Index: src/OFMutableString.m
==================================================================
--- src/OFMutableString.m
+++ src/OFMutableString.m
@@ -572,11 +572,12 @@
 {
 	size_t i;
 
 	for (i = 0; i < s->cStringLength; i++)
 		if (s->cString[i] != ' '  && s->cString[i] != '\t' &&
-		    s->cString[i] != '\n' && s->cString[i] != '\r')
+		    s->cString[i] != '\n' && s->cString[i] != '\r' &&
+		    s->cString[i] != '\f')
 			break;
 
 	s->cStringLength -= i;
 	s->length -= i;
 
@@ -597,11 +598,12 @@
 	size_t d;
 	char *p;
 
 	d = 0;
 	for (p = s->cString + s->cStringLength - 1; p >= s->cString; p--) {
-		if (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\r')
+		if (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\r' &&
+		    *p != '\f')
 			break;
 
 		*p = '\0';
 		d++;
 	}
@@ -623,11 +625,12 @@
 	size_t d, i;
 	char *p;
 
 	d = 0;
 	for (p = s->cString + s->cStringLength - 1; p >= s->cString; p--) {
-		if (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\r')
+		if (*p != ' ' && *p != '\t' && *p != '\n' && *p != '\r' &&
+		    *p != '\f')
 			break;
 
 		*p = '\0';
 		d++;
 	}
@@ -635,11 +638,12 @@
 	s->cStringLength -= d;
 	s->length -= d;
 
 	for (i = 0; i < s->cStringLength; i++)
 		if (s->cString[i] != ' '  && s->cString[i] != '\t' &&
-		    s->cString[i] != '\n' && s->cString[i] != '\r')
+		    s->cString[i] != '\n' && s->cString[i] != '\r' &&
+		    s->cString[i] != '\f')
 			break;
 
 	s->cStringLength -= i;
 	s->length -= i;
 

Index: src/OFString.m
==================================================================
--- src/OFString.m
+++ src/OFString.m
@@ -1690,11 +1690,11 @@
 	int i = 0;
 	intmax_t value = 0;
 	BOOL expectWhitespace = NO;
 
 	while (*cString == ' ' || *cString == '\t' || *cString == '\n' ||
-	    *cString == '\r') {
+	    *cString == '\r' || *cString == '\f') {
 		cString++;
 		cStringLength--;
 	}
 
 	if (cString[0] == '-' || cString[0] == '+')
@@ -1701,11 +1701,12 @@
 		i++;
 
 	for (; i < cStringLength; i++) {
 		if (expectWhitespace) {
 			if (cString[i] != ' ' && cString[i] != '\t' &&
-			    cString[i] != '\n' && cString[i] != '\r')
+			    cString[i] != '\n' && cString[i] != '\r' &&
+			    cString[i] != '\f')
 				@throw [OFInvalidFormatException
 				    newWithClass: isa];
 			continue;
 		}
 
@@ -1715,11 +1716,12 @@
 				@throw [OFOutOfRangeException
 				    newWithClass: isa];
 
 			value = (value * 10) + (cString[i] - '0');
 		} else if (cString[i] == ' ' || cString[i] == '\t' ||
-		    cString[i] == '\n' || cString[i] == '\r')
+		    cString[i] == '\n' || cString[i] == '\r' ||
+		    cString[i] == '\f')
 			expectWhitespace = YES;
 		else
 			@throw [OFInvalidFormatException newWithClass: isa];
 	}
 
@@ -1736,11 +1738,11 @@
 	int i = 0;
 	uintmax_t value = 0;
 	BOOL expectWhitespace = NO, foundValue = NO;
 
 	while (*cString == ' ' || *cString == '\t' || *cString == '\n' ||
-	    *cString == '\r') {
+	    *cString == '\r' || *cString == '\f') {
 		cString++;
 		cStringLength--;
 	}
 
 	if (cStringLength == 0)
@@ -1754,11 +1756,12 @@
 	for (; i < cStringLength; i++) {
 		uintmax_t newValue;
 
 		if (expectWhitespace) {
 			if (cString[i] != ' ' && cString[i] != '\t' &&
-			    cString[i] != '\n' && cString[i] != '\r')
+			    cString[i] != '\n' && cString[i] != '\r' &&
+			    cString[i] != '\f')
 				@throw [OFInvalidFormatException
 				    newWithClass: isa];
 			continue;
 		}
 
@@ -1771,11 +1774,11 @@
 		} else if (cString[i] >= 'a' && cString[i] <= 'f') {
 			newValue = (value << 4) | (cString[i] - 'a' + 10);
 			foundValue = YES;
 		} else if (cString[i] == 'h' || cString[i] == ' ' ||
 		    cString[i] == '\t' || cString[i] == '\n' ||
-		    cString[i] == '\r') {
+		    cString[i] == '\r' || cString[i] == '\f') {
 			expectWhitespace = YES;
 			continue;
 		} else
 			@throw [OFInvalidFormatException newWithClass: isa];
 
@@ -1796,20 +1799,21 @@
 	const char *cString = s->cString;
 	char *endPointer = NULL;
 	float value;
 
 	while (*cString == ' ' || *cString == '\t' || *cString == '\n' ||
-	    *cString == '\r')
+	    *cString == '\r' || *cString == '\f')
 		cString++;
 
 	value = strtof(cString, &endPointer);
 
