECS_PER_DAY);
+	}
+
+	/* days */
+	total->value.dur.day += x->value.dur.day + carry;
+
+	exsltDateFreeDate (x);
+	xmlFree (tmp);
+    }
+
+    ret = exsltDateFormatDuration (&(total->value.dur));
+    exsltDateFreeDate (total);
+
+    xmlXPathFreeNodeSet (ns);
+    if (user != NULL)
+	xmlFreeNodeList ((xmlNodePtr) user);
+
+    if (ret == NULL)
+	xmlXPathReturnEmptyString (ctxt);
+    else
+	xmlXPathReturnString (ctxt, ret);
+}
+
 /**
  * exsltDateSeconds:
  * @dateTime: a date/time string
@@ -2914,7 +3041,8 @@ exsltDateDateTimeFunction (xmlXPathParserContextPtr ctxt, int nargs)
  * Wraps exsltDateDate() for use by the XPath engine.
  */
 static void
-exsltDateDateFunction (xmlXPathParserContextPtr ctxt, int nargs) {
+exsltDateDateFunction (xmlXPathParserContextPtr ctxt, int nargs)
+{
     xmlChar *ret, *dt = NULL;
 
     if ((nargs < 0) || (nargs > 1)) {
@@ -2952,7 +3080,8 @@ exsltDateDateFunction (xmlXPathParserContextPtr ctxt, int nargs) {
  * Wraps exsltDateTime() for use by the XPath engine.
  */
 static void
-exsltDateTimeFunction (xmlXPathParserContextPtr ctxt, int nargs) {
+exsltDateTimeFunction (xmlXPathParserContextPtr ctxt, int nargs)
+{
     xmlChar *ret, *dt = NULL;
 
     if ((nargs < 0) || (nargs > 1)) {
@@ -2990,7 +3119,8 @@ exsltDateTimeFunction (xmlXPathParserContextPtr ctxt, int nargs) {
  * Wraps exsltDateYear() for use by the XPath engine.
  */
 static void
-exsltDateYearFunction (xmlXPathParserContextPtr ctxt, int nargs) {
+exsltDateYearFunction (xmlXPathParserContextPtr ctxt, int nargs)
+{
     xmlChar *dt = NULL;
     double ret;
 
@@ -3023,7 +3153,8 @@ exsltDateYearFunction (xmlXPathParserContextPtr ctxt, int nargs) {
  * Wraps exsltDateLeapYear() for use by the XPath engine.
  */
 static void
-exsltDateLeapYearFunction (xmlXPathParserContextPtr ctxt, int nargs) {
+exsltDateLeapYearFunction (xmlXPathParserContextPtr ctxt, int nargs)
+{
     xmlChar *dt = NULL;
     xmlXPathObjectPtr ret;
 
@@ -3093,7 +3224,8 @@ X_IN_Y(Month,Year)
  * Wraps exsltDateMonthName() for use by the XPath engine.
  */
 static void
-exsltDateMonthNameFunction (xmlXPathParserContextPtr ctxt, int nargs) {
+exsltDateMonthNameFunction (xmlXPathParserContextPtr ctxt, int nargs)
+{
     xmlChar *dt = NULL;
     const xmlChar *ret;
 
@@ -3220,7 +3352,8 @@ X_IN_Y(Day,Week)
  * Wraps exsltDateDayName() for use by the XPath engine.
  */
 static void
-exsltDateDayNameFunction (xmlXPathParserContextPtr ctxt, int nargs) {
+exsltDateDayNameFunction (xmlXPathParserContextPtr ctxt, int nargs)
+{
     xmlChar *dt = NULL;
     const xmlChar *ret;
 
