Spring cleanup ...: - configure.in Makefile.am config.h.in

Spring cleanup ...:
- configure.in Makefile.am config.h.in xmlversion.h.in: detect if
  we need string functions
- trio.[ch] strio.[ch]: embedded the Trio-0.23 string functions
  to be able to use them where needed. Applied some changes
  to reduce name linking pollution and compile in only what's
  needed.
- HTMLtree.c debugXML.c entities.c error.c nanoftp.c valid.c
  xlink.c xmlversion.h.in xpath.c: got rid of the #ifdef
  for the string manipulation functions
- xmlmemory.[ch]: removed DEBUG_MEMORY_FREED and added it automatically
  to the free() function of xmlmemory.c
- entities.c HTMLtree.c parserInternals.c tree.c uri.c valid.c
  xinclude.c xmlIO.c xpath.c xpointer.c: removed the MEM_CLEANUP
  usage.
Daniel
diff --git a/ChangeLog b/ChangeLog
index 3a7032e..1b4d71d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,21 @@
+Tue Mar 27 14:32:06 CEST 2001 Daniel Veillard <Daniel.Veillard@imag.fr>
+
+	* configure.in Makefile.am config.h.in xmlversion.h.in: detect if
+	  we need string functions
+	* trio.[ch] strio.[ch]: embedded the Trio-0.23 string functions
+	  to be able to use them where needed. Applied some changes
+	  to reduce name linking pollution and compile in only what's
+	  needed.
+	* HTMLtree.c debugXML.c entities.c error.c nanoftp.c valid.c
+	  xlink.c xmlversion.h.in xpath.c: got rid of the #ifdef 
+	  for the string manipulation functions
+	* xmlmemory.[ch]: removed DEBUG_MEMORY_FREED and added it automatically
+	  to the free() function of xmlmemory.c
+	* entities.c HTMLtree.c parserInternals.c tree.c uri.c valid.c
+	  xinclude.c xmlIO.c xpath.c xpointer.c: removed the MEM_CLEANUP
+	  usage.
+
+
 Tue Mar 27 02:30:23 CEST 2001 Daniel Veillard <Daniel.Veillard@imag.fr>
 
 	* error.c: applied the context output patch of the error
diff --git a/HTMLtree.c b/HTMLtree.c
index d62072a..12f4e38 100644
--- a/HTMLtree.c
+++ b/HTMLtree.c
@@ -177,12 +177,8 @@
 	return(-1);
 
     if (encoding != NULL) {
-#ifdef HAVE_SNPRINTF
 	snprintf(newcontent, sizeof(newcontent), "text/html; charset=%s",
                 encoding);
-#else
-	sprintf(newcontent, "text/html; charset=%s", encoding);
-#endif
 	newcontent[sizeof(newcontent) - 1] = 0;
     }
 
@@ -663,7 +659,6 @@
     htmlDocContentDump(buf, cur);
     *mem = buf->content;
     *size = buf->use;
-    MEM_CLEANUP(buf, sizeof(xmlBuffer));
     xmlFree(buf);
 }
 
diff --git a/Makefile.am b/Makefile.am
index fb9efd5..fae499b 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -15,29 +15,11 @@
 
 libxml2_la_LDFLAGS = -version-info @LIBXML_VERSION_INFO@
 
-libxml2_la_SOURCES = \
-		SAX.c \
-		entities.c \
-		encoding.c \
-		error.c \
-		parserInternals.c \
-		parser.c \
-		tree.c \
-		hash.c \
-		list.c \
-		xmlIO.c \
-		xmlmemory.c \
-		uri.c \
-		valid.c \
-		xlink.c \
-		HTMLparser.c \
-		HTMLtree.c \
-		debugXML.c \
-		xpath.c \
-		xpointer.c \
-		xinclude.c \
-		nanohttp.c \
-		nanoftp.c
+libxml2_la_SOURCES = SAX.c entities.c encoding.c error.c parserInternals.c  \
+		parser.c tree.c hash.c list.c xmlIO.c xmlmemory.c uri.c  \
+		valid.c xlink.c HTMLparser.c HTMLtree.c debugXML.c xpath.c  \
+		xpointer.c xinclude.c nanohttp.c nanoftp.c  \
+		trio.c strio.c
 
 DEPS = $(top_builddir)/libxml2.la
 LDADDS = $(top_builddir)/libxml2.la @Z_LIBS@ -lm
@@ -428,7 +410,8 @@
 	     $(man_MANS) libxml-2.0.pc.in xmlversion.h.in \
 	     win32/README.MSDev win32/Makefile.mingw \
 	     win32/libxml2/libxml2.dsp win32/libxml2/libxml2_so.dsp \
-	     win32/libxml2/libxml2_a.dsp vms/build_libxml.com vms/config.vms
+	     win32/libxml2/libxml2_a.dsp vms/build_libxml.com vms/config.vms \
+             trio.h strio.h
 
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = libxml-2.0.pc
diff --git a/config.h.in b/config.h.in
index 69da3d8..e44e54e 100644
--- a/config.h.in
+++ b/config.h.in
@@ -31,15 +31,27 @@
 /* Define if you have the fpclass function.  */
 #undef HAVE_FPCLASS
 
+/* Define if you have the fprintf function.  */
+#undef HAVE_FPRINTF
+
 /* Define if you have the isnand function.  */
 #undef HAVE_ISNAND
 
 /* Define if you have the localtime function.  */
 #undef HAVE_LOCALTIME
 
+/* Define if you have the printf function.  */
+#undef HAVE_PRINTF
+
 /* Define if you have the snprintf function.  */
 #undef HAVE_SNPRINTF
 
+/* Define if you have the sprintf function.  */
+#undef HAVE_SPRINTF
+
+/* Define if you have the sscanf function.  */
+#undef HAVE_SSCANF
+
 /* Define if you have the stat function.  */
 #undef HAVE_STAT
 
@@ -55,9 +67,15 @@
 /* Define if you have the strndup function.  */
 #undef HAVE_STRNDUP
 
+/* Define if you have the vfprintf function.  */
+#undef HAVE_VFPRINTF
+
 /* Define if you have the vsnprintf function.  */
 #undef HAVE_VSNPRINTF
 
+/* Define if you have the vsprintf function.  */
+#undef HAVE_VSPRINTF
+
 /* Define if you have the <arpa/inet.h> header file.  */
 #undef HAVE_ARPA_INET_H
 
diff --git a/configure.in b/configure.in
index 553a145..bac5847 100644
--- a/configure.in
+++ b/configure.in
@@ -100,11 +100,15 @@
 
 dnl Checks for library functions.
 AC_FUNC_STRFTIME
-AC_CHECK_FUNCS(strdup strndup strerror snprintf vsnprintf)
+AC_CHECK_FUNCS(strdup strndup strerror)
 AC_CHECK_FUNCS(finite isnand fp_class class fpclass)
 AC_CHECK_FUNCS(strftime localtime)
 AC_CHECK_FUNCS(stat _stat)
 
+dnl Checking the standard string functions availability
+AC_CHECK_FUNCS(printf sprintf fprintf snprintf vfprintf vsprintf vsnprintf sscanf,,
+               NEED_TRIO=1)
+
 dnl Checks for inet libraries:
 AC_CHECK_FUNC(gethostent, , AC_CHECK_LIB(nsl, gethostent))
 AC_CHECK_FUNC(setsockopt, , AC_CHECK_LIB(socket, setsockopt))
@@ -240,6 +244,19 @@
     CFLAGS="-Wall -g -O -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 "
 dnl -Wcast-qual -ansi
 fi
+
+dnl
+dnl Check for trio string functions
+dnl
+
+if test "${NEED_TRIO}" = "1" ; then
+    echo Adding trio library for string functions
+    WITH_TRIO=1
+else    
+    WITH_TRIO=0
+fi
+AC_SUBST(WITH_TRIO)
+
 dnl
 dnl Aloow to disable various pieces
 dnl
diff --git a/debugXML.c b/debugXML.c
index 0c3f334..f9f1c8b 100644
--- a/debugXML.c
+++ b/debugXML.c
@@ -1512,18 +1512,10 @@
 	    next = cur->parent;
 	}
 	if (occur == 0)
-#ifdef HAVE_SNPRINTF
 	    snprintf(buf, sizeof(buf), "%c%s%s", sep, name, buffer);
-#else
-	    sprintf(buf, "%c%s%s", sep, name, buffer);
-#endif
         else
-#ifdef HAVE_SNPRINTF
 	    snprintf(buf, sizeof(buf), "%c%s[%d]%s",
                     sep, name, occur, buffer);
-#else
-	    sprintf(buf, "%c%s[%d]%s", sep, name, occur, buffer);
-#endif
         buf[sizeof(buf) - 1] = 0;
         /*
          * This test prevents buffer overflow, because this routine
@@ -1593,11 +1585,7 @@
         if (ctxt->node == (xmlNodePtr) ctxt->doc)
 	    sprintf(prompt, "%s > ", "/");
 	else if (ctxt->node->name)
-#ifdef HAVE_SNPRINTF
 	    snprintf(prompt, sizeof(prompt), "%s > ", ctxt->node->name);
-#else
-	    sprintf(prompt, "%s > ", ctxt->node->name);
-#endif
         else
 	    sprintf(prompt, "? > ");
         prompt[sizeof(prompt) - 1] = 0;
diff --git a/entities.c b/entities.c
index 3eea5f1..cee722a 100644
--- a/entities.c
+++ b/entities.c
@@ -67,7 +67,6 @@
         xmlFree((char *) entity->content);
     if (entity->orig != NULL)
         xmlFree((char *) entity->orig);
-    MEM_CLEANUP(entity, sizeof(xmlEntity));
     xmlFree(entity);
 }
 
@@ -521,11 +520,7 @@
 	} else if ((sizeof(xmlChar) == 1) && (*cur >= 0x80)) {
 	    char buf[10], *ptr;
 
-#ifdef HAVE_SNPRINTF
 	    snprintf(buf, sizeof(buf), "&#%d;", *cur);
-#else
-	    sprintf(buf, "&#%d;", *cur);
-#endif
             buf[sizeof(buf) - 1] = 0;
             ptr = buf;
 	    while (*ptr != 0) *out++ = *ptr++;
@@ -533,11 +528,7 @@
 	} else if (IS_CHAR(*cur)) {
 	    char buf[10], *ptr;
 
-#ifdef HAVE_SNPRINTF
 	    snprintf(buf, sizeof(buf), "&#%d;", *cur);
-#else
-	    sprintf(buf, "&#%d;", *cur);
-#endif
             buf[sizeof(buf) - 1] = 0;
             ptr = buf;
 	    while (*ptr != 0) *out++ = *ptr++;
@@ -679,11 +670,7 @@
 		    xmlGenericError(xmlGenericErrorContext,
 			    "xmlEncodeEntitiesReentrant : input not UTF-8\n");
 		    doc->encoding = xmlStrdup(BAD_CAST "ISO-8859-1");
-#ifdef HAVE_SNPRINTF
 		    snprintf(buf, sizeof(buf), "&#%d;", *cur);
-#else
-		    sprintf(buf, "&#%d;", *cur);
-#endif
 		    buf[sizeof(buf) - 1] = 0;
 		    ptr = buf;
 		    while (*ptr != 0) *out++ = *ptr++;
@@ -714,11 +701,7 @@
 		    xmlGenericError(xmlGenericErrorContext,
 			"xmlEncodeEntitiesReentrant : char out of range\n");
 		    doc->encoding = xmlStrdup(BAD_CAST "ISO-8859-1");
-#ifdef HAVE_SNPRINTF
 		    snprintf(buf, sizeof(buf), "&#%d;", *cur);
-#else
-		    sprintf(buf, "&#%d;", *cur);
-#endif
 		    buf[sizeof(buf) - 1] = 0;
 		    ptr = buf;
 		    while (*ptr != 0) *out++ = *ptr++;
@@ -728,11 +711,7 @@
 		/*
 		 * We could do multiple things here. Just save as a char ref
 		 */
-#ifdef HAVE_SNPRINTF
 		snprintf(buf, sizeof(buf), "&#x%X;", val);
-#else
-		sprintf(buf, "&#x%X;", val);
-#endif
 		buf[sizeof(buf) - 1] = 0;
 		ptr = buf;
 		while (*ptr != 0) *out++ = *ptr++;
@@ -742,11 +721,7 @@
 	} else if (IS_CHAR(*cur)) {
 	    char buf[10], *ptr;
 
-#ifdef HAVE_SNPRINTF
 	    snprintf(buf, sizeof(buf), "&#%d;", *cur);
-#else
-	    sprintf(buf, "&#%d;", *cur);
-#endif
 	    buf[sizeof(buf) - 1] = 0;
             ptr = buf;
 	    while (*ptr != 0) *out++ = *ptr++;
diff --git a/error.c b/error.c
index b8aaf1b..8daa515 100644
--- a/error.c
+++ b/error.c
@@ -163,21 +163,17 @@
     int       chars, left;
     char      *str, *larger;
 
-    str = (char *) xmlMalloc(100);
+    str = (char *) xmlMalloc(150);
     if (str == NULL)
       return(NULL);
 
-    size = 100;
+    size = 150;
     length = 0;
 
     while (1) {
 	left = size - length;
 		    /* Try to print in the allocated space. */
-#ifdef HAVE_VSNPRINTF
   	chars = vsnprintf(str + length, left, msg, args);
-#else
-	chars = vsprintf(str + length, msg, args);
-#endif
 			  /* If that worked, we're done. */
 	if ((chars > -1) && (chars < left ))
 	    break;
diff --git a/include/libxml/xmlmemory.h b/include/libxml/xmlmemory.h
index c909e4c..12538ab 100644
--- a/include/libxml/xmlmemory.h
+++ b/include/libxml/xmlmemory.h
@@ -26,6 +26,7 @@
 
 #ifdef DEBUG_MEMORY_LOCATION
 #define MEM_LIST /* keep a list of all the allocated memory blocks */
+#define DEBUG_MEMORY_FREED
 #endif
 
 #ifdef DEBUG_MEMORY_FREED
diff --git a/include/libxml/xmlversion.h.in b/include/libxml/xmlversion.h.in
index 934dc7c..7d1471c 100644
--- a/include/libxml/xmlversion.h.in
+++ b/include/libxml/xmlversion.h.in
@@ -24,6 +24,15 @@
 #define LIBXML_TEST_VERSION xmlCheckVersion(@LIBXML_VERSION_NUMBER@);
 
 /*
+ * Whether the trio support need to be configured in
+ */
+#if @WITH_TRIO@
+#define WITH_TRIO
+#else
+#define WITHOUT_TRIO
+#endif
+
+/*
  * Whether the FTP support is configured in
  */
 #if @WITH_FTP@
diff --git a/nanoftp.c b/nanoftp.c
index 0b0954d..d7cc0a6 100644
--- a/nanoftp.c
+++ b/nanoftp.c
@@ -761,11 +761,7 @@
     if (ctxt->user == NULL)
 	sprintf(buf, "USER anonymous\r\n");
     else
-#ifdef HAVE_SNPRINTF
 	snprintf(buf, sizeof(buf), "USER %s\r\n", ctxt->user);
-#else
-	sprintf(buf, "USER %s\r\n", ctxt->user);
-#endif
     buf[sizeof(buf) - 1] = 0;
     len = strlen(buf);
 #ifdef DEBUG_FTP
@@ -788,17 +784,9 @@
     int res;
 
     if (ctxt->passwd == NULL)
-#ifdef HAVE_SNPRINTF
 	snprintf(buf, sizeof(buf), "PASS libxml@%s\r\n", hostname);
-#else
-	sprintf(buf, "PASS libxml@%s\r\n", hostname);
-#endif
     else
-#ifdef HAVE_SNPRINTF
 	snprintf(buf, sizeof(buf), "PASS %s\r\n", ctxt->passwd);
-#else
-	sprintf(buf, "PASS %s\r\n", ctxt->passwd);
-#endif
     buf[sizeof(buf) - 1] = 0;
     len = strlen(buf);
 #ifdef DEBUG_FTP
@@ -947,11 +935,7 @@
 	    /*
 	     * We need proxy auth
 	     */
-#ifdef HAVE_SNPRINTF
 	    snprintf(buf, sizeof(buf), "USER %s\r\n", proxyUser);
-#else
-	    sprintf(buf, "USER %s\r\n", proxyUser);
-#endif
             buf[sizeof(buf) - 1] = 0;
             len = strlen(buf);
 #ifdef DEBUG_FTP
@@ -970,18 +954,10 @@
 			break;
 		case 3:
 		    if (proxyPasswd != NULL)
-#ifdef HAVE_SNPRINTF
 			snprintf(buf, sizeof(buf), "PASS %s\r\n", proxyPasswd);
-#else
-			sprintf(buf, "PASS %s\r\n", proxyPasswd);
-#endif
 		    else
-#ifdef HAVE_SNPRINTF
 			snprintf(buf, sizeof(buf), "PASS libxml@%s\r\n",
 			               hostname);
-#else
-			sprintf(buf, "PASS libxml@%s\r\n", hostname);
-#endif
                     buf[sizeof(buf) - 1] = 0;
                     len = strlen(buf);
 #ifdef DEBUG_FTP
@@ -1021,11 +997,7 @@
 		/* we will try in seqence */
 	    case 1:
 		/* Using SITE command */
-#ifdef HAVE_SNPRINTF
 		snprintf(buf, sizeof(buf), "SITE %s\r\n", ctxt->hostname);
-#else
-		sprintf(buf, "SITE %s\r\n", ctxt->hostname);
-#endif
                 buf[sizeof(buf) - 1] = 0;
                 len = strlen(buf);
 #ifdef DEBUG_FTP
@@ -1051,20 +1023,11 @@
 	    case 2:
 		/* USER user@host command */
 		if (ctxt->user == NULL)
-#ifdef HAVE_SNPRINTF
 		    snprintf(buf, sizeof(buf), "USER anonymous@%s\r\n",
 			           ctxt->hostname);
-#else
-		    sprintf(buf, "USER anonymous@%s\r\n", ctxt->hostname);
-#endif
 		else
-#ifdef HAVE_SNPRINTF
 		    snprintf(buf, sizeof(buf), "USER %s@%s\r\n",
 			           ctxt->user, ctxt->hostname);
-#else
-		    sprintf(buf, "USER %s@%s\r\n",
-			           ctxt->user, ctxt->hostname);
-#endif
                 buf[sizeof(buf) - 1] = 0;
                 len = strlen(buf);
 #ifdef DEBUG_FTP
@@ -1083,17 +1046,9 @@
 		    return(0);
 		}    
 		if (ctxt->passwd == NULL)
-#ifdef HAVE_SNPRINTF
 		    snprintf(buf, sizeof(buf), "PASS libxml@%s\r\n", hostname);
-#else
-		    sprintf(buf, "PASS libxml@%s\r\n", hostname);
-#endif
 		else
-#ifdef HAVE_SNPRINTF
 		    snprintf(buf, sizeof(buf), "PASS %s\r\n", ctxt->passwd);
-#else
-		    sprintf(buf, "PASS %s\r\n", ctxt->passwd);
-#endif
                 buf[sizeof(buf) - 1] = 0;
                 len = strlen(buf);
 #ifdef DEBUG_FTP
@@ -1231,11 +1186,7 @@
      *     250
      *     500, 501, 502, 421, 530, 550
      */
-#ifdef HAVE_SNPRINTF
     snprintf(buf, sizeof(buf), "CWD %s\r\n", directory);
-#else
-    sprintf(buf, "CWD %s\r\n", directory);
-#endif
     buf[sizeof(buf) - 1] = 0;
     len = strlen(buf);
 #ifdef DEBUG_FTP
@@ -1349,15 +1300,9 @@
 	}
 	adp = (unsigned char *) &dataAddr.sin_addr;
 	portp = (unsigned char *) &dataAddr.sin_port;
-#ifdef HAVE_SNPRINTF
 	snprintf(buf, sizeof(buf), "PORT %d,%d,%d,%d,%d,%d\r\n",
 	       adp[0] & 0xff, adp[1] & 0xff, adp[2] & 0xff, adp[3] & 0xff,
 	       portp[0] & 0xff, portp[1] & 0xff);
-#else
-	sprintf(buf, "PORT %d,%d,%d,%d,%d,%d\r\n",
-	       adp[0] & 0xff, adp[1] & 0xff, adp[2] & 0xff, adp[3] & 0xff,
-	       portp[0] & 0xff, portp[1] & 0xff);
-#endif
         buf[sizeof(buf) - 1] = 0;
         len = strlen(buf);
 #ifdef DEBUG_FTP
@@ -1590,11 +1535,7 @@
 	ctxt->dataFd = xmlNanoFTPGetConnection(ctxt);
 	if (ctxt->dataFd == -1)
 	    return(-1);
-#ifdef HAVE_SNPRINTF
 	snprintf(buf, sizeof(buf), "LIST -L %s\r\n", filename);
-#else
-	sprintf(buf, "LIST -L %s\r\n", filename);
-#endif
     }
     buf[sizeof(buf) - 1] = 0;
     len = strlen(buf);
@@ -1706,17 +1647,9 @@
 	return(-res);
     }
     if (filename == NULL)
-#ifdef HAVE_SNPRINTF
 	snprintf(buf, sizeof(buf), "RETR %s\r\n", ctxt->path);
-#else
-	sprintf(buf, "RETR %s\r\n", ctxt->path);
-#endif
     else
-#ifdef HAVE_SNPRINTF
 	snprintf(buf, sizeof(buf), "RETR %s\r\n", filename);
-#else
-	sprintf(buf, "RETR %s\r\n", filename);
-#endif
     buf[sizeof(buf) - 1] = 0;
     len = strlen(buf);
 #ifdef DEBUG_FTP
diff --git a/parserInternals.c b/parserInternals.c
index e0cdf31..a89c451 100644
--- a/parserInternals.c
+++ b/parserInternals.c
@@ -1877,7 +1877,6 @@
         input->free((xmlChar *) input->base);
     if (input->buf != NULL) 
         xmlFreeParserInputBuffer(input->buf);
-    MEM_CLEANUP(input, sizeof(xmlParserInput));
     xmlFree(input);
 }
 