 	/* Check if there are any invalid chars left */
 	if (endPointer != NULL)
 		for (; *endPointer != '\0'; endPointer++)
 			if (*endPointer != ' ' && *endPointer != '\t' &&
-			    *endPointer != '\n' && *endPointer != '\r')
+			    *endPointer != '\n' && *endPointer != '\r' &&
+			    *endPointer != '\f')
 				@throw [OFInvalidFormatException
 				    newWithClass: isa];
 
 	return value;
 }
@@ -1819,20 +1823,21 @@
 	const char *cString = s->cString;
 	char *endPointer = NULL;
 	double value;
 
 	while (*cString == ' ' || *cString == '\t' || *cString == '\n' ||
-	    *cString == '\r')
+	    *cString == '\r' || *cString == '\f')
 		cString++;
 
 	value = strtod(cString, &endPointer);
 
 	/* Check if there are any invalid chars left */
 	if (endPointer != NULL)
 		for (; *endPointer != '\0'; endPointer++)
 			if (*endPointer != ' ' && *endPointer != '\t' &&
-			    *endPointer != '\n' && *endPointer != '\r')
+			    *endPointer != '\n' && *endPointer != '\r' &&
+			    *endPointer != '\f')
 				@throw [OFInvalidFormatException
 				    newWithClass: isa];
 
 	return value;
 }

Index: src/OFXMLParser.m
==================================================================
--- src/OFXMLParser.m
+++ src/OFXMLParser.m
@@ -315,11 +315,11 @@
 {
 	size_t length;
 
 	if ((finishedParsing || [previous count] < 1) && buffer[*i] != ' ' &&
 	    buffer[*i] != '\t' && buffer[*i] != '\n' && buffer[*i] != '\r' &&
-	    buffer[*i] != '<')
+	    buffer[*i] != '\f' && buffer[*i] != '<')
 		@throw [OFMalformedXMLException newWithClass: isa
 						      parser: self];
 
 	if (buffer[*i] != '<')
 		return;
@@ -407,11 +407,12 @@
 
 	for (i = last = 0; i < length; i++) {
 		switch (piState) {
 		case 0:
 			if (cString[i] == ' ' || cString[i] == '\t' ||
-			    cString[i] == '\r' || cString[i] == '\n')
+			    cString[i] == '\r' || cString[i] == '\n' ||
+			    cString[i] == '\f')
 				continue;
 
 			last = i;
 			piState = 1;
 			i--;
@@ -523,11 +524,12 @@
 	const char *cacheCString, *tmp;
 	size_t length, cacheLength;
 	OFString *cacheString;
 
 	if (buffer[*i] != ' ' && buffer[*i] != '\t' && buffer[*i] != '\n' &&
-	    buffer[*i] != '\r' && buffer[*i] != '>' && buffer[*i] != '/')
+	    buffer[*i] != '\r' && buffer[*i] != '\f' && buffer[*i] != '>' &&
+	    buffer[*i] != '/')
 		return;
 
 	if ((length = *i - *last) > 0)
 		cache_append(cache, buffer + *last, encoding, length);
 
@@ -624,11 +626,11 @@
 	size_t length, cacheLength;
 	OFString *cacheString;
 	OFString *ns;
 
 	if (buffer[*i] != ' ' && buffer[*i] != '\t' && buffer[*i] != '\n' &&
-	    buffer[*i] != '\r' && buffer[*i] != '>')
+	    buffer[*i] != '\r' && buffer[*i] != '\f' && buffer[*i] != '>')
 		return;
 
 	if ((length = *i - *last) > 0)
 		cache_append(cache, buffer + *last, encoding, length);
 
@@ -700,11 +702,12 @@
 	OFXMLAttribute **attributesCArray;
 	size_t j, attributesCount;
 
 	if (buffer[*i] != '>' && buffer[*i] != '/') {
 		if (buffer[*i] != ' ' && buffer[*i] != '\t' &&
-		    buffer[*i] != '\n' && buffer[*i] != '\r') {
+		    buffer[*i] != '\n' && buffer[*i] != '\r' &&
+		    buffer[*i] != '\f') {
 			*last = *i;
 			state = OF_XMLPARSER_IN_ATTR_NAME;
 			(*i)--;
 		}
 
@@ -826,11 +829,11 @@
 				   last: (size_t*)last
 {
 	*last = *i + 1;
 
 	if (buffer[*i] == ' ' || buffer[*i] == '\t' || buffer[*i] == '\n' ||
-	    buffer[*i] == '\r')
+	    buffer[*i] == '\r' || buffer[*i] == '\f')
 		return;
 
 	if (buffer[*i] != '\'' && buffer[*i] != '"')
 		@throw [OFMalformedXMLException newWithClass: isa
 						      parser: self];
@@ -903,11 +906,11 @@
 {
 	if (buffer[*i] == '>') {
 		*last = *i + 1;
 		state = OF_XMLPARSER_OUTSIDE_TAG;
 	} else if (buffer[*i] != ' ' && buffer[*i] != '\t' &&
-	    buffer[*i] != '\n' && buffer[*i] != '\r')
+	    buffer[*i] != '\n' && buffer[*i] != '\r' && buffer[*i] != '\f')
 		@throw [OFMalformedXMLException newWithClass: isa
 						      parser: self];
 }
 
 /* In <! */
@@ -1063,11 +1066,11 @@
 				i: (size_t*)i
 			     last: (size_t*)last
 {
 	if ((level < 6 && buffer[*i] != "OCTYPE"[level]) ||
 	    (level == 6 && buffer[*i] != ' ' && buffer[*i] != '\t' &&
-	    buffer[*i] != '\n' && buffer[*i] != '\r'))
+	    buffer[*i] != '\n' && buffer[*i] != '\r' && buffer[*i] != '\f'))
 		@throw [OFMalformedXMLException newWithClass: isa
 						      parser: self];
 
 	if (level < 7 || buffer[*i] == '<')
 		level++;