@@ -3256,7 +3389,8 @@ exsltDateDayNameFunction (xmlXPathParserContextPtr ctxt, int nargs) {
  * Wraps exsltDateDayAbbreviation() for use by the XPath engine.
  */
 static void
-exsltDateDayAbbreviationFunction (xmlXPathParserContextPtr ctxt, int nargs) {
+exsltDateDayAbbreviationFunction (xmlXPathParserContextPtr ctxt, int nargs)
+{
     xmlChar *dt = NULL;
     const xmlChar *ret;
 
@@ -3320,7 +3454,8 @@ X_IN_Y(Second,Minute)
  * Wraps exsltDateSeconds() for use by the XPath engine.
  */
 static void
-exsltDateSecondsFunction (xmlXPathParserContextPtr ctxt, int nargs) {
+exsltDateSecondsFunction (xmlXPathParserContextPtr ctxt, int nargs)
+{
     xmlChar *str = NULL;
     double   ret;
 
@@ -3352,7 +3487,8 @@ exsltDateSecondsFunction (xmlXPathParserContextPtr ctxt, int nargs) {
  * Wraps exsltDateAdd() for use by the XPath processor.
  */
 static void
-exsltDateAddFunction (xmlXPathParserContextPtr ctxt, int nargs) {
+exsltDateAddFunction (xmlXPathParserContextPtr ctxt, int nargs)
+{
     xmlChar *ret, *xstr, *ystr;
 
     if (nargs != 2) {
@@ -3388,7 +3524,8 @@ exsltDateAddFunction (xmlXPathParserContextPtr ctxt, int nargs) {
  * Wraps exsltDateAddDuration() for use by the XPath processor.
  */
 static void
-exsltDateAddDurationFunction (xmlXPathParserContextPtr ctxt, int nargs) {
+exsltDateAddDurationFunction (xmlXPathParserContextPtr ctxt, int nargs)
+{
     xmlChar *ret, *xstr, *ystr;
 
     if (nargs != 2) {
@@ -3424,7 +3561,8 @@ exsltDateAddDurationFunction (xmlXPathParserContextPtr ctxt, int nargs) {
  * Wraps exsltDateDifference() for use by the XPath processor.
  */
 static void
-exsltDateDifferenceFunction (xmlXPathParserContextPtr ctxt, int nargs) {
+exsltDateDifferenceFunction (xmlXPathParserContextPtr ctxt, int nargs)
+{
     xmlChar *ret, *xstr, *ystr;
 
     if (nargs != 2) {
@@ -3460,7 +3598,8 @@ exsltDateDifferenceFunction (xmlXPathParserContextPtr ctxt, int nargs) {
  * Wraps exsltDateDuration() for use by the XPath engine
  */
 static void
-exsltDateDurationFunction (xmlXPathParserContextPtr ctxt, int nargs) {
+exsltDateDurationFunction (xmlXPathParserContextPtr ctxt, int nargs)
+{
     xmlChar *ret;
     xmlChar *number = NULL;
 