diff --git a/strio.c b/strio.c
new file mode 100644
index 0000000..2910801
--- /dev/null
+++ b/strio.c
@@ -0,0 +1,568 @@
+/*************************************************************************
+ *
+ * $Id$
+ *
+ * Copyright (C) 1998 Bjorn Reese and Daniel Stenberg.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE AUTHORS AND
+ * CONTRIBUTORS ACCEPT NO RESPONSIBILITY IN ANY CONCEIVABLE MANNER.
+ *
+ ************************************************************************/
+
+/* DV for libxml */
+#include "xmlversion.h"
+#ifdef WITH_TRIO
+
+/* FIXME
+ * StrToLongDouble
+ */
+ 
+static const char rcsid[] = "@(#)$Id$";
+
+#if defined(unix) || defined(__xlC__)
+# define PLATFORM_UNIX
+#elif defined(WIN32) || defined(_WIN32)
+# define PLATFORM_WIN32
+#elif defined(AMIGA) && defined(__GNUC__)
+# define PLATFORM_UNIX
+#endif
+
+#if defined(__STDC__) && (__STDC_VERSION__ >= 199901L)
+# define TRIO_C99
+#endif
+
+#include "strio.h"
+#include <string.h>
+#include <ctype.h>
+#include <stdarg.h>
+#include <time.h>
+#include <math.h>
+#ifndef DEBUG
+# define NDEBUG
+#endif
+#include <assert.h>
+
+#ifndef NULL
+# define NULL 0
+#endif
+#define NIL ((char)0)
+#ifndef FALSE
+# define FALSE (1 == 0)
+# define TRUE (! FALSE)
+#endif
+
+#define VALID(x) (NULL != (x))
+#define INVALID(x) (NULL == (x))
+
+#if defined(PLATFORM_UNIX)
+# define USE_STRCASECMP
+# define USE_STRNCASECMP
+# define USE_STRERROR
+#elif defined(PLATFORM_WIN32)
+# define USE_STRCMPI
+#endif
+
+/*************************************************************************
+ * StrAppendMax
+ */
+char *StrAppendMax(char *target, size_t max, const char *source)
+{
+  assert(VALID(target));
+  assert(VALID(source));
+  assert(max > 0);
+
+  max -= StrLength(target) + 1;
+  return (max > 0) ? strncat(target, source, max) : target;
+}
+
+/*************************************************************************
+ * StrCopyMax
+ */
+char *StrCopyMax(char *target, size_t max, const char *source)
+{
+  assert(VALID(target));
+  assert(VALID(source));
+  assert(max > 0); /* Includes != 0 */
+
+  target = strncpy(target, source, max - 1);
+  target[max - 1] = (char)0;
+  return target;
+}
+
+/*************************************************************************
+ * StrDuplicate
+ */
+char *StrDuplicate(const char *source)
+{
+  char *target;
+
+  assert(VALID(source));
+
+  target = (char *)malloc(StrLength(source) + 1);
+  if (target)
+    {
+      StrCopy(target, source);
+    }
+  return target;
+}
+
+/*************************************************************************
+ * StrDuplicateMax
+ */
+char *StrDuplicateMax(const char *source, size_t max)
+{
+  char *target;
+  size_t len;
+
+  assert(VALID(source));
+  assert(max > 0);
+
+  /* Make room for string plus a terminating zero */
+  len = StrLength(source) + 1;
+  if (len > max)
+    {
+      len = max;
+    }
+  target = (char *)malloc(len);
+  if (target)
+    {
+      StrCopyMax(target, len, source);
+    }
+  return target;
+}
+
+/*************************************************************************
+ * StrEqual
+ */
+int StrEqual(const char *first, const char *second)
+{
+  assert(VALID(first));
+  assert(VALID(second));
+
+  if (VALID(first) && VALID(second))
+    {
+#if defined(USE_STRCASECMP)
+      return (0 == strcasecmp(first, second));
+#elif defined(USE_STRCMPI)
+      return (0 == strcmpi(first, second));
+#else
+      while ((*first != NIL) && (*second != NIL))
+	{
+	  if (toupper(*first) != toupper(*second))
+	    {
+	      break;
+	    }
+	  first++;
+	  second++;
+	}
+      return ((*first == NIL) && (*second == NIL));
+#endif
+    }
+  return FALSE;
+}
+
+/*************************************************************************
+ * StrEqualCase
+ */
+int StrEqualCase(const char *first, const char *second)
+{
+  assert(VALID(first));
+  assert(VALID(second));
+
+  if (VALID(first) && VALID(second))
+    {
+      return (0 == strcmp(first, second));
+    }
+  return FALSE;
+}
+
+/*************************************************************************
+ * StrEqualCaseMax
+ */
+int StrEqualCaseMax(const char *first, size_t max, const char *second)
+{
+  assert(VALID(first));
+  assert(VALID(second));
+
+  if (VALID(first) && VALID(second))
+    {
+      return (0 == strncmp(first, second, max));
+    }
+  return FALSE;
+}
+
+/*************************************************************************
+ * StrEqualMax
+ */
+int StrEqualMax(const char *first, size_t max, const char *second)
+{
+  assert(VALID(first));
+  assert(VALID(second));
+
+  if (VALID(first) && VALID(second))
+    {
+#if defined(USE_STRNCASECMP)
+      return (0 == strncasecmp(first, second, max));
+#else
+      /* Not adequately tested yet */
+      size_t cnt = 0;
+      while ((*first != NIL) && (*second != NIL) && (cnt <= max))
+	{
+	  if (toupper(*first) != toupper(*second))
+	    {
+	      break;
+	    }
+	  first++;
+	  second++;
+	  cnt++;
+	}
+      return ((cnt == max) || ((*first == NIL) && (*second == NIL)));
+#endif
+    }
+  return FALSE;
+}
+
+/*************************************************************************
+ * StrError
+ */
+const char *StrError(int errorNumber)
+{
+#if defined(USE_STRERROR)
+  return strerror(errorNumber);
+#else
+  return "unknown";
+#endif
+}
+
+/*************************************************************************
+ * StrFormatDate
+ */
+size_t StrFormatDateMax(char *target,
+			size_t max,
+			const char *format,
+			const struct tm *datetime)
+{
+  assert(VALID(target));
+  assert(VALID(format));
+  assert(VALID(datetime));
+  assert(max > 0);
+  
+  return strftime(target, max, format, datetime);
+}
+
+/*************************************************************************
+ * StrHash
+ */
+unsigned long StrHash(const char *string, int type)
+{
+  unsigned long value = 0L;
+  char ch;
+
+  assert(VALID(string));
+  
+  switch (type)
+    {
+    case STRIO_HASH_PLAIN:
+      while ( (ch = *string++) != NIL )
+	{
+	  value *= 31;
+	  value += (unsigned long)ch;
+	}
+      break;
+    default:
+      assert(FALSE);
+      break;
+    }
+  return value;
+}
+
+/*************************************************************************
+ * StrMatch
+ */
+int StrMatch(char *string, char *pattern)
+{
+  assert(VALID(string));
+  assert(VALID(pattern));
+  
+  for (; ('*' != *pattern); ++pattern, ++string)
+    {
+      if (NIL == *string)
+	{
+	  return (NIL == *pattern);
+	}
+      if ((toupper(*string) != toupper(*pattern))
+	  && ('?' != *pattern))
+	{
+	  return FALSE;
+	}
+    }
+  /* two-line patch to prevent *too* much recursiveness: */
+  while ('*' == pattern[1])
+    pattern++;
+
+  do
+    {
+      if ( StrMatch(string, &pattern[1]) )
+	{
+	  return TRUE;
+	}
+    }
+  while (*string++);
+  
+  return FALSE;
+}
+
+/*************************************************************************
+ * StrMatchCase
+ */
+int StrMatchCase(char *string, char *pattern)
+{
+  assert(VALID(string));
+  assert(VALID(pattern));
+  
+  for (; ('*' != *pattern); ++pattern, ++string)
+    {
+      if (NIL == *string)
+	{
+	  return (NIL == *pattern);
+	}
+      if ((*string != *pattern)
+	  && ('?' != *pattern))
+	{
+	  return FALSE;
+	}
+    }
+  /* two-line patch to prevent *too* much recursiveness: */
+  while ('*' == pattern[1])
+    pattern++;
+
+  do
+    {
+      if ( StrMatchCase(string, &pattern[1]) )
+	{
+	  return TRUE;
+	}
+    }
+  while (*string++);
+  
+  return FALSE;
+}
+
+/*************************************************************************
+ * StrSpanFunction
+ *
+ * Untested
+ */
+size_t StrSpanFunction(char *source, int (*Function)(int))
+{
+  size_t count = 0;
+
+  assert(VALID(source));
+  assert(VALID(Function));
+  
+  while (*source != NIL)
+    {
+      if (Function(*source))
+	break; /* while */
+      source++;
+      count++;
+    }
+  return count;
+}
+
+/*************************************************************************
+ * StrSubstringMax
+ */
+char *StrSubstringMax(const char *string, size_t max, const char *find)
+{
+  size_t count;
+  size_t size;
+  char *result = NULL;
+
+  assert(VALID(string));
+  assert(VALID(find));
+  
+  size = StrLength(find);
+  if (size >= max)
+    {
+      for (count = 0; count > max - size; count++)
+	{
+	  if (StrEqualMax(find, size, &string[count]))
+	    {
+	      result = (char *)&string[count];
+	      break;
+	    }
+	}
+    }
+  return result;
+}
+
+/*************************************************************************
+ * StrToDouble
+ *
+ * double ::= [ <sign> ]
+ *            ( <number> |
+ *              <number> <decimal_point> <number> |
+ *              <decimal_point> <number> )
+ *            [ <exponential> [ <sign> ] <number> ]
+ * number ::= 1*( <digit> )
+ * digit ::= ( '0' | '1' | '2' | '3' | '4' | '5' | '6' | '7' | '8' | '9' )
+ * exponential ::= ( 'e' | 'E' )
+ * sign ::= ( '-' | '+' )
+ * decimal_point ::= '.'
+ */
+double StrToDouble(const char *source, const char **endp)
+{
+#if defined(TRIO_C99)
+  return strtod(source, endp);
+#else
+  /* Preliminary code */
+  int isNegative = FALSE;
+  int isExponentNegative = FALSE;
+  unsigned long integer = 0;
+  unsigned long fraction = 0;
+  unsigned long fracdiv = 1;
+  unsigned long exponent = 0;
+  double value = 0.0;
+
+  /* First try hex-floats */
+  if ((source[0] == '0') && ((source[1] == 'x') || (source[1] == 'X')))
+    {
+      source += 2;
+      while (isxdigit((int)*source))
+	{
+	  integer *= 16;
+	  integer += (isdigit((int)*source) ? (*source - '0') :
+	    (isupper((int)*source) ? (*source - 'A') :
+	     (*source - 'a')));
+	  source++;
+	}
+      if (*source == '.')
+	{
+	  source++;
+	  while (isxdigit((int)*source))
+	    {
+	      fraction *= 16;
+	      fraction += (isdigit((int)*source) ? (*source - '0') :
+			   (isupper((int)*source) ? (*source - 'A') :
+			    (*source - 'a')));
+	      fracdiv *= 16;
+	      source++;
+	    }
+	  if ((*source == 'p') || (*source == 'P'))
+	    {
+	      source++;
+	      if ((*source == '+') || (*source == '-'))
+		{
+		  isExponentNegative = (*source == '-');
+		  source++;
+		}
+	      while (isdigit((int)*source))
+		{
+		  exponent *= 10;
+		  exponent += (*source - '0');
+		  source++;
+		}
+	    }
+	}
+    }
+  else /* Then try normal decimal floats */
+    {
+      isNegative = (*source == '-');
+      /* Skip sign */
+      if ((*source == '+') || (*source == '-'))
+	source++;
+
+      /* Integer part */
+      while (isdigit((int)*source))
+	{
+	  integer *= 10;
+	  integer += (*source - '0');
+	  source++;
+	}
+
+      if (*source == '.')
+	{
+	  source++; /* skip decimal point */
+	  while (isdigit((int)*source))
+	    {
+	      fraction *= 10;
+	      fraction += (*source - '0');
+	      fracdiv *= 10;
+	      source++;
+	    }
+	}
+      if ((*source == 'e') || (*source == 'E'))
+	{
+	  source++; /* Skip exponential indicator */
+	  isExponentNegative = (*source == '-');
+	  if ((*source == '+') || (*source == '-'))
+	    source++;
+	  while (isdigit((int)*source))
+	    {
+	      exponent *= 10;
+	      exponent += (*source - '0');
+	      source++;
+	    }
+	}
+    }
+  
+  value = (double)integer;
+  if (fraction != 0)
+    {
+      value += (double)fraction / (double)fracdiv;
+    }
+  if (exponent != 0)
+    {
+      if (isExponentNegative)
+	value /= pow((double)10, (double)exponent);
+      else
+	value *= pow((double)10, (double)exponent);
+    }
+  if (isNegative)
+    value = -value;
+
+  if (endp)
+    *endp = source;
+  return value;
+#endif
+}
+
+/*************************************************************************
+ * StrToFloat
+ */
+float StrToFloat(const char *source, const char **endp)
+{
+#if defined(TRIO_C99)
+  return strtof(source, endp);
+#else
+  return (float)StrToDouble(source, endp);
+#endif
+}
+
+/*************************************************************************
+ * StrToUpper
+ */
+int StrToUpper(char *target)
+{
+  int i = 0;
+
+  assert(VALID(target));
+  
+  while (NIL != *target)
+    {
+      *target = toupper(*target);
+      target++;
+      i++;
+    }
+  return i;
+}
+
+/* DV for libxml */
+#endif /* WITH_TRIO */
diff --git a/strio.h b/strio.h
new file mode 100644
index 0000000..a31eae4
--- /dev/null
+++ b/strio.h
@@ -0,0 +1,216 @@
+/*************************************************************************
+ *
+ * $Id$
+ *
+ * Copyright (C) 1998 Bjorn Reese and Daniel Stenberg.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE AUTHORS AND
+ * CONTRIBUTORS ACCEPT NO RESPONSIBILITY IN ANY CONCEIVABLE MANNER.
+ *
+ ************************************************************************/
+
+#ifndef H_STRIO
+#define H_STRIO
+
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include "assert.h"
+
+/*
+ * StrAppend(target, source)
+ * StrAppendMax(target, maxsize, source)
+ *
+ *   Append 'source' to 'target'
+ *
+ * target = StrAlloc(size)
+ *
+ *   Allocate a new string
+ *
+ * StrContains(target, substring)
+ *
+ *   Find out if the string 'substring' is
+ *   contained in the string 'target'
+ *
+ * StrCopy(target, source)
+ * StrCopyMax(target, maxsize, source)
+ *
+ *   Copy 'source' to 'target'
+ *
+ * target = StrDuplicate(source)
+ * target = StrDuplicateMax(source, maxsize)
+ *
+ *   Allocate and copy 'source' to 'target'
+ *
+ * StrEqual(first, second)
+ * StrEqualMax(first, maxsize, second)
+ *
+ *   Compare if 'first' is equal to 'second'.
+ *   Case-independent.
+ *
+ * StrEqualCase(first, second)
+ * StrEqualCaseMax(first, maxsize, second)
+ *
+ *   Compare if 'first' is equal to 'second'
+ *   Case-dependent. Please note that the use of the
+ *   word 'case' has the opposite meaning as that of
+ *   strcasecmp().
+ *
+ * StrFormat(target, format, ...)
+ * StrFormatMax(target, maxsize, format, ...)
+ *
+ *   Build 'target' according to 'format' and succesive
+ *   arguments. This is equal to the sprintf() and
+ *   snprintf() functions.
+ *
+ * StrFormatDate(target, format, ...)
+ *
+ * StrFree(target)
+ *
+ *   De-allocates a string
+ *
+ * StrHash(string, type)
+ *
+ *   Calculates the hash value of 'string' based on the
+ *   'type'.
+ *
+ * StrIndex(target, character)
+ * StrIndexLast(target, character)
+ *
+ *   Find the first/last occurrence of 'character' in
+ *   'target'
+ *
+ * StrLength(target)
+ *
+ *   Return the length of 'target'
+ *
+ * StrMatch(string, pattern)
+ * StrMatchCase(string, pattern)
+ *
+ *   Find 'pattern' within 'string'. 'pattern' may contain
+ *   wildcards such as * (asterics) and ? (question mark)
+ *   which matches zero or more characters and exactly
+ *   on character respectively
+ *
+ * StrScan(source, format, ...)
+ *
+ *   Equal to sscanf()
+ *
+ * StrSubstring(target, substring)
+ *
+ *   Find the first occurrence of the string 'substring'
+ *   within the string 'target'
+ *
+ * StrTokenize(target, list)
+ *
+ *   Split 'target' into the first token delimited by
+ *   one of the characters in 'list'. If 'target' is
+ *   NULL then next token will be returned.
+ *
+ * StrToUpper(target)
+ *
+ *   Convert all lower case characters in 'target' into
+ *   upper case characters.
+ */
+
+enum {
+  STRIO_HASH_NONE = 0,
+  STRIO_HASH_PLAIN,
+  STRIO_HASH_TWOSIGNED
+};
+
+#if !defined(DEBUG) || defined(__DECC)
+#define StrAppend(x,y) strcat((x), (y))
+#define StrAlloc(n) ((char *)calloc(1, (n)))
+#define StrContains(x,y) (0 != strstr((x), (y)))
+#define StrCopy(x,y) strcpy((x), (y))
+#define StrFree(x) free((x))
+#define StrIndex(x,y) strchr((x), (y))
+#define StrIndexLast(x,y) strrchr((x), (y))
+#define StrLength(x) strlen((x))
+#define StrSubstring(x,y) strstr((x), (y))
+#define StrTokenize(x,y) strtok((x), (y))
+#define StrToLong(x,y,n) strtol((x), (y), (n))
+#define StrToUnsignedLong(x,y,n) strtoul((x), (y), (n))
+#else /* DEBUG */
+ /*
+  * To be able to use these macros everywhere, including in
+  * if() sentences, the assertions are put first in a comma
+  * seperated list.
+  *
+  * Unfortunately the DECC compiler does not seem to like this
+  * so it will use the un-asserted functions above for the
+  * debugging case too.
+  */
+#define StrAppend(x,y) \
+     (assert((x) != NULL),\
+      assert((y) != NULL),\
+      strcat((x), (y)))
+#define StrAlloc(n) \
+     (assert((n) > 0),\
+      ((char *)calloc(1, (n))))
+#define StrContains(x,y) \
+     (assert((x) != NULL),\
+      assert((y) != NULL),\
+      (0 != strstr((x), (y))))
+#define StrCopy(x,y) \
+     (assert((x) != NULL),\
+      assert((y) != NULL),\
+      strcpy((x), (y)))
+#define StrIndex(x,c) \
+     (assert((x) != NULL),\
+      strchr((x), (c)))
+#define StrIndexLast(x,c) \
+     (assert((x) != NULL),\
+      strrchr((x), (c)))
+#define StrFree(x) \
+     (assert((x) != NULL),\
+      free((x)))
+#define StrLength(x) \
+     (assert((x) != NULL),\
+      strlen((x)))
+#define StrSubstring(x,y) \
+     (assert((x) != NULL),\
+      assert((y) != NULL),\
+      strstr((x), (y)))
+#define StrTokenize(x,y) \
+     (assert((y) != NULL),\
+      strtok((x), (y)))
+#define StrToLong(x,y,n) \
+     (assert((x) != NULL),\
+      assert((y) != NULL),\
+      assert((n) >= 2 && (n) <= 36),\
+      strtol((x), (y), (n)))
+#define StrToUnsignedLong(x,y,n) \
+     (assert((x) != NULL),\
+      assert((y) != NULL),\
+      assert((n) >= 2 && (n) <= 36),\
+      strtoul((x), (y), (n)))
+#endif /* DEBUG */
+
+char *StrAppendMax(char *target, size_t max, const char *source);
+char *StrCopyMax(char *target, size_t max, const char *source);
+char *StrDuplicate(const char *source);
+char *StrDuplicateMax(const char *source, size_t max);
+int StrEqual(const char *first, const char *second);
+int StrEqualCase(const char *first, const char *second);
+int StrEqualCaseMax(const char *first, size_t max, const char *second);
+int StrEqualMax(const char *first, size_t max, const char *second);
+const char *StrError(int);
+size_t StrFormatDateMax(char *target, size_t max, const char *format, const struct tm *datetime);
+unsigned long StrHash(const char *string, int type);
+int StrMatch(char *string, char *pattern);
+int StrMatchCase(char *string, char *pattern);
+size_t StrSpanFunction(char *source, int (*Function)(int));
+char *StrSubstringMax(const char *string, size_t max, const char *find);
+float StrToFloat(const char *source, const char **target);
+double StrToDouble(const char *source, const char **target);
+int StrToUpper(char *target);
+
+#endif /* H_STRIO */
diff --git a/tree.c b/tree.c
index 12cc9a4..1735258 100644
--- a/tree.c
+++ b/tree.c
@@ -213,7 +213,6 @@
     }
     if (cur->href != NULL) xmlFree((char *) cur->href);
     if (cur->prefix != NULL) xmlFree((char *) cur->prefix);
-    MEM_CLEANUP(cur, sizeof(xmlNs));
     xmlFree(cur);
 }
 
@@ -446,7 +445,6 @@
     if (cur->pentities != NULL)
         xmlFreeEntitiesTable((xmlEntitiesTablePtr) cur->pentities);
 
-    MEM_CLEANUP(cur, sizeof(xmlDtd));
     xmlFree(cur);
 }
 
@@ -508,7 +506,6 @@
     if (cur->ids != NULL) xmlFreeIDTable((xmlIDTablePtr) cur->ids);
     if (cur->refs != NULL) xmlFreeRefTable((xmlRefTablePtr) cur->refs);
     if (cur->URL != NULL) xmlFree((char *) cur->URL);
-    MEM_CLEANUP(cur, sizeof(xmlDoc));
     xmlFree(cur);
 }
 
@@ -1133,7 +1130,6 @@
         xmlRemoveID(cur->parent->doc, cur);
     if (cur->name != NULL) xmlFree((char *) cur->name);
     if (cur->children != NULL) xmlFreeNodeList(cur->children);
-    MEM_CLEANUP(cur, sizeof(xmlAttr));
     xmlFree(cur);
 }
 
