diff -r bda9d3c83cb7 -r 7c85dc9a310b src/INIWriter.h
--- a/src/INIWriter.h	Sun Dec 13 16:47:25 2020 +0100
+++ b/src/INIWriter.h	Thu Sep 09 18:57:37 2021 +0200
@@ -43,6 +43,9 @@
 
 	relpipe::common::type::StringX hierarchySeparator = L"/";
 	bool allowSections = true;
+	
+	bool skipEmpty = false;
+	bool skipNull = false;
 
 	bool hasContent = false;
 
@@ -196,6 +199,8 @@
 		else if (uri == option::KeyValueSeparator) keyValueSeparator = convertor.to_bytes(value);
 		else if (uri == option::HierarchySeparator) hierarchySeparator = value;
 		else if (uri == option::AllowSections) allowSections = parseBoolean(value);
+		else if (uri == option::SkipEmpty) skipEmpty = parseBoolean(value);
+		else if (uri == option::SkipNull) skipNull = parseBoolean(value);
 		else if (uri == option::QuotesTypeForSections) quotingForSections.type = parseQuotingType(value);
 		else if (uri == option::QuotesTypeForKeys) quotingForKeys.type = parseQuotingType(value);
 		else if (uri == option::QuotesTypeForValues) quotingForValues.type = parseQuotingType(value);
@@ -243,6 +248,8 @@
 	}
 
 	void entry(const EntryEvent& event) {
+		if (skipEmpty && event.value.empty()) return;
+		if (skipNull && event.value.empty()) return; // TODO: distinguish null and empty (when supported in the relpipe format)
 		// TODO: escape/quote parts separately + configurable quoting of parts or whole + the same for sub keys
 		if (!allowSections && currentSection.size()) output << escape(getCurrentSectionFullName(), EscapingProcessor::TextType::EntryKey) << convertor.to_bytes(hierarchySeparator);
 		output << escape(event.key, EscapingProcessor::TextType::EntryKey);