@@ -3494,80 +3633,83 @@ exsltDateDurationFunction (xmlXPathParserContextPtr ctxt, int nargs) {
  * Registers the EXSLT - Dates and Times module
  */
 void
-exsltDateRegister(void)
+exsltDateRegister (void)
 {
+    xsltRegisterExtModuleFunction ((const xmlChar *) "add",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateAddFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "add-duration",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateAddDurationFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "date",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateDateFunction);
 #ifdef WITH_TIME
-    xsltRegisterExtModuleFunction((const xmlChar *) "date-time",
-			  (const xmlChar *) EXSLT_DATE_NAMESPACE,
-			  exsltDateDateTimeFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "date-time",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateDateTimeFunction);
 #endif
-    xsltRegisterExtModuleFunction((const xmlChar *) "date",
-			  (const xmlChar *) EXSLT_DATE_NAMESPACE,
-			  exsltDateDateFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "time",
-			  (const xmlChar *) EXSLT_DATE_NAMESPACE,
-			  exsltDateTimeFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "year",
-			  (const xmlChar *) EXSLT_DATE_NAMESPACE,
-			  exsltDateYearFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "leap-year",
-			  (const xmlChar *) EXSLT_DATE_NAMESPACE,
-			  exsltDateLeapYearFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "month-in-year",
-			  (const xmlChar *) EXSLT_DATE_NAMESPACE,
-			  exsltDateMonthInYearFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "month-name",
-			  (const xmlChar *) EXSLT_DATE_NAMESPACE,
-			  exsltDateMonthNameFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "month-abbreviation",
-			  (const xmlChar *) EXSLT_DATE_NAMESPACE,
-			  exsltDateMonthAbbreviationFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "week-in-year",
-			  (const xmlChar *) EXSLT_DATE_NAMESPACE,
-			  exsltDateWeekInYearFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "week-in-month",
-			  (const xmlChar *) EXSLT_DATE_NAMESPACE,
-			  exsltDateWeekInMonthFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "day-in-year",
-			  (const xmlChar *) EXSLT_DATE_NAMESPACE,
-			  exsltDateDayInYearFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "day-in-month",
-                            (const xmlChar *) EXSLT_DATE_NAMESPACE,
-                            exsltDateDayInMonthFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "day-of-week-in-month",
-                            (const xmlChar *) EXSLT_DATE_NAMESPACE,
-                            exsltDateDayOfWeekInMonthFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "day-in-week",
-                            (const xmlChar *) EXSLT_DATE_NAMESPACE,
-                            exsltDateDayInWeekFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "day-name",
-                            (const xmlChar *) EXSLT_DATE_NAMESPACE,
-                            exsltDateDayNameFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "day-abbreviation",
-                            (const xmlChar *) EXSLT_DATE_NAMESPACE,
-                            exsltDateDayAbbreviationFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "hour-in-day",
-                            (const xmlChar *) EXSLT_DATE_NAMESPACE,
-                            exsltDateHourInDayFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "minute-in-hour",
-                            (const xmlChar *) EXSLT_DATE_NAMESPACE,
-                            exsltDateMinuteInHourFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "second-in-minute",
-                            (const xmlChar *) EXSLT_DATE_NAMESPACE,
-                            exsltDateSecondInMinuteFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "seconds",
-                            (const xmlChar *) EXSLT_DATE_NAMESPACE,
-                            exsltDateSecondsFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "add",
-                            (const xmlChar *) EXSLT_DATE_NAMESPACE,
-                            exsltDateAddFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "add-duration",
-                            (const xmlChar *) EXSLT_DATE_NAMESPACE,
-                            exsltDateAddDurationFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "difference",
-                            (const xmlChar *) EXSLT_DATE_NAMESPACE,
-                            exsltDateDifferenceFunction);
-    xsltRegisterExtModuleFunction((const xmlChar *) "duration",
-                            (const xmlChar *) EXSLT_DATE_NAMESPACE,
-                            exsltDateDurationFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "day-abbreviation",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateDayAbbreviationFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "day-in-month",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateDayInMonthFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "day-in-week",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateDayInWeekFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "day-in-year",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateDayInYearFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "day-name",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateDayNameFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "day-of-week-in-month",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateDayOfWeekInMonthFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "difference",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateDifferenceFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "duration",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateDurationFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "hour-in-day",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateHourInDayFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "leap-year",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateLeapYearFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "minute-in-hour",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateMinuteInHourFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "month-abbreviation",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateMonthAbbreviationFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "month-in-year",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateMonthInYearFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "month-name",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateMonthNameFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "second-in-minute",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateSecondInMinuteFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "seconds",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateSecondsFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "sum",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateSumFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "time",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateTimeFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "week-in-month",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateWeekInMonthFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "week-in-year",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateWeekInYearFunction);
+    xsltRegisterExtModuleFunction ((const xmlChar *) "year",
+				   (const xmlChar *) EXSLT_DATE_NAMESPACE,
+				   exsltDateYearFunction);
 }