@@ -2329,7 +2325,6 @@
 	(cur->name != xmlStringComment))
 	xmlFree((char *) cur->name);
     if (cur->nsDef != NULL) xmlFreeNsList(cur->nsDef);
-    MEM_CLEANUP(cur, sizeof(xmlNode));
     xmlFree(cur);
 }
 
@@ -4511,14 +4506,8 @@
 	return;
     }
     if (buf->content != NULL) {
-#ifndef XML_USE_BUFFER_CONTENT
-        MEM_CLEANUP(buf->content, BASE_BUFFER_SIZE);
-#else
-        MEM_CLEANUP(buf->content, buf->size);
-#endif
         xmlFree(buf->content);
     }
-    MEM_CLEANUP(buf, sizeof(xmlBuffer));
     xmlFree(buf);
 }
 
@@ -4532,7 +4521,7 @@
 xmlBufferEmpty(xmlBufferPtr buf) {
     if (buf->content == NULL) return;
     buf->use = 0;
-    MEM_CLEANUP(buf->content, buf->size);
+    memset(buf->content, 0, buf->size);
 }
 
 /**
diff --git a/trio.c b/trio.c
new file mode 100644
index 0000000..962f21d
--- /dev/null
+++ b/trio.c
@@ -0,0 +1,3719 @@
+/*************************************************************************
+ *
+ * $Id$
+ *
+ * Copyright (C) 1998 Bjorn Reese and Daniel Stenberg.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE AUTHORS AND
+ * CONTRIBUTORS ACCEPT NO RESPONSIBILITY IN ANY CONCEIVABLE MANNER.
+ *
+ *************************************************************************
+ *
+ * Avoid heap allocation at all costs to ensure that the trio functions
+ * are async-safe. The exceptions are the printf/fprintf functions, which
+ * uses fputc, and the asprintf functions and the <alloc> modifier, which
+ * by design are required to allocate form the heap.
+ *
+ ************************************************************************/
+
+/* DV for libxml */
+#include "xmlversion.h"
+#ifdef WITH_TRIO
+#include "config.h"
+/*
+ * DV changes applied
+ * excluded all unused interfaces, renamed them without the trio prefix
+ */
+
+/*
+ * FIXME:
+ *  - Scan is probably too permissive about its modifiers.
+ *  - Width for floating-point numbers (does it make sense?)
+ *  - Add hex-float to TrioReadDouble
+ *  - C escapes in %#[] ?
+ *  - Multibyte characters (done for format parsing, except scan groups)
+ *  - Widechar
+ *  - Complex numbers? (C99 _Complex)
+ *  - Boolean values? (C99 _Bool)
+ *  - C99 NaN(n-char-sequence) missing
+ *  - Should we support the GNU %a alloc modifier? GNU has an ugly hack
+ *    for %a, because C99 used %a for other purposes. If specified as
+ *    %as or %a[ it is interpreted as the alloc modifier, otherwise as
+ *    the C99 hex-float. This means that you cannot scan %as as a hex-float
+ *    immediately followed by an 's'.
+ */
+
+static const char rcsid[] = "@(#)$Id$";
+
+#if defined(__STDC__) && (__STDC_VERSION__ >= 199901L)
+# define TRIO_C99 /* FIXME: C99 support has not been properly tested */
+#endif
+#define TRIO_BSD
+#define TRIO_GNU
+#define TRIO_MISC
+#define TRIO_UNIX98
+#define TRIO_EXTENSION
+#define TRIO_ERRORS
+
+#if defined(unix) || defined(__xlC__) /* AIX xlC workaround */
+# define PLATFORM_UNIX
+#elif defined(AMIGA) && defined(__GNUC__)
+# define PLATFORM_UNIX
+#endif
+
+/*************************************************************************
+ * Include files
+ */
+
+
+#include "trio.h"
+#include "strio.h"
+#include <ctype.h>
+#include <math.h>
+#include <limits.h>
+#include <float.h>
+#include <stdarg.h>
+#include <errno.h>
+#if defined(TRIO_C99)
+# include <stdint.h>
+#endif
+#if defined(PLATFORM_UNIX)
+# include <unistd.h>
+# include <locale.h>
+# define USE_LOCALE
+#endif
+#ifndef DEBUG
+# define NDEBUG
+#endif
+#include <assert.h>
+
+/*************************************************************************
+ * Generic definitions
+ */
+
+#ifndef NULL
+# define NULL 0
+#endif
+#define NIL ((char)0)
+#ifdef __cplusplus
+# undef TRUE
+# undef FALSE
+# define TRUE true
+# define FALSE false
+# define BOOLEAN_T bool
+#else
+# ifndef FALSE
+#  define FALSE (1 == 0)
+#  define TRUE (! FALSE)
+# endif
+# define BOOLEAN_T int
+#endif
+
+/* mincore() can be used for debugging purposes */
+#define VALID(x) (NULL != (x))
+
+/* Encode the error code and the position. This is decoded
+ * with TRIO_ERROR_CODE and TRIO_ERROR_POSITION.
+ */
+#if defined(TRIO_ERRORS)
+# define TRIO_ERROR_RETURN(x,y) (- ((x) + ((y) << 8)))
+#else
+# define TRIO_ERROR_RETURN(x,y) (-1)
+#endif
+
+/*************************************************************************
+ * Internal definitions
+ */
+
+#if defined(__STDC_ISO_10646__) || defined(MB_LEN_MAX)
+# define USE_MULTIBYTE
+#endif
+
+#if !defined(USE_LONGLONG)
+# if defined(__GNUC__) && !defined(__STRICT_ANSI__)
+#  define USE_LONGLONG
+# elif defined(__SUNPRO_C)
+#  define USE_LONGLONG
+# elif defined(_LONG_LONG) || defined(_LONGLONG)
+#  define USE_LONGLONG
+# endif
+#endif
+
+/* The extra long numbers */
+#if defined(USE_LONGLONG)
+# define LONGLONG long long
+# define ULONGLONG unsigned long long
+#else
+# define LONGLONG long
+# define ULONGLONG unsigned long
+#endif
+
+/* The longest possible integer */
+#if defined(TRIO_C99)
+# define LONGEST uintmax_t
+# define SLONGEST intmax_t
+#else
+# define LONGEST ULONGLONG
+# define SLONGEST LONGLONG
+#endif
+
+/* The maximal number of digits are for base 2 */
+#define MAX_CHARS_IN(x) (sizeof(x) * CHAR_BIT + 1)
+/* The width of a pointer. The number of bits in a hex digit is 4 */
+#define POINTER_WIDTH ((sizeof("0x") - 1) + sizeof(void *) * CHAR_BIT / 4)
+
+/* Infinite and Not-A-Number for floating-point */
+#if defined(HUGE_VAL)
+# define USE_INFINITE
+# if defined(TRIO_C99)
+#  define IS_INFINITE(x) isinf(x)
+# else
+#  define IS_INFINITE(x) (((x)==HUGE_VAL) ? 1 : (((x)==-HUGE_VAL) ? -1 : 0))
+# endif
+# define INFINITE_LOWER "inf"
+# define INFINITE_UPPER "INF"
+# define LONG_INFINITE_LOWER "infinite"
+# define LONG_INFINITE_UPPER "INFINITE"
+#endif
+#if defined(NAN)
+# define USE_NAN
+# define IS_NAN(x) isnan(x)
+# define NAN_LOWER "nan"
+# define NAN_UPPER "NAN"
+#endif
+
+/* Various constants */
+enum {
+  TYPE_PRINT = 1,
+  TYPE_SCAN  = 2,
+
+  /* Flags. Use maximum 32 */
+  FLAGS_NEW                 = 0,
+  FLAGS_STICKY              = 1,
+  FLAGS_SPACE               = 2 * FLAGS_STICKY,
+  FLAGS_SHOWSIGN            = 2 * FLAGS_SPACE,
+  FLAGS_LEFTADJUST          = 2 * FLAGS_SHOWSIGN,
+  FLAGS_ALTERNATIVE         = 2 * FLAGS_LEFTADJUST,
+  FLAGS_SHORT               = 2 * FLAGS_ALTERNATIVE,
+  FLAGS_SHORTSHORT          = 2 * FLAGS_SHORT,
+  FLAGS_LONG                = 2 * FLAGS_SHORTSHORT,
+  FLAGS_QUAD                = 2 * FLAGS_LONG,
+  FLAGS_LONGDOUBLE          = 2 * FLAGS_QUAD,
+  FLAGS_SIZE_T              = 2 * FLAGS_LONGDOUBLE,
+  FLAGS_PTRDIFF_T           = 2 * FLAGS_SIZE_T,
+  FLAGS_INTMAX_T            = 2 * FLAGS_PTRDIFF_T,
+  FLAGS_NILPADDING          = 2 * FLAGS_INTMAX_T,
+  FLAGS_UNSIGNED            = 2 * FLAGS_NILPADDING,
+  FLAGS_UPPER               = 2 * FLAGS_UNSIGNED,
+  FLAGS_WIDTH               = 2 * FLAGS_UPPER,
+  FLAGS_WIDTH_PARAMETER     = 2 * FLAGS_WIDTH,
+  FLAGS_PRECISION           = 2 * FLAGS_WIDTH_PARAMETER,
+  FLAGS_PRECISION_PARAMETER = 2 * FLAGS_PRECISION,
+  FLAGS_BASE                = 2 * FLAGS_PRECISION_PARAMETER,
+  FLAGS_BASE_PARAMETER      = 2 * FLAGS_BASE,
+  FLAGS_FLOAT_E             = 2 * FLAGS_BASE_PARAMETER,
+  FLAGS_FLOAT_G             = 2 * FLAGS_FLOAT_E,
+  FLAGS_QUOTE               = 2 * FLAGS_FLOAT_G,
+  FLAGS_WIDECHAR            = 2 * FLAGS_QUOTE,
+  FLAGS_ALLOC               = 2 * FLAGS_WIDECHAR,
+  FLAGS_IGNORE              = 2 * FLAGS_ALLOC,
+  FLAGS_IGNORE_PARAMETER    = 2 * FLAGS_IGNORE,
+  FLAGS_SIZE_PARAMETER      = 2 * FLAGS_IGNORE_PARAMETER,
+  /* Reused flags */
+  FLAGS_EXCLUDE             = FLAGS_SHORT,
+  /* Compounded flags */
+  FLAGS_ALL_SIZES           = FLAGS_LONG | FLAGS_QUAD | FLAGS_INTMAX_T | FLAGS_PTRDIFF_T | FLAGS_SIZE_T,
+
+  NO_POSITION  = -1,
+  NO_WIDTH     =  0,
+  NO_PRECISION = -1,
+  NO_SIZE      = -1,
+
+  NO_BASE      = -1,
+  MIN_BASE     =  2,
+  MAX_BASE     = 36,
+  BASE_BINARY  =  2,
+  BASE_OCTAL   =  8,
+  BASE_DECIMAL = 10,
+  BASE_HEX     = 16,
+
+  /* Maximal number of allowed parameters */
+  MAX_PARAMETERS = 64,
+  /* Maximal number of characters in class */
+  MAX_CHARACTER_CLASS = UCHAR_MAX,
+
+  /* Maximal length of locale separator strings */
+  MAX_LOCALE_SEPARATOR_LENGTH = 64,
+  /* Maximal number of integers in grouping */
+  MAX_LOCALE_GROUPS = 64
+};
+
+#define NO_GROUPING ((int)CHAR_MAX)
+
+/* Fundamental formatting parameter types */
+#define FORMAT_UNKNOWN   0
+#define FORMAT_INT       1
+#define FORMAT_DOUBLE    2
+#define FORMAT_CHAR      3
+#define FORMAT_STRING    4
+#define FORMAT_POINTER   5
+#define FORMAT_COUNT     6
+#define FORMAT_PARAMETER 7
+#define FORMAT_GROUP     8
+#if defined(TRIO_GNU)
+# define FORMAT_ERRNO   10
+#endif
+
+/* Character constants */
+#define CHAR_IDENTIFIER '%'
+#define CHAR_BACKSLASH '\\'
+#define CHAR_QUOTE '\"'
+#define CHAR_ADJUST ' '
+
+/* Character class expressions */
+#define CLASS_ALNUM ":alnum:"
+#define CLASS_ALPHA ":alpha:"
+#define CLASS_CNTRL ":cntrl:"
+#define CLASS_DIGIT ":digit:"
+#define CLASS_GRAPH ":graph:"
+#define CLASS_LOWER ":lower:"
+#define CLASS_PRINT ":print:"
+#define CLASS_PUNCT ":punct:"
+#define CLASS_SPACE ":space:"
+#define CLASS_UPPER ":upper:"
+#define CLASS_XDIGIT ":xdigit:"
+
+/*
+ * SPECIFIERS:
+ *
+ *
+ * a  Hex-float
+ * A  Hex-float
+ * c  Character
+ * C  Widechar character (wint_t)
+ * d  Decimal
+ * e  Float
+ * E  Float
+ * F  Float
+ * F  Float
+ * g  Float
+ * G  Float
+ * i  Integer
+ * m  Error message
+ * n  Count
+ * o  Octal
+ * p  Pointer
+ * s  String
+ * S  Widechar string (wchar_t)
+ * u  Unsigned
+ * x  Hex
+ * X  Hex
+ * [  Group
+ *
+ * Reserved:
+ *
+ * D  Binary Coded Decimal %D(length,precision) (OS/390)
+ */
+#define SPECIFIER_CHAR 'c'
+#define SPECIFIER_STRING 's'
+#define SPECIFIER_DECIMAL 'd'
+#define SPECIFIER_INTEGER 'i'
+#define SPECIFIER_UNSIGNED 'u'
+#define SPECIFIER_OCTAL 'o'
+#define SPECIFIER_HEX 'x'
+#define SPECIFIER_HEX_UPPER 'X'
+#define SPECIFIER_FLOAT_E 'e'
+#define SPECIFIER_FLOAT_E_UPPER 'E'
+#define SPECIFIER_FLOAT_F 'f'
+#define SPECIFIER_FLOAT_F_UPPER 'F'
+#define SPECIFIER_FLOAT_G 'g'
+#define SPECIFIER_FLOAT_G_UPPER 'G'
+#define SPECIFIER_POINTER 'p'
+#define SPECIFIER_GROUP '['
+#define SPECIFIER_UNGROUP ']'
+#define SPECIFIER_COUNT 'n'
+#if defined(TRIO_UNIX98)
+# define SPECIFIER_CHAR_UPPER 'C'
+# define SPECIFIER_STRING_UPPER 'S'
+#endif
+#if defined(TRIO_C99)
+# define SPECIFIER_HEXFLOAT 'a'
+# define SPECIFIER_HEXFLOAT_UPPER 'A'
+#endif
+#if defined(TRIO_GNU)
+# define SPECIFIER_ERRNO 'm'
+#endif
+#if defined(TRIO_EXTENSION)
+# define SPECIFIER_BINARY 'b'
+# define SPECIFIER_BINARY_UPPER 'B'
+#endif
+
+/*
+ * QUALIFIERS:
+ *
+ *
+ * Numbers = d,i,o,u,x,X
+ * Float = a,A,e,E,f,F,g,G
+ * String = s
+ * Char = c
+ *
+ *
+ * 9$ Position
+ *      Use the 9th parameter. 9 can be any number between 1 and
+ *      the maximal argument
+ *
+ * 9 Width
+ *      Set width to 9. 9 can be any number, but must not be postfixed
+ *      by '$'
+ *
+ * h  Short
+ *    Numbers:
+ *      (unsigned) short int
+ *
+ * hh Short short
+ *    Numbers:
+ *      (unsigned) char
+ *
+ * l  Long
+ *    Numbers:
+ *      (unsigned) long int
+ *    String:
+ *      as the S specifier
+ *    Char:
+ *      as the C specifier
+ *
+ * ll Long Long
+ *    Numbers:
+ *      (unsigned) long long int
+ *
+ * L  Long Double
+ *    Float
+ *      long double
+ *
+ * #  Alternative
+ *    Float:
+ *      Decimal-point is always present
+ *    String:
+ *      non-printable characters are handled as \number
+ *
+ *    Spacing
+ *
+ * +  Sign
+ *
+ * -  Alignment
+ *
+ * .  Precision
+ *
+ * *  Parameter
+ *    print: use parameter
+ *    scan: no parameter (ignore)
+ *
+ * q  Quad
+ *
+ * Z  size_t
+ *
+ * w  Widechar
+ *
+ * '  Thousands/quote
+ *    Numbers:
+ *      Integer part grouped in thousands
+ *    Binary numbers:
+ *      Number grouped in nibbles (4 bits)
+ *    String:
+ *      Quoted string
+ *
+ * j  intmax_t
+ * t  prtdiff_t
+ * z  size_t
+ *
+ * !  Sticky
+ * @  Parameter (for both print and scan)
+ *
+ * Extensions:
+ * NB: Some of these have been deprecated.
+ * <alloc>    = GNU 'a' qualifier
+ * <base=n>   = sets base to 'n' (int)
+ * <fill=c>   = fill with 'c' (char)
+ * <quote>    = quote string
+ */
+#define QUALIFIER_POSITION '$'
+#define QUALIFIER_SHORT 'h'
+#define QUALIFIER_LONG 'l'
+#define QUALIFIER_LONG_UPPER 'L'
+#define QUALIFIER_ALTERNATIVE '#'
+#define QUALIFIER_SPACE ' '
+#define QUALIFIER_PLUS '+'
+#define QUALIFIER_MINUS '-'
+#define QUALIFIER_DOT '.'
+#define QUALIFIER_STAR '*'
+#define QUALIFIER_CIRCUMFLEX '^'
+#if defined(TRIO_C99)
+# define QUALIFIER_SIZE_T 'z'
+# define QUALIFIER_PTRDIFF_T 't'
+# define QUALIFIER_INTMAX_T 'j'
+#endif
+#if defined(TRIO_BSD) || defined(TRIO_GNU)
+# define QUALIFIER_QUAD 'q'
+#endif
+#if defined(TRIO_GNU)
+# define QUALIFIER_SIZE_T_UPPER 'Z'
+#endif
+#if defined(TRIO_MISC)
+# define QUALIFIER_WIDECHAR 'w'
+#endif
+#if defined(TRIO_EXTENSION)
+# define QUALIFIER_QUOTE '\''
+# define QUALIFIER_STICKY '!'
+# define QUALIFIER_VARSIZE '&' /* This should remain undocumented */
+# define QUALIFIER_PARAM '@' /* Experimental */
+# define QUALIFIER_COLON ':' /* For scanlists */
+# define QUALIFIER_EXTENSIONBEGIN '<'
+# define QUALIFIER_EXTENSIONEND '>'
+# define QUALIFIER_EXTENSIONSEPARATOR ','
+# define QUALIFIER_EXTENSIONVALUE '='
+#endif
+
+/* Internal structure for parameters */
+typedef struct {
+  int type;
+  int flags;
+  int width;
+  size_t precision;
+  int base;
+  int varsize;
+  int indexAfterSpecifier;
+  union {
+    char *string;
+    void *pointer;
+    union {
+      SLONGEST asSigned;
+      LONGEST asUnsigned;
+    } number;
+    double doubleNumber;
+    double *doublePointer;
+    long double longdoubleNumber;
+    long double *longdoublePointer;
+    int errorNumber;
+  } data;
+} parameter_T;
+
+/* Internal structure */
+typedef struct _trio_T {
+  void *location;
+  void (*OutStream)(struct _trio_T *, int);
+  void (*InStream)(struct _trio_T *, int *);
+  /* The number of characters that would have been written/read if
+   * there had been sufficient space.
+   */
+  size_t processed;
+  /* The number of characters that are actually written/read.
+   * Processed and committed with only differ for the *nprintf
+   * and *nscanf functions.
+   */
+  size_t committed;
+  size_t max;
+  unsigned int current;
+} trio_T;
+
+
+/*************************************************************************
+ * Package scope variables
+ */
+
+#if defined(PLATFORM_UNIX)
+extern int errno;
+#endif
+
+#if defined(USE_LOCALE)
+static struct lconv *globalLocaleValues = NULL;
+#endif
+/* UNIX98 says "in a locale where the radix character is not defined,
+ * the radix character defaults to a period (.)"
+ */
+static char globalDecimalPoint[MAX_LOCALE_SEPARATOR_LENGTH] = ".";
+static char globalThousandSeparator[MAX_LOCALE_SEPARATOR_LENGTH] = ",";
+static char globalGrouping[MAX_LOCALE_GROUPS] = { (char)NO_GROUPING };
+
+static const char globalDigitsLower[] = "0123456789abcdefghijklmnopqrstuvwxyz";
+static const char globalDigitsUpper[] = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+static BOOLEAN_T globalDigitsUnconverted = TRUE;
+static int globalDigitArray[128];
+
+static const char null[] = "(nil)";
+
+static const char extensionFill[] = "fill";
+static const size_t extensionFillSize = sizeof(extensionFill) - 1;
+static const char extensionAlloc[] = "alloc";
+static const size_t extensionAllocSize = sizeof(extensionAlloc) - 1;
+static const char extensionBase[] = "base";
+static const size_t extensionBaseSize = sizeof(extensionBase) - 1;
+static const char extensionQuote[] = "quote";
+static const size_t extensionQuoteSize = sizeof(extensionQuote) - 1;
+
+
+/*************************************************************************
+ * TrioIsQualifier [private]
+ *
+ * Description:
+ *  Remember to add all new qualifiers to this function.
+ *  QUALIFIER_POSITION must not be added.
+ */
+static BOOLEAN_T
+TrioIsQualifier(const char ch)
+{
+  /* QUALIFIER_POSITION is not included */
+  switch (ch)
+    {
+    case '0': case '1': case '2': case '3': case '4':
+    case '5': case '6': case '7': case '8': case '9':
+    case QUALIFIER_PLUS:
+    case QUALIFIER_MINUS:
+    case QUALIFIER_SPACE:
+    case QUALIFIER_DOT:
+    case QUALIFIER_STAR:
+    case QUALIFIER_ALTERNATIVE:
+    case QUALIFIER_SHORT:
+    case QUALIFIER_LONG:
+    case QUALIFIER_LONG_UPPER:
+    case QUALIFIER_CIRCUMFLEX:
+#if defined(QUALIFIER_SIZE_T)
+    case QUALIFIER_SIZE_T:
+#endif
+#if defined(QUALIFIER_PTRDIFF_T)
+    case QUALIFIER_PTRDIFF_T:
+#endif
+#if defined(QUALIFIER_INTMAX_T)
+    case QUALIFIER_INTMAX_T:
+#endif
+#if defined(QUALIFIER_QUAD)
+    case QUALIFIER_QUAD:
+#endif
+#if defined(QUALIFIER_SIZE_T_UPPER)
+    case QUALIFIER_SIZE_T_UPPER:
+#endif
+#if defined(QUALIFIER_WIDECHAR)
+    case QUALIFIER_WIDECHAR:
+#endif
+#if defined(QUALIFIER_EXTENSIONBEGIN)
+    case QUALIFIER_EXTENSIONBEGIN:
+#endif
+#if defined(QUALIFIER_QUOTE)
+    case QUALIFIER_QUOTE:
+#endif
+#if defined(QUALIFIER_STICKY)
+    case QUALIFIER_STICKY:
+#endif
+#if defined(QUALIFIER_VARSIZE)
+    case QUALIFIER_VARSIZE:
+#endif
+#if defined(QUALIFIER_PARAM)
+    case QUALIFIER_PARAM:
+#endif
+      return TRUE;
+    default:
+      return FALSE;
+    }
+}
+
+/*************************************************************************
+ * TrioSetLocale [private]
+ */
+static void
+TrioSetLocale()
+{
+#if defined(USE_LOCALE)
+  globalLocaleValues = (struct lconv *)localeconv();
+  if (StrLength(globalLocaleValues->decimal_point) > 0)
+    {
+      StrCopyMax(globalDecimalPoint,
+		 sizeof(globalDecimalPoint),
+		 globalLocaleValues->decimal_point);
+    }
+  if (StrLength(globalLocaleValues->thousands_sep) > 0)
+    {
+      StrCopyMax(globalThousandSeparator,
+		 sizeof(globalThousandSeparator),
+		 globalLocaleValues->thousands_sep);
+    }
+  if (StrLength(globalLocaleValues->grouping) > 0)
+    {
+      StrCopyMax(globalGrouping,
+		 sizeof(globalGrouping),
+		 globalLocaleValues->grouping);
+    }
+#endif
+}
+
+/*************************************************************************
+ * TrioGetPosition [private]
+ *
+ * Get the %n$ position.
+ */
+static int
+TrioGetPosition(const char *format, int *indexPointer)
+{
+  char *tmpformat;
+  int number = 0;
+  int index = *indexPointer;
+
+  number = (int)StrToLong(&format[index], &tmpformat, BASE_DECIMAL);
+  index = (int)(tmpformat - format);
+  if ((number != 0) && (QUALIFIER_POSITION == format[index++]))
+    {
+      *indexPointer = index;
+      /* number is decreased by 1, because n$ starts from 1, whereas
+       * the array it is indexing starts from 0.
+       */
+      return number - 1;
+    }
+  return NO_POSITION;
+}
+
+/*************************************************************************
+ * TrioPreprocess [private]
+ *
+ * Description:
+ *  Parse the format string
+ */
+static int
+TrioPreprocess(int type,
+	       const char *format,
+	       parameter_T *parameters,
+	       va_list arglist)
+{
+#if defined(TRIO_ERRORS)
+  /* Count the number of times a parameter is referenced */
+  unsigned short usedEntries[MAX_PARAMETERS];
+#endif
+  /* Parameter counters */
+  int parameterPosition;
+  int currentParam;
