diff -r bda9d3c83cb7 -r 7c85dc9a310b src/uri.h
--- a/src/uri.h	Sun Dec 13 16:47:25 2020 +0100
+++ b/src/uri.h	Thu Sep 09 18:57:37 2021 +0200
@@ -40,6 +40,8 @@
 static const wchar_t* QuotesPatternForKeys = L"quotes-pattern-for-keys";
 static const wchar_t* QuotesPatternForValues = L"quotes-pattern-for-values";
 static const wchar_t* Dialect = L"dialect";
+static const wchar_t* SkipEmpty = L"skip-empty";
+static const wchar_t* SkipNull = L"skip-null";
 }
 
 /** names of dynamically registered escaping processors; they are also options */