+  int maxParam = -1;
+  BOOLEAN_T insideExtension;  /* Are we inside an <> extension? */
+  /* Utility variables */
+  int flags;
+  int width;
+  int precision;
+  int varsize;
+  int base;
+  int index;  /* Index into formatting string */
+  int dots;  /* Count number of dots in modifier part */
+  BOOLEAN_T positional;  /* Does the specifier have a positional? */
+  BOOLEAN_T got_sticky = FALSE;  /* Are there any sticky modifiers at all? */
+  /* indices specifies the order in which the parameters must be
+   * read from the va_args (this is necessary to handle positionals)
+   */
+  int indices[MAX_PARAMETERS];
+  int pos = 0;
+  /* Various variables */
+  char ch;
+  int charlen;
+  int i = -1;
+  int num;
+  int work;
+  char *tmpformat;
+
+
+#if defined(TRIO_ERRORS)
+  /* The 'parameters' array is not initialized, but we need to
+   * know which entries we have used.
+   */
+  memset(usedEntries, 0, sizeof(usedEntries));
+#endif
+
+  index = 0;
+  parameterPosition = 0;
+#if defined(USE_MULTIBYTE)
+  mblen(NULL, 0);
+#endif
+  
+  while (format[index])
+    {
+#if defined(USE_MULTIBYTE)
+      if (! isascii(format[index]))
+	{
+	  /* Multibyte characters cannot be legal specifiers or
+	   * modifiers, so we skip over them.
+	   */
+	  charlen = mblen(&format[index], MB_LEN_MAX);
+	  index += (charlen > 0) ? charlen : 1;
+	  continue; /* while */
+	}
+#endif
+      if (CHAR_IDENTIFIER == format[index++])
+	{
+	  if (CHAR_IDENTIFIER == format[index])
+	    {
+	      index++;
+	      continue; /* while */
+	    }
+
+	  flags = FLAGS_NEW;
+	  insideExtension = FALSE;
+	  dots = 0;
+	  currentParam = TrioGetPosition(format, &index);
+	  positional = (NO_POSITION != currentParam);
+	  if (!positional)
+	    {
+	      /* We have no positional, get the next counter */
+	      currentParam = parameterPosition;
+	    }
+          if(currentParam >= MAX_PARAMETERS)
+	    {
+	      /* Bail out completely to make the error more obvious */
+	      return TRIO_ERROR_RETURN(TRIO_ETOOMANY, index);
+	    }
+
+	  if (currentParam > maxParam)
+	    maxParam = currentParam;
+
+	  /* Default values */
+	  width = NO_WIDTH;
+	  precision = NO_PRECISION;
+	  base = NO_BASE;
+	  varsize = NO_SIZE;
+
+	  while (TrioIsQualifier(format[index])
+		 || insideExtension)
+	    {
+	      ch = format[index++];
+
+#if defined(TRIO_EXTENSION)
+	      if (insideExtension)
+		{
+		  if (QUALIFIER_EXTENSIONSEPARATOR == ch)
+		    {
+		      ch = QUALIFIER_EXTENSIONBEGIN;
+		    }
+		  else
+		    {
+		      insideExtension = FALSE;
+		    }
+		}
+	      if (QUALIFIER_EXTENSIONBEGIN == ch)
+		{
+		  /* Parse extended format */
+		  insideExtension = TRUE;
+		  work = index;
+
+		  switch (format[work])
+		    {
+		    case 'a':
+		      /* <alloc> */
+		      if (StrEqualMax(extensionAlloc, extensionAllocSize,
+				      &format[work]))
+			{
+			  flags |= FLAGS_ALLOC;
+			  work += extensionAllocSize;
+			}
+		      break;
+
+		    case 'b':
+		      /* <base=c> */
+		      if (StrEqualMax(extensionBase, extensionBaseSize,
+				      &format[work]))
+			{
+			  work += extensionBaseSize;
+			  if (QUALIFIER_EXTENSIONVALUE == format[work])
+			    {
+			      work++;
+			      base = StrToLong(&format[work], &tmpformat, BASE_DECIMAL);
+			      work += (int)(tmpformat - &format[work]);
+			      if ((base < MIN_BASE) || (base > MAX_BASE))
+				return TRIO_ERROR_RETURN(TRIO_EINVAL, index);
+			    }
+			}
+		      break;
+
+#if 0
+		      /* Deprecated */
+		    case 'f':
+		      if (StrEqualMax(extensionFill, extensionFillSize,
+				      &format[work]))
+			{
+			  work += extensionFillSize;
+			  if (QUALIFIER_EXTENSIONVALUE == format[work])
+			    {
+			      work++;
+			      adjust = format[work++];
+			    }
+			}
+#endif
+		    case 'q':
+		      /* <quote> */
+		      if (StrEqualMax(extensionQuote, extensionQuoteSize,
+				      &format[work]))
+			{
+			  flags |= FLAGS_QUOTE;
+			  work += extensionQuoteSize;
+#if 0
+			  /* Deprecated */
+			  if (QUALIFIER_EXTENSIONVALUE == format[work])
+			    {
+			      work++;
+			      quote = format[work++];
+			    }
+#endif
+			}
+		      break;
+
+		    default:
+		      break;
+		    }
+		  
+		  if (QUALIFIER_EXTENSIONEND == work[format])
+		    {
+		      insideExtension = FALSE;
+		      index = ++work;
+		    }
+		}
+#endif /* defined(TRIO_EXTENSION) */
+
+	      switch (ch)
+		{
+#if defined(TRIO_EXTENSION)
+		case QUALIFIER_EXTENSIONBEGIN:
+		case QUALIFIER_EXTENSIONSEPARATOR:
+		  /* Everything is fine, but ignore */
+		  break;
+#endif
+		case QUALIFIER_SPACE:
+		  flags |= FLAGS_SPACE;
+		  break;
+
+		case QUALIFIER_PLUS:
+		  flags |= FLAGS_SHOWSIGN;
+		  break;
+
+		case QUALIFIER_MINUS:
+		  flags |= FLAGS_LEFTADJUST;
+		  flags &= ~FLAGS_NILPADDING;
+		  break;
+
+		case QUALIFIER_ALTERNATIVE:
+		  flags |= FLAGS_ALTERNATIVE;
+		  break;
+
+		case QUALIFIER_DOT:
+		  if (dots == 0) /* Precision */
+		    {
+		      dots++;
+
+		      /* Skip if no precision */
+		      if (QUALIFIER_DOT == format[index])
+			break;
+		      
+		      /* After the first dot we have the precision */
+		      flags |= FLAGS_PRECISION;
+		      if ((QUALIFIER_STAR == format[index]) ||
+			  (QUALIFIER_PARAM == format[index]))
+			{
+			  index++;
+			  flags |= FLAGS_PRECISION_PARAMETER;
+
+			  precision = TrioGetPosition(format, &index);
+			  if (precision == NO_POSITION)
+			    {
+			      parameterPosition++;
+			      if (positional)
+				precision = parameterPosition;
+			      else
+				{
+				  precision = currentParam;
+				  currentParam = precision + 1;
+				}
+			    }
+			  else
+			    {
+			      if (! positional)
+				currentParam = precision + 1;
+			      if (width > maxParam)
+				maxParam = precision;
+			    }
+			  if (currentParam > maxParam)
+			    maxParam = currentParam;
+			}
+		      else
+			{
+			  precision = StrToLong(&format[index], &tmpformat, BASE_DECIMAL);
+			  index = (int)(tmpformat - format);
+			}
+		    }
+		  else if (dots == 1) /* Base */
+		    {
+		      dots++;
+		      
+		      /* After the second dot we have the base */
+		      flags |= FLAGS_BASE;
+		      if ((QUALIFIER_STAR == format[index]) ||
+			  (QUALIFIER_PARAM == format[index]))
+			{
+			  index++;
+			  flags |= FLAGS_BASE_PARAMETER;
+			  base = TrioGetPosition(format, &index);
+			  if (base == NO_POSITION)
+			    {
+			      parameterPosition++;
+			      if (positional)
+				base = parameterPosition;
+			      else
+				{
+				  base = currentParam;
+				  currentParam = base + 1;
+				}
+			    }
+			  else
+			    {
+			      if (! positional)
+				currentParam = base + 1;
+			      if (base > maxParam)
+				maxParam = base;
+			    }
+			  if (currentParam > maxParam)
+			    maxParam = currentParam;
+			}
+		      else
+			{
+			  base = StrToLong(&format[index], &tmpformat, BASE_DECIMAL);
+			  if (base > MAX_BASE)
+			    return TRIO_ERROR_RETURN(TRIO_EINVAL, index);
+			  index = (int)(tmpformat - format);
+			}
+		    }
+		  else
+		    {
+		      return TRIO_ERROR_RETURN(TRIO_EINVAL, index);
+		    }
+		  break; /* QUALIFIER_DOT */
+
+		case QUALIFIER_PARAM:
+		  type = TYPE_PRINT;
+		  /* FALLTHROUGH */
+		case QUALIFIER_STAR:
+		  /* This has different meanings for print and scan */
+		  if (TYPE_PRINT == type)
+		    {
+		      /* Read with from parameter */
+		      flags |= (FLAGS_WIDTH | FLAGS_WIDTH_PARAMETER);
+		      width = TrioGetPosition(format, &index);
+		      if (width == NO_POSITION)
+			{
+			  parameterPosition++;
+			  if (positional)
+			    width = parameterPosition;
+			  else
+			    {
+			      width = currentParam;
+			      currentParam = width + 1;
+			    }
+			}
+		      else
+			{
+			  if (! positional)
+			    currentParam = width + 1;
+			  if (width > maxParam)
+			    maxParam = width;
+			}
+		      if (currentParam > maxParam)
+			maxParam = currentParam;
+		    }
+		  else
+		    {
+		      /* Scan, but do not store result */
+		      flags |= FLAGS_IGNORE;
+		    }
+
+		  break; /* QUALIFIER_STAR */
+
+		case '0':
+		  if (! (flags & FLAGS_LEFTADJUST))
+		    flags |= FLAGS_NILPADDING;
+		  /* FALLTHROUGH */
+		case '1': case '2': case '3': case '4':
+		case '5': case '6': case '7': case '8': case '9':
+		  flags |= FLAGS_WIDTH;
+		  /* &format[index - 1] is used to "rewind" the read
+		   * character from format
+		   */
+		  width = StrToLong(&format[index - 1], &tmpformat, BASE_DECIMAL);
+		  index = (int)(tmpformat - format);
+		  break;
+
+		case QUALIFIER_SHORT:
+		  if (flags & FLAGS_SHORTSHORT)
+		    return TRIO_ERROR_RETURN(TRIO_EINVAL, index);
+		  else if (flags & FLAGS_SHORT)
+		    flags |= FLAGS_SHORTSHORT;
+		  else
+		    flags |= FLAGS_SHORT;
+		  break;
+
+		case QUALIFIER_LONG:
+		  if (flags & FLAGS_QUAD)
+		    return TRIO_ERROR_RETURN(TRIO_EINVAL, index);
+		  else if (flags & FLAGS_LONG)
+		    flags |= FLAGS_QUAD;
+		  else
+		    flags |= FLAGS_LONG;
+		  break;
+
+		case QUALIFIER_LONG_UPPER:
+		  flags |= FLAGS_LONGDOUBLE;
+		  break;
+
+#if defined(QUALIFIER_SIZE_T)
+		case QUALIFIER_SIZE_T:
+		  flags |= FLAGS_SIZE_T;
+		  /* Modify flags for later truncation of number */
+		  if (sizeof(size_t) == sizeof(ULONGLONG))
+		    flags |= FLAGS_QUAD;
+		  else if (sizeof(size_t) == sizeof(long))
+		    flags |= FLAGS_LONG;
+		  break;
+#endif
+
+#if defined(QUALIFIER_PTRDIFF_T)
+		case QUALIFIER_PTRDIFF_T:
+		  flags |= FLAGS_PTRDIFF_T;
+		  if (sizeof(ptrdiff_t) == sizeof(ULONGLONG))
+		    flags |= FLAGS_QUAD;
+		  else if (sizeof(ptrdiff_t) == sizeof(long))
+		    flags |= FLAGS_LONG;
+		  break;
+#endif
+
+#if defined(QUALIFIER_INTMAX_T)
+		case QUALIFIER_INTMAX_T:
+		  flags |= FLAGS_INTMAX_T;
+		  if (sizeof(intmax_t) == sizeof(ULONGLONG))
+		    flags |= FLAGS_QUAD;
+		  else if (sizeof(intmax_t) == sizeof(long))
+		    flags |= FLAGS_LONG;
+		  break;
+#endif
+
+#if defined(QUALIFIER_QUAD)
+		case QUALIFIER_QUAD:
+		  flags |= FLAGS_QUAD;
+		  break;
+#endif
+
+#if defined(QUALIFIER_WIDECHAR)
+		case QUALIFIER_WIDECHAR:
+		  flags |= FLAGS_WIDECHAR;
+		  break;
+#endif
+
+#if defined(QUALIFIER_SIZE_T_UPPER)
+		case QUALIFIER_SIZE_T_UPPER:
+		  break;
+#endif
+
+#if defined(QUALIFIER_QUOTE)
+		case QUALIFIER_QUOTE:
+		  flags |= FLAGS_QUOTE;
+		  break;
+#endif
+
+#if defined(QUALIFIER_STICKY)
+		case QUALIFIER_STICKY:
+		  flags |= FLAGS_STICKY;
+		  got_sticky = TRUE;
+		  break;
+#endif
+		  
+#if defined(QUALIFIER_VARSIZE)
+		case QUALIFIER_VARSIZE:
+		  flags |= FLAGS_SIZE_PARAMETER;
+		  parameterPosition++;
+		  if (positional)
+		    varsize = parameterPosition;
+		  else
+		    {
+		      varsize = currentParam;
+		      currentParam = varsize + 1;
+		    }
+		  if (currentParam > maxParam)
+		    maxParam = currentParam;
+		  break;
+#endif
+
+		default:
+		  /* Bail out completely to make the error more obvious */
+                  return TRIO_ERROR_RETURN(TRIO_EINVAL, index);
+		}
+	    } /* while qualifier */
+
+	  /* Parameters only need the type and value. The value is
+	   * read later.
+	   */
+	  if (flags & FLAGS_WIDTH_PARAMETER)
+	    {
+#if defined(TRIO_ERRORS)
+	      usedEntries[width] += 1;
+#endif
+	      parameters[pos].type = FORMAT_PARAMETER;
+	      indices[width] = pos;
+	      width = pos++;
+	    }
+	  if (flags & FLAGS_PRECISION_PARAMETER)
+	    {
+#if defined(TRIO_ERRORS)
+	      usedEntries[precision] += 1;
+#endif
+	      parameters[pos].type = FORMAT_PARAMETER;
+	      indices[precision] = pos;
+	      precision = pos++;
+	    }
+	  if (flags & FLAGS_BASE_PARAMETER)
+	    {
+#if defined(TRIO_ERRORS)
+	      usedEntries[base] += 1;
+#endif
+	      parameters[pos].type = FORMAT_PARAMETER;
+	      indices[base] = pos;
+	      base = pos++;
+	    }
+	  if (flags & FLAGS_SIZE_PARAMETER)
+	    {
+#if defined(TRIO_ERRORS)
+	      usedEntries[varsize] += 1;
+#endif
+	      parameters[pos].type = FORMAT_PARAMETER;
+	      indices[varsize] = pos;
+	      varsize = pos++;
+	    }
+	  
+	  indices[currentParam] = pos;
+	  
+	  switch (format[index++])
+	    {
+#if defined(SPECIFIER_CHAR_UPPER)
+	    case SPECIFIER_CHAR_UPPER:
+	      flags |= FLAGS_LONG;
+	      /* FALLTHROUGH */
+#endif
+	    case SPECIFIER_CHAR:
+	      parameters[pos].type = FORMAT_CHAR;
+	      break;
+
+#if defined(SPECIFIER_STRING_UPPER)
+	    case SPECIFIER_STRING_UPPER:
+	      flags |= FLAGS_LONG;
+	      /* FALLTHROUGH */
+#endif
+	    case SPECIFIER_STRING:
+	      parameters[pos].type = FORMAT_STRING;
+	      break;
+
+	    case SPECIFIER_GROUP:
+	      if (TYPE_SCAN == type)
+		{
+		  parameters[pos].type = FORMAT_GROUP;
+		  while (format[index])
+		    {
+		      if (format[index++] == SPECIFIER_UNGROUP)
+			break; /* while */
+		    }
+		}
+	      break;
+	      
+	    case SPECIFIER_INTEGER:
+	      parameters[pos].type = FORMAT_INT;
+	      break;
+	      
+	    case SPECIFIER_UNSIGNED:
+	      flags |= FLAGS_UNSIGNED;
+	      parameters[pos].type = FORMAT_INT;
+	      break;
+
+	    case SPECIFIER_DECIMAL:
+	      /* Disable base modifier */
+	      flags &= ~FLAGS_BASE_PARAMETER;
+	      base = BASE_DECIMAL;
+	      parameters[pos].type = FORMAT_INT;
+	      break;
+
+	    case SPECIFIER_OCTAL:
+	      flags &= ~FLAGS_BASE_PARAMETER;
+	      base = BASE_OCTAL;
+	      parameters[pos].type = FORMAT_INT;
+	      break;
+
+#if defined(SPECIFIER_BINARY)
+	    case SPECIFIER_BINARY_UPPER:
+	      flags |= FLAGS_UPPER;
+	      /* FALLTHROUGH */
+	    case SPECIFIER_BINARY:
+	      flags |= FLAGS_NILPADDING;
+	      flags &= ~FLAGS_BASE_PARAMETER;
+	      base = BASE_BINARY;
+	      parameters[pos].type = FORMAT_INT;
+	      break;
+#endif
+
+	    case SPECIFIER_HEX_UPPER:
+	      flags |= FLAGS_UPPER;
+	      /* FALLTHROUGH */
+	    case SPECIFIER_HEX:
+	      flags |= FLAGS_UNSIGNED;
+	      flags &= ~FLAGS_BASE_PARAMETER;
+	      base = BASE_HEX;
+	      parameters[pos].type = FORMAT_INT;
+	      break;
+
+	    case SPECIFIER_FLOAT_E_UPPER:
+	      flags |= FLAGS_UPPER;
+	      /* FALLTHROUGH */
+	    case SPECIFIER_FLOAT_E:
+	      flags |= FLAGS_FLOAT_E;
+	      parameters[pos].type = FORMAT_DOUBLE;
+	      break;
+
+	    case SPECIFIER_FLOAT_G_UPPER:
+	      flags |= FLAGS_UPPER;
+	      /* FALLTHROUGH */
+	    case SPECIFIER_FLOAT_G:
+	      flags |= FLAGS_FLOAT_G;
+	      parameters[pos].type = FORMAT_DOUBLE;
+	      break;
+
+	    case SPECIFIER_FLOAT_F_UPPER:
+	      flags |= FLAGS_UPPER;
+	      /* FALLTHROUGH */
+	    case SPECIFIER_FLOAT_F:
+	      parameters[pos].type = FORMAT_DOUBLE;
+	      break;
+
+	    case SPECIFIER_POINTER:
+	      parameters[pos].type = FORMAT_POINTER;
+	      break;
+
+	    case SPECIFIER_COUNT:
+	      parameters[pos].type = FORMAT_COUNT;
+	      break;
+
+#if defined(SPECIFIER_HEXFLOAT)
+# if defined(SPECIFIER_HEXFLOAT_UPPER)
+	    case SPECIFIER_HEXFLOAT_UPPER:
+	      flags |= FLAGS_UPPER;
+	      /* FALLTHROUGH */
+# endif
+	    case SPECIFIER_HEXFLOAT:
+	      base = BASE_HEX;
+	      parameters[pos].type = FORMAT_DOUBLE;
+	      break;
+#endif
+
+#if defined(FORMAT_ERRNO)
+	    case SPECIFIER_ERRNO:
+	      parameters[pos].type = FORMAT_ERRNO;
+	      break;
+#endif
+
+	    default:
+	      /* Bail out completely to make the error more obvious */
+              return TRIO_ERROR_RETURN(TRIO_EINVAL, index);
+	    }
+
+#if defined(TRIO_ERRORS)
+	  /*  Count the number of times this entry has been used */
+	  usedEntries[currentParam] += 1;
+#endif
+	  
+	  /* Find last sticky parameters */
+	  if (got_sticky && !(flags & FLAGS_STICKY))
+	    {
+	      for (i = pos - 1; i >= 0; i--)
+		{
+		  if (parameters[i].type == FORMAT_PARAMETER)
+		    continue;
+		  if ((parameters[i].flags & FLAGS_STICKY) &&
+		      (parameters[i].type == parameters[pos].type))
+		    {
+		      /* Do not overwrite current qualifiers */
+		      flags |= (parameters[i].flags & ~FLAGS_STICKY);
+		      if (width == NO_WIDTH)
+			width = parameters[i].width;
+		      if (precision == NO_PRECISION)
+			precision = parameters[i].precision;
+		      if (base == NO_BASE)
+			base = parameters[i].base;
+		      break;
+		    }
+		}
+	    }
+	  
+	  parameters[pos].indexAfterSpecifier = index;
+	  parameters[pos].flags = flags;
+	  parameters[pos].width = width;
+	  parameters[pos].precision = precision;
+	  parameters[pos].base = (base == NO_BASE) ? BASE_DECIMAL : base;
+	  parameters[pos].varsize = varsize;
+	  pos++;
+	  
+	  if (!positional)
+	    parameterPosition++;
+	  
+	} /* if identifier */
+      
+    } /* while format characters left */
+
+  for (num = 0; num <= maxParam; num++)
+    {
+#if defined(TRIO_ERRORS)
+      if (usedEntries[num] != 1)
+	{
+	  if (usedEntries[num] == 0) /* gap detected */
+	    return TRIO_ERROR_RETURN(TRIO_EGAP, num);
+	  else /* double references detected */
+	    return TRIO_ERROR_RETURN(TRIO_EDBLREF, num);
+	}
+#endif
+      
+      i = indices[num];
+
+      /* FORMAT_PARAMETERS are only present if they must be read,
+       * so it makes no sense to check the ignore flag (besides,
+       * the flags variable is not set for that particular type)
+       */
+      if ((parameters[i].type != FORMAT_PARAMETER) &&
+	  (parameters[i].flags & FLAGS_IGNORE))
+	continue; /* for all arguments */
+
+      /* The stack arguments are read according to ANSI C89
+       * default argument promotions:
+       *
+       *  char           = int
+       *  short          = int
+       *  unsigned char  = unsigned int
+       *  unsigned short = unsigned int
+       *  float          = double
+       *
+       * In addition to the ANSI C89 these types are read (the
+       * default argument promotions of C99 has not been
+       * considered yet)
+       *
+       *  long long
+       *  long double
+       *  size_t
+       *  ptrdiff_t
+       *  intmax_t
+       */
+      switch (parameters[i].type)
+	{
+	case FORMAT_GROUP:
+	case FORMAT_STRING:
+	  parameters[i].data.string = va_arg(arglist, char *);
+	  break;
+
+	case FORMAT_POINTER:
+	case FORMAT_COUNT:
+	case FORMAT_UNKNOWN:
+	  parameters[i].data.pointer = va_arg(arglist, void *);
+	  break;
+
+	case FORMAT_CHAR:
+	case FORMAT_INT:
+	  if (TYPE_SCAN == type)
+	    {
+	      parameters[i].data.pointer = (LONGEST *)va_arg(arglist, void *);
+	    }
+	  else
+	    {
+#if defined(QUALIFIER_VARSIZE)
+	      if (parameters[i].flags & FLAGS_SIZE_PARAMETER)
+		{
+		  /* Variable sizes are mapped onto the fixed sizes,
+		   * in accordance with integer promotion.
+		   */
+		  parameters[i].flags &= ~FLAGS_ALL_SIZES;
+		  varsize = (int)parameters[parameters[i].varsize].data.number.asUnsigned;
+		  if (varsize <= (int)sizeof(int))
+		    ;
+		  else if (varsize <= (int)sizeof(long))
+		    parameters[i].flags |= FLAGS_LONG;
+#if defined(QUALIFIER_INTMAX_T)
+		  else if (varsize <= (int)sizeof(LONGLONG))
+		    parameters[i].flags |= FLAGS_QUAD;
+		  else
+		    parameters[i].flags |= FLAGS_INTMAX_T;
+#else
+		  else
+		    parameters[i].flags |= FLAGS_QUAD;
+#endif
+		}
+#endif
+#if defined(QUALIFIER_SIZE_T) || defined(QUALIFIER_SIZE_T_UPPER)
+	      if (parameters[i].flags & FLAGS_SIZE_T)
+		parameters[i].data.number.asUnsigned = (LONGEST)va_arg(arglist, size_t);
+	      else
+#endif
+#if defined(QUALIFIER_PTRDIFF_T)
+	      if (parameters[i].flags & FLAGS_PTRDIFF_T)
+		parameters[i].data.number.asUnsigned = (LONGEST)va_arg(arglist, ptrdiff_t);
+	      else
+#endif
+#if defined(QUALIFIER_INTMAX_T)
+	      if (parameters[i].flags & FLAGS_INTMAX_T)
+		parameters[i].data.number.asUnsigned = (LONGEST)va_arg(arglist, intmax_t);
+	      else
+#endif
+	      if (parameters[i].flags & FLAGS_QUAD)
+		parameters[i].data.number.asUnsigned = (LONGEST)va_arg(arglist, ULONGLONG);
+	      else if (parameters[i].flags & FLAGS_LONG)
+		parameters[i].data.number.asUnsigned = (LONGEST)va_arg(arglist, long);
+	      else
+		parameters[i].data.number.asUnsigned = (LONGEST)va_arg(arglist, int);
+	    }
+	  break;
+
+	case FORMAT_PARAMETER:
+	  parameters[i].data.number.asUnsigned = (LONGEST)va_arg(arglist, int);
+	  break;
+
+	case FORMAT_DOUBLE:
+	  if (TYPE_SCAN == type)
+	    {
+	      if (parameters[i].flags & FLAGS_LONG)
+		parameters[i].data.longdoublePointer = va_arg(arglist, long double *);
+	      else
+		parameters[i].data.doublePointer = va_arg(arglist, double *);
+	    }
+	  else
+	    {
+	      if (parameters[i].flags & FLAGS_LONG)
+		parameters[i].data.longdoubleNumber = va_arg(arglist, long double);
+	      else
+		parameters[i].data.longdoubleNumber = (long double)va_arg(arglist, double);
+	    }
+	  break;
+
+#if defined(FORMAT_ERRNO)
+	case FORMAT_ERRNO:
+	  parameters[i].data.errorNumber = errno;
+	  break;
+#endif
+
+	default:
+	  break;
+	}
+    } /* for all specifiers */
+  return num;
+}
+
+
+/*************************************************************************
+ *
+ * FORMATTING
+ *
+ ************************************************************************/
+
+
+/*************************************************************************
+ * TrioWriteNumber [private]
+ *
+ * Description:
+ *  Output a number.
+ *  The complexity of this function is a result of the complexity
+ *  of the dependencies of the flags.
+ */
+static void
+TrioWriteNumber(trio_T *self,
+		LONGEST number,
+		int flags,
+		int width,
+		int precision,
+		int base)
+{
+  BOOLEAN_T isNegative;
+  char buffer[MAX_CHARS_IN(LONGEST)
+	     * MAX_LOCALE_SEPARATOR_LENGTH
+	     * MAX_LOCALE_GROUPS];
+  char *bufferend;
+  char *pointer;
+  const char *digits;
+  int i;
+  int length;
+  char *p;
+  int charsPerThousand;
+  int groupingIndex;
+  int count;
+
+  assert(VALID(self));
+  assert(VALID(self->OutStream));
+  assert((base >= MIN_BASE && base <= MAX_BASE) || (base == NO_BASE));
+
+  digits = (flags & FLAGS_UPPER) ? globalDigitsUpper : globalDigitsLower;
+
+  if (flags & FLAGS_UNSIGNED)
+    isNegative = FALSE;
+  else if ((isNegative = (((SLONGEST)number) < 0)))
+    number = -number;
+
+  if (flags & FLAGS_QUAD)
+    number &= (ULONGLONG)-1;
+  else if (flags & FLAGS_LONG)
+    number &= (unsigned long)-1;
+  else
+    number &= (unsigned int)-1;
+  
+  /* Build number */
+  pointer = bufferend = &buffer[sizeof(buffer) - 1];
+  *pointer-- = NIL;
+  charsPerThousand = (int)globalGrouping[0];
+  groupingIndex = 1;
+  for (i = 1; i < (int)sizeof(buffer); i++)
+    {
+      *pointer-- = digits[number % base];
+      number /= base;
+      if (number == 0)
+	break;
+
+      if ((flags & FLAGS_QUOTE)
+	  && (charsPerThousand != NO_GROUPING)
+	  && (i % charsPerThousand == 0))
+	{
+	  /*
+	   * We are building the number from the least significant
+	   * to the most significant digit, so we have to copy the
+	   * thousand separator backwards
+	   */
+	  length = StrLength(globalThousandSeparator);
+	  if (((int)(pointer - buffer) - length) > 0)
+	    {
+	      p = &globalThousandSeparator[length - 1];
+	      while (length-- > 0)
+		*pointer-- = *p--;
+	    }
+
+	  /* Advance to next grouping number */
+	  switch (globalGrouping[groupingIndex])
+	    {
+	    case CHAR_MAX: /* Disable grouping */
+	      charsPerThousand = NO_GROUPING;
+	      break;
+	    case 0: /* Repeat last group */
+	      break;
+	    default:
+	      charsPerThousand = (int)globalGrouping[groupingIndex++];
+	      break;
+	    }
+	}
+    }
+
+  /* Adjust width */
+  width -= (bufferend - pointer) - 1;
+
+  /* Adjust precision */
+  if (NO_PRECISION != precision)
+    {
+      precision -= (bufferend - pointer) - 1;
+      if (precision < 0)
+	precision = 0;
+      flags |= FLAGS_NILPADDING;
+    }
+
+  /* Adjust width further */
+  if (isNegative || (flags & FLAGS_SHOWSIGN) || (flags & FLAGS_SPACE))
+    width--;
+  if (flags & FLAGS_ALTERNATIVE)
+    {
+      switch (base)
+	{
+	case BASE_BINARY:
+	case BASE_HEX:
+	  width -= 2;
+	  break;
+	case BASE_OCTAL:
+	  width--;
+	  break;
+	default:
+	  break;
+	}
+    }
+
+  /* Output prefixes spaces if needed */
+  if (! ((flags & FLAGS_LEFTADJUST) ||
+	 ((flags & FLAGS_NILPADDING) && (precision == NO_PRECISION))))
+    {
+      count = (precision == NO_PRECISION) ? 0 : precision;
+      while (width-- > count)
+	self->OutStream(self, CHAR_ADJUST);
+    }
+
+  /* width has been adjusted for signs and alternatives */
+  if (isNegative)
+    self->OutStream(self, '-');
+  else if (flags & FLAGS_SHOWSIGN)
+    self->OutStream(self, '+');
+  else if (flags & FLAGS_SPACE)
+    self->OutStream(self, ' ');
+
+  if (flags & FLAGS_ALTERNATIVE)
+    {
+      switch (base)
+	{
+	case BASE_BINARY:
+	  self->OutStream(self, '0');
+	  self->OutStream(self, (flags & FLAGS_UPPER) ? 'B' : 'b');
+	  break;
+
+	case BASE_OCTAL:
+	  self->OutStream(self, '0');
+	  break;
+
+	case BASE_HEX:
+	  self->OutStream(self, '0');
+	  self->OutStream(self, (flags & FLAGS_UPPER) ? 'X' : 'x');
+	  break;
+
+	default:
+	  break;
+	} /* switch base */
+    }
+
+  /* Output prefixed zero padding if needed */
+  if (flags & FLAGS_NILPADDING)
+    {
+      if (precision == NO_PRECISION)
+	precision = width;
+      while (precision-- > 0)
+	{
+	  self->OutStream(self, '0');
+	  width--;
+	}
+    }
+
+  /* Output the number itself */
+  while (*(++pointer))
+    {
+      self->OutStream(self, *pointer);
+    }
+
+  /* Output trailing spaces if needed */
+  if (flags & FLAGS_LEFTADJUST)
+    {
+      while (width-- > 0)
+	self->OutStream(self, CHAR_ADJUST);
+    }
+}
+
+/*************************************************************************
+ * TrioWriteString [private]
+ *
+ * Description:
+ *  Output a string
+ */
+static void
+TrioWriteString(trio_T *self,
+		const char *string,
+		int flags,
+		int width,
+		int precision)
+{
+  int length;
+  int ch;
+
+  assert(VALID(self));
+  assert(VALID(self->OutStream));
+
+  if (string == NULL)
+    {
+      string = null;
+      length = sizeof(null) - 1;
+      /* Disable quoting for the null pointer */
+      flags &= (~FLAGS_QUOTE);
+      width = 0;
+    }
+  else
+    {
+      length = StrLength(string);
+    }
+  if ((NO_PRECISION != precision) &&
+      (precision < length))
+    {
+      length = precision;
+    }
+  width -= length;
+
+  if (flags & FLAGS_QUOTE)
+    self->OutStream(self, CHAR_QUOTE);
+
+  if (! (flags & FLAGS_LEFTADJUST))
+    {
+      while (width-- > 0)
+	self->OutStream(self, CHAR_ADJUST);
+    }
+
+  while (length-- > 0)
+    {
+      /* The ctype parameters must be an unsigned char (or EOF) */
+      ch = (unsigned char)(*string++);
+      if (flags & FLAGS_ALTERNATIVE)
+	{
+	  if (! (isprint(ch) || isspace(ch)))
+	    {
+	      /* Non-printable characters are converted to C escapes or
+	       * \number, if no C escape exists.
+	       */
+	      self->OutStream(self, CHAR_BACKSLASH);
+	      switch (ch)
+		{
+		case '\a': /* alert */
+		  self->OutStream(self, 'a');
+		  break;
+		case '\b': /* backspace */
+		  self->OutStream(self, 'b');
+		  break;
+		case '\f': /* formfeed */
+		  self->OutStream(self, 'f');
+		  break;
+		case '\n': /* newline */
+		  self->OutStream(self, 'n');
+		  break;
+		case '\r': /* carriage return */
+		  self->OutStream(self, 'r');
+		  break;
+		case '\t': /* horizontal tab */
+		  self->OutStream(self, 't');
+		  break;
+		case '\v': /* vertical tab */
+		  self->OutStream(self, 'v');
+		  break;
+		case '\\': /* backslash */
+		  self->OutStream(self, '\\');
+		  break;
+		default: /* the rest */
+		  self->OutStream(self, 'x');
+		  TrioWriteNumber(self, (ULONGLONG)ch,
+				  FLAGS_UNSIGNED | FLAGS_NILPADDING,
+				  2, 2, BASE_HEX);
+		  break;
+		}
+	    }
+	  else if (ch == CHAR_BACKSLASH)
+	    {
+	      self->OutStream(self, CHAR_BACKSLASH);
+	      self->OutStream(self, CHAR_BACKSLASH);
+	    }
+	  else
+	    {
+	      self->OutStream(self, ch);
+	    }
+	}
+      else
+	{
+	  self->OutStream(self, ch);
+	}
+    }
+
+  if (flags & FLAGS_LEFTADJUST)
+    {
+      while (width-- > 0)
+	self->OutStream(self, CHAR_ADJUST);
+    }
+  if (flags & FLAGS_QUOTE)
+    self->OutStream(self, CHAR_QUOTE);
+}
+
+/*************************************************************************
+ * TrioWriteDouble [private]
+ */
+static void
+TrioWriteDouble(trio_T *self,
+		long double longdoubleNumber,
+		int flags,
+		int width,
+		int precision,
+		int base)
+{
+  int charsPerThousand;
+  int length;
+  double number;
+  double precisionPower;
+  double workNumber;
+  int integerDigits;
+  int fractionDigits;
+  int exponentDigits;
+  int visibleDigits;
+  int expectedWidth;
+  int exponent;
+  unsigned int uExponent;
+  double dblBase;
+  BOOLEAN_T isNegative;
+  BOOLEAN_T isExponentNegative = FALSE;
+  BOOLEAN_T isHex;
+  const char *digits;
+  char numberBuffer[MAX_CHARS_IN(double)
+		   * MAX_LOCALE_SEPARATOR_LENGTH
+		   * MAX_LOCALE_GROUPS];
+  char *numberPointer;
+  char exponentBuffer[MAX_CHARS_IN(double)];
+  char *exponentPointer;
+  int groupingIndex;
+  char *work;
+  int i;
+  BOOLEAN_T onlyzero;
+  
+  assert(VALID(self));
+  assert(VALID(self->OutStream));
+  assert(base == BASE_DECIMAL || base == BASE_HEX);
+
+  number = (double)longdoubleNumber;
+  
+#if defined(USE_INFINITE)
+  /* Handle infinite numbers and non-a-number first */
+  switch (IS_INFINITE(number))
+    {
+    case 1:
+      TrioWriteString(self,
+		      (flags & FLAGS_UPPER)
+		      ? INFINITE_UPPER
+		      : INFINITE_LOWER,
+		      flags, width, precision);
+      return;
+
+    case -1:
+      TrioWriteString(self,
+		      (flags & FLAGS_UPPER)
+		      ? "-" INFINITE_UPPER
+		      : "-" INFINITE_LOWER,
+		      flags, width, precision);
+      return;
+
+    default:
+      break;
+    }
+#endif
+#if defined(USE_NAN)
+  if (IS_NAN(number))
+    {
+      TrioWriteString(self,
+		      (flags & FLAGS_UPPER)
+		      ? NAN_UPPER
+		      : NAN_LOWER,
+		      0, 0, 0, 0, 0);
+      return;
+    }
+#endif
+
+  /* Normal numbers */
+  digits = (flags & FLAGS_UPPER) ? globalDigitsUpper : globalDigitsLower;
+  isHex = (base == BASE_HEX);
+  dblBase = (double)base;
+  
+  if (precision == NO_PRECISION)
+    precision = FLT_DIG;
+  precisionPower = pow(10.0, (double)precision);
+  
+  isNegative = (number < 0.0);
+  if (isNegative)
+    number = -number;
+  
+  if ((flags & FLAGS_FLOAT_G) || isHex)
+    {
+      if ((number < 1.0e-4) || (number > precisionPower))
+	flags |= FLAGS_FLOAT_E;
+#if defined(TRIO_UNIX98)
+      if (precision == 0)
+	precision = 1;
+#endif
+    }
+
+  if (flags & FLAGS_FLOAT_E)
+    {
+      /* Scale the number */
+      workNumber = log10(number);
+      if (workNumber == -HUGE_VAL)
+	{
+	  exponent = 0;
+	  /* Undo setting */
+	  if (flags & FLAGS_FLOAT_G)
+	    flags &= ~FLAGS_FLOAT_E;
+	}
+      else
+	{
+	  exponent = (int)floor(workNumber);
+	  number /= pow(10.0, (double)exponent);
+	  isExponentNegative = (exponent < 0);
+	  uExponent = (isExponentNegative) ? -exponent : exponent;
+	  /* No thousand separators */
+	  flags &= ~FLAGS_QUOTE;
+	}
+    }
+
+  /*
+   * Truncated number.
+   *
+   * precision is number of significant digits for FLOAT_G
+   * and number of fractional digits for others
+   */
+  integerDigits = (number > DBL_EPSILON)
+    ? 1 + (int)log10(floor(number))
+    : 1;
+  fractionDigits = (flags & FLAGS_FLOAT_G)
+    ? precision - integerDigits
+    : precision;
+  number = floor(0.5 + number * pow(10.0, (double)fractionDigits));
+  if ((int)log10(number) + 1 > integerDigits + fractionDigits)
+    {
+      /* Adjust if number was rounded up one digit (ie. 99 to 100) */
+      integerDigits++;
+    }
+  visibleDigits = integerDigits + fractionDigits;
+  
+  /* Build the fraction part */
+  numberPointer = &numberBuffer[sizeof(numberBuffer) - 1];
+  *numberPointer = NIL;
+  onlyzero = TRUE;
+  for (i = 0; i < fractionDigits; i++)
+    {
+      *(--numberPointer) = digits[(int)fmod(number, dblBase)];
+      number = floor(number / dblBase);
+      
+      /* Prune trailing zeroes */
+      if (numberPointer[0] != digits[0])
+	onlyzero = FALSE;
+      else if (onlyzero && (numberPointer[0] == digits[0]))
+	numberPointer++;
+    }
+  
+  /* Insert decimal point */
+  if ((flags & FLAGS_ALTERNATIVE) || ((fractionDigits > 0) && !onlyzero))
+    {
+      i = StrLength(globalDecimalPoint);
+      while (i> 0)
+	{
+	  *(--numberPointer) = globalDecimalPoint[--i];
+	}
+    }
+  /* Insert the integer part and thousand separators */
+  charsPerThousand = (int)globalGrouping[0];
+  groupingIndex = 1;
+  for (i = 1; i < integerDigits + 1; i++)
+    {
+      *(--numberPointer) = digits[(int)fmod(number, dblBase)];
+      number = floor(number / dblBase);
+      if (number < DBL_EPSILON)
+	break;
+
+      if ((i > 0)
+	  && ((flags & (FLAGS_FLOAT_E | FLAGS_QUOTE)) == FLAGS_QUOTE)
+	  && (charsPerThousand != NO_GROUPING)
+	  && (i % charsPerThousand == 0))
+	{
+	  /*
+	   * We are building the number from the least significant
+	   * to the most significant digit, so we have to copy the
+	   * thousand separator backwards
+	   */
+	  length = StrLength(globalThousandSeparator);
+	  integerDigits += length;
+	  if (((int)(numberPointer - numberBuffer) - length) > 0)
+	    {
+	      work = &globalThousandSeparator[length - 1];
+	      while (length-- > 0)
+		*(--numberPointer) = *work--;
+	    }
+
+	  /* Advance to next grouping number */
+	  if (charsPerThousand != NO_GROUPING)
+	    {
+	      switch (globalGrouping[groupingIndex])
+		{
+		case CHAR_MAX: /* Disable grouping */
+		  charsPerThousand = NO_GROUPING;
+		  break;
+		case 0: /* Repeat last group */
+		  break;
+		default:
+		  charsPerThousand = (int)globalGrouping[groupingIndex++];
+		  break;
+		}
+	    }
+	}
+    }
+  
+  /* Build the exponent */
+  exponentDigits = 0;
+  if (flags & FLAGS_FLOAT_E)
+    {
+      exponentPointer = &exponentBuffer[sizeof(exponentBuffer) - 1];
+      *exponentPointer-- = NIL;
+      do {
+	*exponentPointer-- = digits[uExponent % base];
+	uExponent /= base;
+	exponentDigits++;
+      } while (uExponent);
+    }
+
+  /* Calculate expected width.
+   *  sign + integer part + thousands separators + decimal point
+   *  + fraction + exponent
+   */
+  expectedWidth = StrLength(numberPointer);
+  if (isNegative || (flags & FLAGS_SHOWSIGN))
+    expectedWidth += sizeof("-") - 1;
+  if (exponentDigits > 0)
+    expectedWidth += exponentDigits + sizeof("E+") - 1;
+  if (isExponentNegative)
+    expectedWidth += sizeof('-') - 1;
+  if (isHex)
+    expectedWidth += sizeof("0X") - 1;
+  
+  /* Output prefixing */
+  if (flags & FLAGS_NILPADDING)
+    {
+      /* Leading zeros must be after sign */
+      if (isNegative)
+	self->OutStream(self, '-');
+      else if (flags & FLAGS_SHOWSIGN)
+	self->OutStream(self, '+');
+      if (isHex)
+	{
+	  self->OutStream(self, '0');
+	  self->OutStream(self, (flags & FLAGS_UPPER) ? 'X' : 'x');
+	}
+      if (!(flags & FLAGS_LEFTADJUST))
+	{
+	  for (i = expectedWidth; i < width; i++)
+	    {
+	      self->OutStream(self, '0');
+	    }
+	}
+    }
+  else
+    {
+      /* Leading spaces must be before sign */
+      if (!(flags & FLAGS_LEFTADJUST))
+	{
+	  for (i = expectedWidth; i < width; i++)
+	    {
+	      self->OutStream(self, CHAR_ADJUST);
+	    }
+	}
+      if (isNegative)
+	self->OutStream(self, '-');
+      else if (flags & FLAGS_SHOWSIGN)
+	self->OutStream(self, '+');
+      if (isHex)
+	{
+	  self->OutStream(self, '0');
+	  self->OutStream(self, (flags & FLAGS_UPPER) ? 'X' : 'x');
+	}
+    }
+  /* Output number */
+  for (i = 0; numberPointer[i]; i++)
+    {
+      self->OutStream(self, numberPointer[i]);
+    }
+  /* Output exponent */
+  if (exponentDigits > 0)
+    {
+      self->OutStream(self,
+		      isHex
+		      ? ((flags & FLAGS_UPPER) ? 'P' : 'p')
+		      : ((flags & FLAGS_UPPER) ? 'E' : 'e'));
+      self->OutStream(self, (isExponentNegative) ? '-' : '+');
+      for (i = 0; i < exponentDigits; i++)
+	{
+	  self->OutStream(self, exponentPointer[i + 1]);
+	}
+    }
+  /* Output trailing spaces */
+  if (flags & FLAGS_LEFTADJUST)
+    {
+      for (i = expectedWidth; i < width; i++)
+	{
+	  self->OutStream(self, CHAR_ADJUST);
+	}
+    }
+}
+
+/*************************************************************************
+ * TrioFormat [private]
+ *
+ * Description:
+ *  This is the main engine for formatting output
+ */
+static int
+TrioFormat(void *destination,
+	   size_t destinationSize,
+	   void (*OutStream)(trio_T *, int),
+	   const char *format,
+	   va_list args)
+{
+#if defined(USE_MULTIBYTE)
+  int charlen;
+#endif
+  int status;
+  parameter_T parameters[MAX_PARAMETERS];
+  trio_T internalData;
+  trio_T *data;
+  int i;
+  const char *string;
+  void *pointer;
+  int flags;
+  int width;
+  int precision;
+  int base;
+  int index;
+  ULONGLONG number;
+
+  assert(VALID(OutStream));
+  assert(VALID(format));
+  assert(VALID(args));
+
+  /* memset(&parameters, 0, sizeof(parameters)); */
+  memset(&internalData, 0, sizeof(internalData));
+  data = &internalData;
+  data->OutStream = OutStream;
+  data->location = destination;
+  data->max = destinationSize;
+
+#if defined(USE_LOCALE)
+  if (NULL == globalLocaleValues)
+    {
+      TrioSetLocale();
+    }
+#endif
+
+  status = TrioPreprocess(TYPE_PRINT, format, parameters, args);
+  if (status < 0)
+    return status;
+
+  index = 0;
+  i = 0;
+#if defined(USE_MULTIBYTE)
+  mblen(NULL, 0);
+#endif
+  
+  while (format[index])
+    {
+#if defined(USE_MULTIBYTE)
+      if (! isascii(format[index]))
+	{
+	  charlen = mblen(&format[index], MB_LEN_MAX);
+	  while (charlen-- > 0)
+	    {
+	      OutStream(data, format[index++]);
+	    }
+	  continue; /* while */
+	}
+#endif
+      if (CHAR_IDENTIFIER == format[index])
+	{
+	  if (CHAR_IDENTIFIER == format[index + 1])
+	    {
+	      OutStream(data, CHAR_IDENTIFIER);
+	      index += 2;
+	    }
+	  else
+	    {
+	      /* Skip the parameter entries */
+	      while (parameters[i].type == FORMAT_PARAMETER)
+		i++;
+	      
+	      flags = parameters[i].flags;
+
+	      /* Find width */
+	      width = parameters[i].width;
+	      if (flags & FLAGS_WIDTH_PARAMETER)
+		{
+		  /* Get width from parameter list */
+		  width = (int)parameters[width].data.number.asSigned;
+		}
+	      
+	      /* Find precision */
+	      if (flags & FLAGS_PRECISION)
+		{
+		  precision = parameters[i].precision;
+		  if (flags & FLAGS_PRECISION_PARAMETER)
+		    {
+		      /* Get precision from parameter list */
+		      precision = (int)parameters[precision].data.number.asSigned;
+		    }
+		}
+	      else
+		{
+		  precision = NO_PRECISION;
+		}
+
+	      /* Find base */
+	      base = parameters[i].base;
+	      if (flags & FLAGS_BASE_PARAMETER)
+		{
+		  /* Get base from parameter list */
+		  base = (int)parameters[base].data.number.asSigned;
+		}
+	      
+	      switch (parameters[i].type)
+		{
+		case FORMAT_CHAR:
+		  if (flags & FLAGS_QUOTE)
+		    OutStream(data, CHAR_QUOTE);
+		  if (! (flags & FLAGS_LEFTADJUST))
+		    {
+		      while (--width > 0)
+			OutStream(data, CHAR_ADJUST);
+		    }
+
+		  OutStream(data, (char)parameters[i].data.number.asSigned);
+
+		  if (flags & FLAGS_LEFTADJUST)
+		    {
+		      while(--width > 0)
+			OutStream(data, CHAR_ADJUST);
+		    }
+		  if (flags & FLAGS_QUOTE)
+		    OutStream(data, CHAR_QUOTE);
+
+		  break; /* FORMAT_CHAR */
+
+		case FORMAT_INT:
+		  if (base == NO_BASE)
+		    base = BASE_DECIMAL;
+
+		  TrioWriteNumber(data,
+				  parameters[i].data.number.asUnsigned,
+				  flags,
+				  width,
+				  precision,
+				  base);
+
+		  break; /* FORMAT_INT */
+
+		case FORMAT_DOUBLE:
+		  TrioWriteDouble(data,
+				  parameters[i].data.longdoubleNumber,
+				  flags,
+				  width,
+				  precision,
+				  base);
+		  break; /* FORMAT_DOUBLE */
+
+		case FORMAT_STRING:
+		  TrioWriteString(data,
+				  parameters[i].data.string,
+				  flags,
+				  width,
+				  precision);
+		  break; /* FORMAT_STRING */
+
+		case FORMAT_POINTER:
+		  pointer = parameters[i].data.pointer;
+		  if (NULL == pointer)
+		    {
+		      string = null;
+		      while (*string)
+			OutStream(data, *string++);
+		    }
+		  else
+		    {
+		      /* The subtraction of the null pointer is a workaround
+		       * to avoid a compiler warning. The performance overhead
+		       * is negligible (and likely to be removed by an
+		       * optimising compiler). The (char *) casting is done
+		       * to please ANSI C++.
+		       */
+		      number = (ULONGLONG)((char *)parameters[i].data.pointer
+					   - (char *)0);
+		      /* Shrink to size of pointer */
+		      number &= (ULONGLONG)-1;
+		      flags |= (FLAGS_UNSIGNED | FLAGS_ALTERNATIVE |
+				FLAGS_NILPADDING);
+		      TrioWriteNumber(data,
+				      number,
+				      flags,
+				      POINTER_WIDTH,
+				      precision,
+				      BASE_HEX);
+		    }
+		  break; /* FORMAT_POINTER */
+
+		case FORMAT_COUNT:
+		  pointer = parameters[i].data.pointer;
+		  if (NULL != pointer)
+		    {
+		      /* C99 paragraph 7.19.6.1.8 says "the number of
+		       * characters written to the output stream so far by
+		       * this call", which is data->committed
+		       */
+#if defined(QUALIFIER_SIZE_T) || defined(QUALIFIER_SIZE_T_UPPER)
+		      if (flags & FLAGS_SIZE_T)
+			*(size_t *)pointer = (size_t)data->committed;
+		      else
+#endif
+#if defined(QUALIFIER_PTRDIFF_T)
+		      if (flags & FLAGS_PTRDIFF_T)
+			*(ptrdiff_t *)pointer = (ptrdiff_t)data->committed;
+		      else
+#endif
+#if defined(QUALIFIER_INTMAX_T)
+		      if (flags & FLAGS_INTMAX_T)
+			*(intmax_t *)pointer = (intmax_t)data->committed;
+		      else
+#endif
+		      if (flags & FLAGS_QUAD)
+			{
+			  *(ULONGLONG int *)pointer = (ULONGLONG)data->committed;
+			}
+		      else if (flags & FLAGS_LONG)
+			{
+			  *(long int *)pointer = (long int)data->committed;
+			}
+		      else if (flags & FLAGS_SHORT)
+			{
+			  *(short int *)pointer = (short int)data->committed;
+			}
+		      else
+			{
+			  *(int *)pointer = (int)data->committed;
+			}
+		    }
+		  break; /* FORMAT_COUNT */
+
+		case FORMAT_PARAMETER:
+		  break; /* FORMAT_PARAMETER */
+
+#if defined(FORMAT_ERRNO)
+		case FORMAT_ERRNO:
+		  string = StrError(parameters[i].data.errorNumber);
+		  if (string)
+		    {
+		      TrioWriteString(data,
+				      string,
+				      flags,
+				      width,
+				      precision);
+		    }
+		  else
+		    {
+		      OutStream(data, '#');
+		      TrioWriteNumber(data,
+				      (LONGEST)parameters[i].data.errorNumber,
+				      flags,
+				      width,
+				      precision,
+				      BASE_DECIMAL);
+		    }
+		  break; /* FORMAT_ERRNO */
+#endif
+
+		default:
+		  break;
+		} /* switch parameter type */
+
+	      /* Prepare for next */
+	      index = parameters[i].indexAfterSpecifier;
+	      i++;
+	    }
+	}
+      else /* not identifier */
+	{
+	  OutStream(data, format[index++]);
+	}
+    }
+
+  return data->processed;
+}
+
+/*************************************************************************
+ * TrioOutStreamFile [private]
+ */
+static void
+TrioOutStreamFile(trio_T *self, int output)
+{
+  FILE *file = (FILE *)self->location;
+
+  assert(VALID(self));
+  assert(VALID(file));
+
+  self->processed++;
+  self->committed++;
+  (void)fputc(output, file);
+}
+
+/*************************************************************************
+ * TrioOutStreamFileDescriptor [private]
+ */
+static void
+TrioOutStreamFileDescriptor(trio_T *self, int output)
+{
+  int fd = *((int *)self->location);
+  char ch;
+
+  assert(VALID(self));
+
+  ch = (char)output;
+  (void)write(fd, &ch, sizeof(char));
+  self->processed++;
+  self->committed++;
+}
+
+/*************************************************************************
+ * TrioOutStreamString [private]
+ */
+static void
+TrioOutStreamString(trio_T *self, int output)
+{
+  char **buffer = (char **)self->location;
+
+  assert(VALID(self));
+  assert(VALID(buffer));
+
+  **buffer = (char)output;
+  (*buffer)++;
+  self->processed++;
+  self->committed++;
+}
+
+/*************************************************************************
+ * TrioOutStreamStringMax [private]
+ */
+static void
+TrioOutStreamStringMax(trio_T *self, int output)
+{
+  char **buffer;
+
+  assert(VALID(self));
+  buffer = (char **)self->location;
+  assert(VALID(buffer));
+
+  if (self->processed < self->max)
+    {
+      **buffer = (char)output;
+      (*buffer)++;
+      self->committed++;
+    }
+  self->processed++;
+}
+
+/*************************************************************************
+ * TrioOutStreamStringDynamic [private]
+ */
+#define DYNAMIC_START_SIZE 32
+struct dynamicBuffer {
+  char *buffer;
+  size_t length;
+  size_t allocated;
+};
+
+static void
+TrioOutStreamStringDynamic(trio_T *self, int output)
+{
+  struct dynamicBuffer *infop;
+  
+  assert(VALID(self));
+  assert(VALID(self->location));
+
+  infop = (struct dynamicBuffer *)self->location;
+
+  if (infop->buffer == NULL)
+    {
+      /* Start with a reasonable size */
+      infop->buffer = (char *)malloc(DYNAMIC_START_SIZE);
+      if (infop->buffer == NULL)
+	return; /* fail */
+      
+      infop->allocated = DYNAMIC_START_SIZE;
+      self->processed = 0;
+      self->committed = 0;
+    }
+  else if (self->committed + sizeof(NIL) >= infop->allocated)
+    {
+      char *newptr;
+      
+      /* Allocate increasing chunks */
+      newptr = (char *)realloc(infop->buffer, infop->allocated * 2);
+      
+      if (newptr == NULL)
+	return;
+
+      infop->buffer = newptr;
+      infop->allocated *= 2;
+    }
+  
+  infop->buffer[self->committed] = output;
+  self->committed++;
+  self->processed++;
+  
+  infop->length = self->committed;
+}
+
+#ifndef HAVE_PRINTF
+/*************************************************************************
+ * trio_printf
+ */
+int
+printf(const char *format, ...)
+{
+  int status;
+  va_list args;
+
+  assert(VALID(format));
+  
+  va_start(args, format);
+  status = TrioFormat(stdout, 0, TrioOutStreamFile, format, args);
+  va_end(args);
+  return status;
+}
+#endif
+
+#ifndef HAVE_FPRINTF
+/*************************************************************************
+ * trio_fprintf
+ */
+int
+fprintf(FILE *file, const char *format, ...)
+{
+  int status;
+  va_list args;
+
+  assert(VALID(file));
+  assert(VALID(format));
+  
+  va_start(args, format);
+  status = TrioFormat(file, 0, TrioOutStreamFile, format, args);
+  va_end(args);
+  return status;
+}
+#endif
+
+#ifndef HAVE_VFPRINTF
+/*************************************************************************
+ * trio_vfprintf
+ */
+int
+vfprintf(FILE *file, const char *format, va_list args)
+{
+  assert(VALID(file));
+  assert(VALID(format));
+  assert(VALID(args));
+  
+  return TrioFormat(file, 0, TrioOutStreamFile, format, args);
+}
+#endif
+
+#ifndef HAVE_SPRINTF
+/*************************************************************************
+ * trio_sprintf
+ */
+int
+sprintf(char *buffer, const char *format, ...)
+{
+  int status;
+  va_list args;
+
+  assert(VALID(buffer));
+  assert(VALID(format));
+  
+  va_start(args, format);
+  status = TrioFormat(&buffer, 0, TrioOutStreamString, format, args);
+  *buffer = NIL; /* Terminate with NIL character */
+  va_end(args);
+  return status;
+}
+#endif
+
+#ifndef HAVE_VSPRINTF
+/*************************************************************************
+ * trio_vsprintf
+ */
+int
+vsprintf(char *buffer, const char *format, va_list args)
+{
+  int status;
+
+  assert(VALID(buffer));
+  assert(VALID(format));
+  assert(VALID(args));
+
+  status = TrioFormat(&buffer, 0, TrioOutStreamString, format, args);
+  *buffer = NIL;
+  return status;
+}
+#endif
+
+#ifndef HAVE_SNPRINTF
+/*************************************************************************
+ * trio_snprintf
+ */
+int
+snprintf(char *buffer, size_t bufferSize, const char *format, ...)
+{
+  int status;
+  va_list args;
+
+  assert(VALID(buffer));
+  assert(VALID(format));
+
+  va_start(args, format);
+  status = TrioFormat(&buffer, bufferSize > 0 ? bufferSize - 1 : 0,
+		      TrioOutStreamStringMax, format, args);
+  if (bufferSize > 0)
+    *buffer = NIL;
+  va_end(args);
+  return status;
+}
+#endif
+
+#ifndef  HAVE_VSNPRINTF
+/*************************************************************************
+ * trio_vsnprintf
+ */
+int
+vsnprintf(char *buffer, size_t bufferSize, const char *format,
+	       va_list args)
+{
+  int status;
+
+  assert(VALID(buffer));
+  assert(VALID(format));
+  assert(VALID(args));
+
+  status = TrioFormat(&buffer, bufferSize > 0 ? bufferSize - 1 : 0,
+		      TrioOutStreamStringMax, format, args);
+  if (bufferSize > 0)
+    *buffer = NIL;
+  return status;
+}
+#endif
+
+/*************************************************************************
+ *
+ * SCANNING
+ *
+ ************************************************************************/
+
+/* DV for libxml */
+#ifndef HAVE_SSCANF
+
+/*************************************************************************
+ * TrioSkipWhitespaces [private]
+ */
+static int
+TrioSkipWhitespaces(trio_T *self)
+{
+  int ch;
+
+  ch = self->current;
+  while (isspace(ch))
+    {
+      self->InStream(self, &ch);
+    }
+  return ch;
+}
+
+/*************************************************************************
+ * TrioGetCharacterClass [private]
+ *
+ * FIXME:
+ *  multibyte
+ */
+static int
+TrioGetCharacterClass(const char *format,
+		      int *indexPointer,
+		      int *flagsPointer,
+		      int *characterclass)
+{
+  int index = *indexPointer;
+  int i;
+  char ch;
+  char range_begin;
+  char range_end;
+
+  *flagsPointer &= ~FLAGS_EXCLUDE;
+
+  if (format[index] == QUALIFIER_CIRCUMFLEX)
+    {
+      *flagsPointer |= FLAGS_EXCLUDE;
+      index++;
+    }
+  /* If the ungroup character is at the beginning of the scanlist,
+   * it will be part of the class, and a second ungroup character
+   * must follow to end the group.
+   */
+  if (format[index] == SPECIFIER_UNGROUP)
+    {
+      characterclass[(int)SPECIFIER_UNGROUP]++;
+      index++;
+    }
+  /* Minus is used to specify ranges. To include minus in the class,
+   * it must be at the beginning of the list
+   */
+  if (format[index] == QUALIFIER_MINUS)
+    {
+      characterclass[(int)QUALIFIER_MINUS]++;
+      index++;
+    }
+  /* Collect characters */
+  for (ch = format[index];
+       ch != SPECIFIER_UNGROUP && ch != NIL;
+       ch = format[++index])
+    {
+      switch (ch)
+	{
+	case QUALIFIER_MINUS: /* Scanlist ranges */
+	  
+	  /* Both C99 and UNIX98 describes ranges as implementation-
+	   * defined.
+	   *
+	   * We support the following behaviour (although this may
+	   * change as we become wiser)
+	   * - only increasing ranges, ie. [a-b] but not [b-a]
+	   * - transitive ranges, ie. [a-b-c] == [a-c]
+	   * - trailing minus, ie. [a-] is interpreted as an 'a'
+	   *   and a '-'
+	   * - duplicates (although we can easily convert these
+	   *   into errors)
+	   */
+	  range_begin = format[index - 1];
+	  range_end = format[++index];
+	  if (range_end == SPECIFIER_UNGROUP)
+	    {
+	      /* Trailing minus is included */
+	      characterclass[(int)ch]++;
+	      ch = range_end;
+	      break; /* for */
+	    }
+	  if (range_end == NIL)
+	    return TRIO_ERROR_RETURN(TRIO_EINVAL, index);
+	  if (range_begin > range_end)
+	    return TRIO_ERROR_RETURN(TRIO_ERANGE, index);
+	    
+	  for (i = (int)range_begin; i <= (int)range_end; i++)
+	    characterclass[i]++;
+	    
+	  ch = range_end;
+	  break;
+
+	case QUALIFIER_COLON: /* Character class expressions */
+	  
+	  if (StrEqualMax(CLASS_ALNUM, sizeof(CLASS_ALNUM) - 1,
+			  &format[index]))
+	    {
+	      for (i = 0; i < MAX_CHARACTER_CLASS; i++)
+		if (isalnum(i))
+		  characterclass[i]++;
+	      index += sizeof(CLASS_ALNUM) - 1;
+	    }
+	  else if (StrEqualMax(CLASS_ALPHA, sizeof(CLASS_ALPHA) - 1,
+			  &format[index]))
+	    {
+	      for (i = 0; i < MAX_CHARACTER_CLASS; i++)
+		if (isalpha(i))
+		  characterclass[i]++;
+	      index += sizeof(CLASS_ALPHA) - 1;
+	    }
+	  else if (StrEqualMax(CLASS_CNTRL, sizeof(CLASS_CNTRL) - 1,
+			  &format[index]))
+	    {
+	      for (i = 0; i < MAX_CHARACTER_CLASS; i++)
+		if (iscntrl(i))
+		  characterclass[i]++;
+	      index += sizeof(CLASS_CNTRL) - 1;
+	    }
+	  else if (StrEqualMax(CLASS_DIGIT, sizeof(CLASS_DIGIT) - 1,
+			  &format[index]))
+	    {
+	      for (i = 0; i < MAX_CHARACTER_CLASS; i++)
+		if (isdigit(i))
+		  characterclass[i]++;
+	      index += sizeof(CLASS_DIGIT) - 1;
+	    }
+	  else if (StrEqualMax(CLASS_GRAPH, sizeof(CLASS_GRAPH) - 1,
+			  &format[index]))
+	    {
+	      for (i = 0; i < MAX_CHARACTER_CLASS; i++)
+		if (isgraph(i))
+		  characterclass[i]++;
+	      index += sizeof(CLASS_GRAPH) - 1;
+	    }
+	  else if (StrEqualMax(CLASS_LOWER, sizeof(CLASS_LOWER) - 1,
+			  &format[index]))
+	    {
+	      for (i = 0; i < MAX_CHARACTER_CLASS; i++)
+		if (islower(i))
+		  characterclass[i]++;
+	      index += sizeof(CLASS_LOWER) - 1;
+	    }
+	  else if (StrEqualMax(CLASS_PRINT, sizeof(CLASS_PRINT) - 1,
+			  &format[index]))
+	    {
+	      for (i = 0; i < MAX_CHARACTER_CLASS; i++)
+		if (isprint(i))
+		  characterclass[i]++;
+	      index += sizeof(CLASS_PRINT) - 1;
+	    }
+	  else if (StrEqualMax(CLASS_PUNCT, sizeof(CLASS_PUNCT) - 1,
+			  &format[index]))
+	    {
+	      for (i = 0; i < MAX_CHARACTER_CLASS; i++)
+		if (ispunct(i))
+		  characterclass[i]++;
+	      index += sizeof(CLASS_PUNCT) - 1;
+	    }
+	  else if (StrEqualMax(CLASS_SPACE, sizeof(CLASS_SPACE) - 1,
+			  &format[index]))
+	    {
+	      for (i = 0; i < MAX_CHARACTER_CLASS; i++)
+		if (isspace(i))
+		  characterclass[i]++;
+	      index += sizeof(CLASS_SPACE) - 1;
+	    }
+	  else if (StrEqualMax(CLASS_UPPER, sizeof(CLASS_UPPER) - 1,
+			  &format[index]))
+	    {
+	      for (i = 0; i < MAX_CHARACTER_CLASS; i++)
+		if (isupper(i))
+		  characterclass[i]++;
+	      index += sizeof(CLASS_UPPER) - 1;
+	    }
+	  else if (StrEqualMax(CLASS_XDIGIT, sizeof(CLASS_XDIGIT) - 1,
+			  &format[index]))
+	    {
+	      for (i = 0; i < MAX_CHARACTER_CLASS; i++)
+		if (isxdigit(i))
+		  characterclass[i]++;
+	      index += sizeof(CLASS_XDIGIT) - 1;
+	    }
+	  else
+	    {
+	      characterclass[(int)ch]++;
+	    }
+	  break;
+
+	default:
+	  characterclass[(int)ch]++;
+	  break;
+	}
+    }
+  return 0;
+}
+
+/*************************************************************************
+ * TrioReadNumber [private]
+ *
+ * We implement our own number conversion in preference of strtol and
+ * strtoul, because we must handle 'long long' and thousand separators.
+ */
+static BOOLEAN_T
+TrioReadNumber(trio_T *self, LONGEST *target, int flags, int width, int base)
+{
+  LONGEST number = 0;
+  int digit;
+  int count;
+  BOOLEAN_T isNegative = FALSE;
+  int j;
+
+  assert(VALID(self));
+  assert(VALID(self->InStream));
+  assert((base >= MIN_BASE && base <= MAX_BASE) || (base == NO_BASE));
+
+  TrioSkipWhitespaces(self);
+  
+  if (!(flags & FLAGS_UNSIGNED))
+    {
+      /* Leading sign */
+      if (self->current == '+')
+	{
+	  self->InStream(self, NULL);
+	}
+      else if (self->current == '-')
+	{
+	  self->InStream(self, NULL);
+	  isNegative = TRUE;
+	}
+    }
+  
+  count = self->processed;
+  
+  if (flags & FLAGS_ALTERNATIVE)
+    {
+      switch (base)
+	{
+	case NO_BASE:
+	case BASE_OCTAL:
+	case BASE_HEX:
+	case BASE_BINARY:
+	  if (self->current == '0')
+	    {
+	      self->InStream(self, NULL);
+	      if (self->current)
+		{
+		  if ((base == BASE_HEX) &&
+		      (toupper(self->current) == 'X'))
+		    {
+		      self->InStream(self, NULL);
+		    }
+		  else if ((base == BASE_BINARY) &&
+			   (toupper(self->current) == 'B'))
+		    {
+		      self->InStream(self, NULL);
+		    }
+		}
+	    }
+	  else
+	    return FALSE;
+	  break;
+	default:
+	  break;
+	}
+    }
+
+  while (((width == NO_WIDTH) || (self->processed - count < width)) &&
+	 (! ((self->current == EOF) || isspace(self->current))))
+    {
+      if (isascii(self->current))
+	{
+	  digit = globalDigitArray[self->current];
+	  /* Abort if digit is not allowed in the specified base */
+	  if ((digit == -1) || (digit >= base))
+	    break;
+	}
+      else if (flags & FLAGS_QUOTE)
+	{
+	  /* Compare with thousands separator */
+	  for (j = 0; globalThousandSeparator[j] && self->current; j++)
+	    {
+	      if (globalThousandSeparator[j] != self->current)
+		break;
+
+	      self->InStream(self, NULL);
+	    }
+	  if (globalThousandSeparator[j])
+	    break; /* Mismatch */
+	  else
+	    continue; /* Match */
+	}
+      else
+	break;
+            
+      number *= base;
+      number += digit;
+
+      self->InStream(self, NULL);
+    }
+
+  /* Was anything read at all? */
+  if (self->processed == count)
+    return FALSE;
+  
+  if (target)
+    *target = (isNegative) ? -number : number;
+  return TRUE;
+}
+
+/*************************************************************************
+ * TrioReadChar [private]
+ */
+static BOOLEAN_T
+TrioReadChar(trio_T *self, char *target, int width)
+{
+  int i;
+  
+  assert(VALID(self));
+  assert(VALID(self->InStream));
+
+  for (i = 0;
+       (self->current != EOF) && (i < width);
+       i++)
+    {
+      if (target)
+	target[i] = self->current;
+      self->InStream(self, NULL);
+    }
+  return TRUE;
+}
+
+/*************************************************************************
+ * TrioReadString [private]
+ */
+static BOOLEAN_T
+TrioReadString(trio_T *self, char *target, int flags, int width)
+{
+  int i;
+  char ch;
+  LONGEST number;
+  
+  assert(VALID(self));
+  assert(VALID(self->InStream));
+
+  TrioSkipWhitespaces(self);
+    
+  /* Continue until end of string is reached, a whitespace is encountered,
+   * or width is exceeded
+   */
+  for (i = 0;
+       ((width == NO_WIDTH) || (i < width)) &&
+       (! ((self->current == EOF) || isspace(self->current)));
+       i++)
+    {
+      ch = self->current;
+      if ((flags & FLAGS_ALTERNATIVE) && (ch == CHAR_BACKSLASH))
+	{
+	  self->InStream(self, NULL);
+	  switch (self->current)
+	    {
+	    case 'a':
+	      ch = '\a';
+	      break;
+	    case 'b':
+	      ch = '\b';
+	      break;
+	    case 'f':
+	      ch = '\f';
+	      break;
+	    case 'n':
+	      ch = '\n';
+	      break;
+	    case 'r':
+	      ch = '\r';
+	      break;
+	    case 't':
+	      ch = '\t';
+	      break;
+	    case 'v':
+	      ch = '\v';
+	      break;
+	    case '\\':
+	      ch = '\\';
+	      break;
+	    default:
+	      if (isdigit(self->current))
+		{
+		  /* Read octal number */
+		  if (!TrioReadNumber(self, &number, 0, 3, BASE_OCTAL))
+		    return FALSE;
+		  ch = (char)number;
+		}
+	      else if (toupper(self->current) == 'X')
+		{
+		  /* Read hexadecimal number */
+		  self->InStream(self, NULL);
+		  if (!TrioReadNumber(self, &number, 0, 2, BASE_HEX))
+		    return FALSE;
+		  ch = (char)number;
+		}
+	      else
+		{
+		  ch = self->current;
+		}
+	      break;
+	    }
+	}
+      if (target)
+	target[i] = ch;
+      self->InStream(self, NULL);
+    }
+  if (target)
+    target[i] = NIL;
+  return TRUE;
+}
+
+/*************************************************************************
+ * TrioReadGroup [private]
+ *
+ * FIXME: characterclass does not work with multibyte characters
+ */
+static BOOLEAN_T
+TrioReadGroup(trio_T *self,
+	      char *target,
+	      int *characterclass,
+	      int flags,
+	      int width)
+{
+  unsigned int ch;
+  int i;
+  
+  assert(VALID(self));
+  assert(VALID(self->InStream));
+
+  ch = self->current;
+  for (i = 0;
+       ((width == NO_WIDTH) || (i < width)) &&
+       (! ((ch == EOF) ||
+	   (((flags & FLAGS_EXCLUDE) != 0) ^ (characterclass[ch] == 0))));
+       i++)
+    {
+      if (target)
+	target[i] = (char)ch;
+      self->InStream(self, &ch);
+    }
+  
+  if (target)
+    target[i] = NIL;
+  return TRUE;
+}
+
+/*************************************************************************
+ * TrioReadDouble [private]
+ *
+ * FIXME:
+ *  add hex-float format
+ *  add long double
+ */
+static BOOLEAN_T
+TrioReadDouble(trio_T *self,
+	       double *target,
+	       int flags,
+	       int width)
+{
+  int ch;
+  char doubleString[512] = "";
+  int index = 0;
+  int start;
+
+  if ((width == NO_WIDTH) || (width > sizeof(doubleString) - 1))
+    width = sizeof(doubleString) - 1;
+  
+  TrioSkipWhitespaces(self);
+  
+  /* Read entire double number from stream. StrToDouble requires a
+   * string as input, but InStream can be anything, so we have to
+   * collect all characters.
+   */
+  ch = self->current;
+  if ((ch == '+') || (ch == '-'))
+    {
+      doubleString[index++] = ch;
+      self->InStream(self, &ch);
+      width--;
+    }
+
+  start = index;
+#if defined(USE_INFINITE) || defined(USE_NAN)
+  switch (ch)
+    {
+#if defined(USE_NAN)
+    case 'n':
+    case 'N':
+      /* Not-a-number */
+      if (index != 0)
+	break;
+      /* FALLTHROUGH */
+#endif
+    case 'i':
+    case 'I':
+      /* Infinity */
+      while (isalpha(ch) && (index - start < width))
+	{
+	  doubleString[index++] = ch;
+	  self->InStream(self, &ch);
+	}
+      doubleString[index] = NIL;
+
+#if defined(USE_INFINITE)
+      /* Case insensitive string comparison */
+      if (StrEqual(&doubleString[start], INFINITE_UPPER) ||
+	  StrEqual(&doubleString[start], LONG_INFINITE_UPPER))
+	{
+	  *target = ((start == 1 && doubleString[0] == '-'))
+	    ? -HUGE_VAL
+	    : HUGE_VAL;
+	  return TRUE;
+	}
+#endif
+#if defined(USE_NAN)
+      if (StrEqual(doubleString, NAN_LOWER))
+	{
+	  /* NaN must not have a preceeding + nor - */
+	  *target = NAN;
+	  return TRUE;
+	}
+#endif
+      return FALSE;
+      
+    default:
+      break;
+    }
+#endif
+  
+  while (isdigit(ch) && (index - start < width))
+    {
+      /* Integer part */
+      doubleString[index++] = ch;
+      self->InStream(self, &ch);
+    }
+  if (ch == '.')
+    {
+      /* Decimal part */
+      doubleString[index++] = ch;
+      self->InStream(self, &ch);
+      while (isdigit(ch) && (index - start < width))
+	{
+	  doubleString[index++] = ch;
+	  self->InStream(self, &ch);
+	}
+      if ((ch == 'e') || (ch == 'E'))
+	{
+	  /* Exponent */
+	  doubleString[index++] = ch;
+	  self->InStream(self, &ch);
+	  if ((ch == '+') || (ch == '-'))
+	    {
+	      doubleString[index++] = ch;
+	      self->InStream(self, &ch);
+	    }
+	  while (isdigit(ch) && (index - start < width))
+	    {
+	      doubleString[index++] = ch;
+	      self->InStream(self, &ch);
+	    }
+	}
+    }
+
+  if ((index == start) || (*doubleString == NIL))
+    return FALSE;
+  
+  if (flags & FLAGS_LONGDOUBLE)
+/*     *longdoublePointer = StrToLongDouble()*/;
+  else
+    {
+      *target = StrToDouble(doubleString, NULL);
+    }
+  return TRUE;
+}
+
+/*************************************************************************
+ * TrioReadPointer [private]
+ */
+static BOOLEAN_T
+TrioReadPointer(trio_T *self, void **target, int flags)
+{
+  LONGEST number;
+  char buffer[sizeof(null)];
+
+  flags |= (FLAGS_UNSIGNED | FLAGS_ALTERNATIVE | FLAGS_NILPADDING);
+  
+  if (TrioReadNumber(self,
+		     &number,
+		     flags,
+		     POINTER_WIDTH,
+		     BASE_HEX))
+    {
+      /* The addition is a workaround for a compiler warning */
+      if (target)
+	*target = (void *)0 + number;
+      return TRUE;
+    }
+  else if (TrioReadString(self,
+			  (flags & FLAGS_IGNORE)
+			  ? NULL
+			  : buffer,
+			  0,
+			  sizeof(null) - 1))
+    {  
+      if (StrEqualCase(buffer, null))
+	{
+	  if (target)
+	    *target = NULL;
+	  return TRUE;
+	}
+    }
+  return FALSE;
+}
+
+/*************************************************************************
+ * TrioScan [private]
+ */
+static int
+TrioScan(void *source,
+	 size_t sourceSize,
+	 void (*InStream)(trio_T *, int *),
+	 const char *format,
+	 va_list args)
+{
+#if defined(USE_MULTIBYTE)
+  int charlen;
+#endif
+  int status;
+  int assignment;
+  parameter_T parameters[MAX_PARAMETERS];
+  trio_T internalData;
+  trio_T *data;
+  int ch;
+  int cnt;
+  int index; /* Index of format string */
+  int i; /* Index of current parameter */
+  int flags;
+  int width;
+  int base;
+  void *pointer;
+
+  assert(VALID(InStream));
+  assert(VALID(format));
+  assert(VALID(args));
+
+  memset(&internalData, 0, sizeof(internalData));
+  data = &internalData;
+  data->InStream = InStream;
+  data->location = source;
+  data->max = sourceSize;
+
+#if defined(USE_LOCALE)
+  if (NULL == globalLocaleValues)
+    {
+      TrioSetLocale();
+    }
+#endif
+  if (globalDigitsUnconverted)
+    {
+      memset(globalDigitArray, -1, sizeof(globalDigitArray));
+      for (i = 0; i < sizeof(globalDigitsLower) - 1; i++)
+	{
+	  globalDigitArray[(int)globalDigitsLower[i]] = i;
+	  globalDigitArray[(int)globalDigitsUpper[i]] = i;
+	}
+      globalDigitsUnconverted = FALSE;
+    }
+  
+  status = TrioPreprocess(TYPE_SCAN, format, parameters, args);
+  if (status < 0)
+    return status;
+
+  assignment = 0;
+  i = 0;
+  index = 0;
+  data->InStream(data, &ch);
+
+#if defined(USE_MULTIBYTE)
+  mblen(NULL, 0);
+#endif
+
+  while (format[index])
+    {
+#if defined(USE_MULTIBYTE)
+      if (! isascii(format[index]))
+	{
+	  charlen = mblen(&format[index], MB_LEN_MAX);
+	  /* Compare multibyte characters in format string */
+	  for (cnt = 0; cnt < charlen - 1; cnt++)
+	    {
+	      if (ch != format[index + cnt])
+		{
+		  return TRIO_ERROR_RETURN(TRIO_EINVAL, index);
+		}
+	      data->InStream(data, &ch);
+	    }
+	  continue; /* while */
+	}
+#endif
+      if (EOF == ch)
+	return EOF;
+      
+      if (CHAR_IDENTIFIER == format[index])
+	{
+	  if (CHAR_IDENTIFIER == format[index + 1])
+	    {
+	      /* Two % in format matches one % in input stream */
+	      if (CHAR_IDENTIFIER == ch)
+		{
+		  data->InStream(data, &ch);
+		  index += 2;
+		  continue; /* while format chars left */
+		}
+	      else
+		return TRIO_ERROR_RETURN(TRIO_EINVAL, index);
+	    }
+
+	  /* Skip the parameter entries */
+	  while (parameters[i].type == FORMAT_PARAMETER)
+	    i++;
+	  
+	  flags = parameters[i].flags;
+	  /* Find width */
+	  width = parameters[i].width;
+	  if (flags & FLAGS_WIDTH_PARAMETER)
+	    {
+	      /* Get width from parameter list */
+	      width = (int)parameters[width].data.number.asSigned;
+	    }
+	  /* Find base */
+	  base = parameters[i].base;
+	  if (flags & FLAGS_BASE_PARAMETER)
+	    {
+	      /* Get base from parameter list */
+	      base = (int)parameters[base].data.number.asSigned;
+	    }
+	  
+	  switch (parameters[i].type)
+	    {
+	    case FORMAT_INT:
+	      {
+		LONGEST number;
+
+		if (0 == base)
+		  base = BASE_DECIMAL;
+
+		if (!TrioReadNumber(data,
+				    &number,
+				    flags,
+				    width,
+				    base))
+		  return assignment;
+		assignment++;
+		
+		if (!(flags & FLAGS_IGNORE))
+		  {
+		    pointer = parameters[i].data.pointer;
+#if defined(QUALIFIER_SIZE_T) || defined(QUALIFIER_SIZE_T_UPPER)
+		    if (flags & FLAGS_SIZE_T)
+		      *(size_t *)pointer = (size_t)number;
+		    else
+#endif
+#if defined(QUALIFIER_PTRDIFF_T)
+		    if (flags & FLAGS_PTRDIFF_T)
+		      *(ptrdiff_t *)pointer = (ptrdiff_t)number;
+		    else
+#endif
+#if defined(QUALIFIER_INTMAX_T)
+		    if (flags & FLAGS_INTMAX_T)
+		      *(intmax_t *)pointer = (intmax_t)number;
+		    else
+#endif
+		    if (flags & FLAGS_QUAD)
+		      *(ULONGLONG int *)pointer = (ULONGLONG)number;
+		    else if (flags & FLAGS_LONG)
+		      *(long int *)pointer = (long int)number;
+		    else if (flags & FLAGS_SHORT)
+		      *(short int *)pointer = (short int)number;
+		    else
+		      *(int *)pointer = (int)number;
+		  }
+	      }
+	      break; /* FORMAT_INT */
+	      
+	    case FORMAT_STRING:
+	      if (!TrioReadString(data,
+				  (flags & FLAGS_IGNORE)
+				  ? NULL
+				  : parameters[i].data.string,
+				  flags,
+				  width))
+		return assignment;
+	      assignment++;
+	      break; /* FORMAT_STRING */
+	      
+	    case FORMAT_DOUBLE:
+	      if (!TrioReadDouble(data,
+				  (flags & FLAGS_IGNORE)
+				  ? NULL
+				  : parameters[i].data.doublePointer,
+				  flags,
+				  width))
+		return assignment;
+	      assignment++;
+	      break; /* FORMAT_DOUBLE */
+
+	    case FORMAT_GROUP:
+	      {
+		int characterclass[MAX_CHARACTER_CLASS + 1];
+		int rc;
+		
+		index += 2;
+		memset(characterclass, 0, sizeof(characterclass));
+		rc = TrioGetCharacterClass(format, &index, &flags,
+					   characterclass);
+		if (rc < 0)
+		  return rc;
+
+		if (!TrioReadGroup(data,
+				   (flags & FLAGS_IGNORE)
+				   ? NULL
+				   : parameters[i].data.string,
+				   characterclass,
+				   flags,
+				   parameters[i].width))
+		  return assignment;
+		assignment++;
+	      }
+	      break; /* FORMAT_GROUP */
+	      
+	    case FORMAT_COUNT:
+	      pointer = parameters[i].data.pointer;
+	      if (NULL != pointer)
+		{
+#if defined(QUALIFIER_SIZE_T) || defined(QUALIFIER_SIZE_T_UPPER)
+		  if (flags & FLAGS_SIZE_T)
+		    *(size_t *)pointer = (size_t)data->committed;
+		  else
+#endif
+#if defined(QUALIFIER_PTRDIFF_T)
+		  if (flags & FLAGS_PTRDIFF_T)
+		    *(ptrdiff_t *)pointer = (ptrdiff_t)data->committed;
+		  else
+#endif
+#if defined(QUALIFIER_INTMAX_T)
+		  if (flags & FLAGS_INTMAX_T)
+		    *(intmax_t *)pointer = (intmax_t)data->committed;
+		  else
+#endif
+		  if (flags & FLAGS_QUAD)
+		    {
+		      *(ULONGLONG int *)pointer = (ULONGLONG)data->committed;
+		    }
+		  else if (flags & FLAGS_LONG)
+		    {
+		      *(long int *)pointer = (long int)data->committed;
+		    }
+		  else if (flags & FLAGS_SHORT)
+		    {
+		      *(short int *)pointer = (short int)data->committed;
+		    }
+		  else
+		    {
+		      *(int *)pointer = (int)data->committed;
+		    }
+		}
+	      break; /* FORMAT_COUNT */
+	      
+	    case FORMAT_CHAR:
+	      if (!TrioReadChar(data,
+				(flags & FLAGS_IGNORE)
+				? NULL
+				: parameters[i].data.string,
+				(width == NO_WIDTH) ? 1 : width))
+		return assignment;
+	      assignment++;
+	      break; /* FORMAT_CHAR */
+	      
+	    case FORMAT_POINTER:
+	      if (!TrioReadPointer(data,
+				   (flags & FLAGS_IGNORE)
+				   ? NULL
+				   : parameters[i].data.pointer,
+				   flags))
+		return assignment;
+	      assignment++;
+	      break; /* FORMAT_POINTER */
+	      
+	    case FORMAT_PARAMETER:
+	      break; /* FORMAT_PARAMETER */
+	      
+	    default:
+	      return TRIO_ERROR_RETURN(TRIO_EINVAL, index);
+	    }
+	  ch = data->current;
+	  index = parameters[i].indexAfterSpecifier;
+	  i++;
+	}
+      else /* Not an % identifier */
+	{
+	  if (isspace((int)format[index]))
+	    {
+	      /* Whitespaces may match any amount of whitespaces */
+	      ch = TrioSkipWhitespaces(data);
+	    }
+	  else if (ch == format[index])
+	    {
+	      data->InStream(data, &ch);
+	    }
+	  else
+	    return TRIO_ERROR_RETURN(TRIO_EINVAL, index);
+	  
+	  index++;
+	}
+    }
+  return assignment;
+}
+
+/*************************************************************************
+ * TrioInStreamFile [private]
+ */
+static void
+TrioInStreamFile(trio_T *self, int *intPointer)
+{
+  FILE *file = (FILE *)self->location;
+
+  assert(VALID(self));
+  assert(VALID(file));
+
+  self->current = fgetc(file);
+  self->processed++;
+  self->committed++;
+  
+  if (VALID(intPointer))
+    {
+      *intPointer = self->current;
+    }
+}
+
+/*************************************************************************
+ * TrioInStreamFileDescriptor [private]
+ */
+static void
+TrioInStreamFileDescriptor(trio_T *self, int *intPointer)
+{
+  int fd = *((int *)self->location);
+  int size;
+  unsigned char input;
+
+  assert(VALID(self));
+
+  size = read(fd, &input, sizeof(char));
+  self->current = (size == 0) ? EOF : input;
+  self->processed++;
+  self->committed++;
+  
+  if (VALID(intPointer))
+    {
+      *intPointer = self->current;
+    }
+}
+
+/*************************************************************************
+ * TrioInStreamString [private]
+ */
+static void
+TrioInStreamString(trio_T *self, int *intPointer)
+{
+  unsigned char **buffer;
+
+  assert(VALID(self));
+  assert(VALID(self->InStream));
+  assert(VALID(self->location));
+
+  buffer = (unsigned char **)self->location;
+  self->current = (*buffer)[0];
+  if (self->current == NIL)
+    self->current = EOF;
+  (*buffer)++;
+  self->processed++;
+  self->committed++;
+  
+  if (VALID(intPointer))
+    {
+      *intPointer = self->current;
+    }
+}
+
+/*************************************************************************
+ * trio_sscanf
+ */
+int
+sscanf(const char *buffer, const char *format, ...)
+{
+  int status;
+  va_list args;
+
+  assert(VALID(buffer));
+  assert(VALID(format));
+  
+  va_start(args, format);
+  status = TrioScan(&buffer, 0, TrioInStreamString, format, args);
+  va_end(args);
+  return status;
+}
+
+/* DV for libxml */
+#endif /* !HAVE_SSCANF */
+#endif /* WITH_TRIO */
diff --git a/trio.h b/trio.h
new file mode 100644
index 0000000..eb30ff7
--- /dev/null
+++ b/trio.h
@@ -0,0 +1,118 @@
+/*************************************************************************
+ *
+ * $Id$
+ *
+ * Copyright (C) 1998 Bjorn Reese and Daniel Stenberg.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
+ * MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE AUTHORS AND
+ * CONTRIBUTORS ACCEPT NO RESPONSIBILITY IN ANY CONCEIVABLE MANNER.
+ *
+ ************************************************************************/
+
+#ifndef H_TRIO
+#define H_TRIO
+
+#include <stdio.h>
+#include <stdarg.h>
+#include <stdlib.h>
+
+/*
+ * Error codes.
+ *
+ * Remember to add a textual description to trio_strerror.
+ */
+enum {
+  TRIO_EOF      = 1,
+  TRIO_EINVAL   = 2,
+  TRIO_ETOOMANY = 3,
+  TRIO_EDBLREF  = 4,
+  TRIO_EGAP     = 5,
+  TRIO_ENOMEM   = 6,
+  TRIO_ERANGE   = 7
+};
+
+/* Error macros */
+#define TRIO_ERROR_CODE(x) ((-(x)) & 0x00FF)
+#define TRIO_ERROR_POSITION(x) ((-(x)) >> 8)
+#define TRIO_ERROR_NAME(x) trio_strerror(x)
+
+/*
+ * trio_sprintf(target, format, ...)
+ * trio_snprintf(target, maxsize, format, ...)
+ *
+ *   Build 'target' according to 'format' and succesive
+ *   arguments. This is equal to the sprintf() and
+ *   snprintf() functions.
+ */
+
+int trio_printf(const char *format, ...);
+int trio_vprintf(const char *format, va_list args);
+int trio_fprintf(FILE *file, const char *format, ...);
+int trio_vfprintf(FILE *file, const char *format, va_list args);
+int trio_dprintf(int fd, const char *format, ...);
+int trio_vdprintf(int fd, const char *format, va_list args);
+int trio_sprintf(char *buffer, const char *format, ...);
+int trio_snprintf(char *buffer, size_t max, const char *format, ...);
+int trio_snprintfcat(char *buffer, size_t max, const char *format, ...);
+int trio_vsprintf(char *buffer, const char *format, va_list args);
+int trio_vsnprintf(char *buffer, size_t bufferSize, const char *format,
+		   va_list args);
+int trio_vsnprintfcat(char *buffer, size_t bufferSize, const char *format,
+                      va_list args);
+char *trio_aprintf(const char *format, ...);
+char *trio_vaprintf(const char *format, va_list args);
+int trio_asprintf(char **ret, const char *format, ...);
+int trio_vasprintf(char **ret, const char *format, va_list args);
+
+int trio_scanf(const char *format, ...);
+int trio_vscanf(const char *format, va_list args);
+int trio_fscanf(FILE *file, const char *format, ...);
+int trio_vfscanf(FILE *file, const char *format, va_list args);
+int trio_dscanf(int fd, const char *format, ...);
+int trio_vdscanf(int fd, const char *format, va_list args);
+int trio_sscanf(const char *buffer, const char *format, ...);
+int trio_vsscanf(const char *buffer, const char *format, va_list args);
+
+const char *trio_strerror(int);
+
+#ifdef TRIO_REPLACE_STDIO
+/* Replace the <stdio.h> functions */
+#define printf trio_printf
+#define vprintf trio_vprintf
+#define fprintf trio_fprintf
+#define vfprintf trio_vfprintf
+#define sprintf trio_sprintf
+#define vsprintf trio_vsprintf
+#define snprintf trio_snprintf
+#define vsnprintf trio_vsnprintf
+#define scanf trio_scanf
+#define vscanf trio_vscanf
+#define fscanf trio_fscanf
+#define vfscanf trio_vfscanf
+#define sscanf trio_sscanf
+#define vsscanf trio_vsscanf
+/* These aren't stdio functions, but we make them look similar */
+#define dprintf trio_dprintf
+#define vdprintf trio_vdprintf
+#define aprintf trio_aprintf
+#define vaprintf trio_vaprintf
+#define asprintf trio_asprintf
+#define vasprintf trio_vasprintf
+#define dscanf trio_dscanf
+#define vdscanf trio_vdscanf
+#endif
+
+/* strio compatible names */
+#define StrScan sscanf /* FIXME: must be trio_sscanf */
+#define StrFormat trio_sprintf
+#define StrFormatMax trio_snprintf
+#define StrFormatAlloc trio_aprintf
+#define StrFormatAppendMax trio_snprintfcat
+
+#endif /* H_TRIO */
diff --git a/uri.c b/uri.c
index 183bef3..ffd32f8 100644
--- a/uri.c
+++ b/uri.c
@@ -596,7 +596,6 @@
     if (uri->opaque != NULL) xmlFree(uri->opaque);
     if (uri->authority != NULL) xmlFree(uri->authority);
     if (uri->query != NULL) xmlFree(uri->query);
-    MEM_CLEANUP(uri, sizeof(xmlURI));
     xmlFree(uri);
 }
 
diff --git a/valid.c b/valid.c
index 6633c98..822adeb 100644
--- a/valid.c
+++ b/valid.c
@@ -321,7 +321,6 @@
     if (cur->c1 != NULL) xmlFreeElementContent(cur->c1);
     if (cur->c2 != NULL) xmlFreeElementContent(cur->c2);
     if (cur->name != NULL) xmlFree((xmlChar *) cur->name);
-    MEM_CLEANUP(cur, sizeof(xmlElementContent));
     xmlFree(cur);
 }
 
@@ -486,7 +485,6 @@
 	xmlFree((xmlChar *) elem->name);
     if (elem->prefix != NULL)
 	xmlFree((xmlChar *) elem->prefix);
-    MEM_CLEANUP(elem, sizeof(xmlElement));
     xmlFree(elem);
 }
 
@@ -781,7 +779,6 @@
     if (cur->next != NULL) xmlFreeEnumeration(cur->next);
 
     if (cur->name != NULL) xmlFree((xmlChar *) cur->name);
-    MEM_CLEANUP(cur, sizeof(xmlEnumeration));
     xmlFree(cur);
 }
 
@@ -941,7 +938,6 @@
 	xmlFree((xmlChar *) attr->defaultValue);
     if (attr->prefix != NULL)
 	xmlFree((xmlChar *) attr->prefix);
-    MEM_CLEANUP(attr, sizeof(xmlAttribute));
     xmlFree(attr);
 }
 
@@ -1289,7 +1285,6 @@
 	xmlFree((xmlChar *) nota->PublicID);
     if (nota->SystemID != NULL)
 	xmlFree((xmlChar *) nota->SystemID);
-    MEM_CLEANUP(nota, sizeof(xmlNotation));
     xmlFree(nota);
 }
 
@@ -1494,7 +1489,6 @@
     if (id == NULL) return;
     if (id->value != NULL)
 	xmlFree((xmlChar *) id->value);
-    MEM_CLEANUP(id, sizeof(xmlID));
     xmlFree(id);
 }
 
@@ -1732,7 +1726,6 @@
 	if (ref == NULL) return;
 	if (ref->value != NULL)
 		xmlFree((xmlChar *)ref->value);
-	MEM_CLEANUP(ref, sizeof(xmlRef));
 	xmlFree(ref);
 }
 
@@ -2580,12 +2573,8 @@
 
     if ((elem->ns != NULL) && (elem->ns->prefix != NULL)) {
 	xmlChar qname[500];
-#ifdef HAVE_SNPRINTF
 	snprintf((char *) qname, sizeof(qname), "%s:%s",
 		 elem->ns->prefix, elem->name);
-#else
-	sprintf((char *) qname, "%s:%s", elem->ns->prefix, elem->name);
-#endif
         qname[sizeof(qname) - 1] = 0;
 	attrDecl = xmlGetDtdAttrDesc(doc->intSubset, qname, name);
 	if ((attrDecl == NULL) && (doc->extSubset != NULL))
@@ -2857,12 +2846,8 @@
 
     if ((elem->ns != NULL) && (elem->ns->prefix != NULL)) {
 	xmlChar qname[500];
-#ifdef HAVE_SNPRINTF
 	snprintf((char *) qname, sizeof(qname), "%s:%s",
 		 elem->ns->prefix, elem->name);
-#else
-	sprintf((char *) qname, "%s:%s", elem->ns->prefix, elem->name);
-#endif
         qname[sizeof(qname) - 1] = 0;
 	if (attr->ns != NULL) {
 	    attrDecl = xmlGetDtdQAttrDesc(doc->intSubset, qname,
@@ -3460,13 +3445,8 @@
 		    name = child->name;
 		    if ((child->ns != NULL) && (child->ns->prefix != NULL)) {
 			xmlChar qname[500];
-#ifdef HAVE_SNPRINTF
 			snprintf((char *) qname, sizeof(qname), "%s:%s",
 				 child->ns->prefix, child->name);
-#else
-			sprintf((char *) qname, "%s:%s",
-                                 child->ns->prefix, child->name);
-#endif
                         qname[sizeof(qname) - 1] = 0;
 			cont = elemDecl->content;
 			while (cont != NULL) {
@@ -3649,12 +3629,8 @@
 	if (!xmlStrEqual(doc->intSubset->name, root->name)) {
 	    if ((root->ns != NULL) && (root->ns->prefix != NULL)) {
 		xmlChar qname[500];
-#ifdef HAVE_SNPRINTF
 		snprintf((char *) qname, sizeof(qname), "%s:%s",
 			 root->ns->prefix, root->name);
-#else
-		sprintf((char *) qname, "%s:%s", root->ns->prefix, root->name);
-#endif
 		qname[sizeof(qname) - 1] = 0;
 		if (xmlStrEqual(doc->intSubset->name, qname))
 		    goto name_ok;
diff --git a/xinclude.c b/xinclude.c
index b27773f..d4d4821 100644
--- a/xinclude.c
+++ b/xinclude.c
@@ -281,7 +281,6 @@
 	xmlFree(ctxt->txtTab);
     if (ctxt->txturlTab != NULL)
 	xmlFree(ctxt->txturlTab);
-    MEM_CLEANUP(ctxt, sizeof(xmlXIncludeCtxt));
     xmlFree(ctxt);
 }
 
diff --git a/xlink.c b/xlink.c
index 6821490..60842d1 100644
--- a/xlink.c
+++ b/xlink.c
@@ -163,13 +163,8 @@
 			ret = XLINK_TYPE_EXTENDED_SET;
 		} else {
 		    xmlChar buf[200];
-#ifdef HAVE_SNPRINTF
 		    snprintf((char *) buf, sizeof(buf), "%s:external-linkset",
 			     (char *) xlink->prefix);
-#else
-		    sprintf((char *) buf, "%s:external-linkset",
-			    (char *) xlink->prefix);
-#endif
                     buf[sizeof(buf) - 1] = 0;
 		    if (xmlStrEqual(role, buf))
 			ret = XLINK_TYPE_EXTENDED_SET;
diff --git a/xmlIO.c b/xmlIO.c
index 8aa0173..2f3257b 100644
--- a/xmlIO.c
+++ b/xmlIO.c
@@ -825,7 +825,6 @@
 	in->buffer = NULL;
     }
 
-    MEM_CLEANUP(in, (size_t) sizeof(xmlParserInputBuffer));
     xmlFree(in);
 }
 
@@ -862,7 +861,6 @@
 	out->buffer = NULL;
     }
 
-    MEM_CLEANUP(out, (size_t) sizeof(xmlOutputBuffer));
     xmlFree(out);
     return(written);
 }
diff --git a/xmlmemory.c b/xmlmemory.c
index 1cbeca2..d693ba3 100644
--- a/xmlmemory.c
+++ b/xmlmemory.c
@@ -283,9 +283,12 @@
 xmlMemFree(void *ptr)
 {
     MEMHDR *p;
+    char *target;
 
     TEST_POINT
 
+    target = (char *) ptr;
+
     p = CLIENT_2_HDR(ptr);
     if (p->mh_tag != MEMTAG) {
        Mem_Tag_Err(p);
@@ -293,6 +296,7 @@
     }
     p->mh_tag = ~MEMTAG;
     debugMemSize -= p->mh_size;
+    memset(target, -1, p->mh_size);
 
 #ifdef MEM_LIST
     debugmem_list_delete(p);
diff --git a/xmlmemory.h b/xmlmemory.h
index c909e4c..12538ab 100644
--- a/xmlmemory.h
+++ b/xmlmemory.h
@@ -26,6 +26,7 @@
 
 #ifdef DEBUG_MEMORY_LOCATION
 #define MEM_LIST /* keep a list of all the allocated memory blocks */
+#define DEBUG_MEMORY_FREED
 #endif
 
 #ifdef DEBUG_MEMORY_FREED
diff --git a/xmlversion.h.in b/xmlversion.h.in
index 934dc7c..7d1471c 100644
--- a/xmlversion.h.in
+++ b/xmlversion.h.in
@@ -24,6 +24,15 @@
 #define LIBXML_TEST_VERSION xmlCheckVersion(@LIBXML_VERSION_NUMBER@);
 
 /*
+ * Whether the trio support need to be configured in
+ */
+#if @WITH_TRIO@
+#define WITH_TRIO
+#else
+#define WITHOUT_TRIO
+#endif
+
+/*
  * Whether the FTP support is configured in
  */
 #if @WITH_FTP@
diff --git a/xpath.c b/xpath.c
index fd760e5..9d49cd1 100644
--- a/xpath.c
+++ b/xpath.c
@@ -327,10 +327,8 @@
 	    xmlFree(op->value5);
     }
     if (comp->steps != NULL) {
-	MEM_CLEANUP(comp->steps, sizeof(xmlXPathStepOp));
 	xmlFree(comp->steps);
     }
-    MEM_CLEANUP(comp, sizeof(xmlXPathCompExpr));
     xmlFree(comp);
 }
 
@@ -1488,10 +1486,8 @@
 xmlXPathFreeNodeSet(xmlNodeSetPtr obj) {
     if (obj == NULL) return;
     if (obj->nodeTab != NULL) {
-	MEM_CLEANUP(obj->nodeTab, (size_t) sizeof(xmlNodePtr) * obj->nodeMax);
 	xmlFree(obj->nodeTab);
     }
-    MEM_CLEANUP(obj, (size_t) sizeof(xmlNodeSet));
     xmlFree(obj);
 }
 
@@ -1512,10 +1508,8 @@
 	    xmlFreeNodeList(obj->nodeTab[i]);
 
     if (obj->nodeTab != NULL) {
-	MEM_CLEANUP(obj->nodeTab, (size_t) sizeof(xmlNodePtr) * obj->nodeMax);
 	xmlFree(obj->nodeTab);
     }
-    MEM_CLEANUP(obj, (size_t) sizeof(xmlNodeSet));
     xmlFree(obj);
 }
 
@@ -1673,7 +1667,6 @@
 void
 xmlXPathFreeNodeSetList(xmlXPathObjectPtr obj) {
     if (obj == NULL) return;
-    MEM_CLEANUP(obj, (size_t) sizeof(xmlXPathObject));
     xmlFree(obj);
 }
 
@@ -2190,7 +2183,6 @@
 	    xmlXPathFreeValueTree(obj->nodesetval);
     }
 
-    MEM_CLEANUP(obj, (size_t) sizeof(xmlXPathObject));
     xmlFree(obj);
 }
 
@@ -2256,7 +2248,6 @@
     xmlXPathRegisteredNsCleanup(ctxt);
     xmlXPathRegisteredFuncsCleanup(ctxt);
     xmlXPathRegisteredVariablesCleanup(ctxt);
-    MEM_CLEANUP(ctxt, (size_t) sizeof(xmlXPathContext));
     xmlFree(ctxt);
 }
 
@@ -2374,12 +2365,10 @@
 void
 xmlXPathFreeParserContext(xmlXPathParserContextPtr ctxt) {
     if (ctxt->valueTab != NULL) {
-        MEM_CLEANUP(ctxt->valueTab, 10 * (size_t) sizeof(xmlXPathObjectPtr));
         xmlFree(ctxt->valueTab);
     }
     if (ctxt->comp)
 	xmlXPathFreeCompExpr(ctxt->comp);
-    MEM_CLEANUP(ctxt, (size_t) sizeof(xmlXPathParserContext));
     xmlFree(ctxt);
 }
 
@@ -4430,15 +4419,9 @@
 	    
 	    else {
 		char name[2000];
-#ifdef HAVE_SNPRINTF
 		snprintf(name, sizeof(name), "%s:%s", 
 			 (char *) cur->nodesetval->nodeTab[i]->ns->prefix,
 			 (char *) cur->nodesetval->nodeTab[i]->name);
-#else
-		sprintf(name, "%s:%s", 
-			(char *) cur->nodesetval->nodeTab[i]->ns->prefix,
-			(char *) cur->nodesetval->nodeTab[i]->name);
-#endif
 		name[sizeof(name) - 1] = 0;
 		valuePush(ctxt, xmlXPathNewCString(name));
 	    }
diff --git a/xpointer.c b/xpointer.c
index 06165ae..ead8c17 100644
--- a/xpointer.c
+++ b/xpointer.c
@@ -715,11 +715,8 @@
 	for (i = 0;i < obj->locNr; i++) {
             xmlXPathFreeObject(obj->locTab[i]);
 	}
-	MEM_CLEANUP(obj->locTab,
-	       (size_t) sizeof(xmlXPathObjectPtr) * obj->locMax);
 	xmlFree(obj->locTab);
     }
-    MEM_CLEANUP(obj, (size_t) sizeof(xmlLocationSet));
     xmlFree(obj);
 }