diff -r 699781a1d6fd -r 5dfbf7b45873 libidav/davqlparser.h
--- a/libidav/davqlparser.h	Thu Dec 21 15:55:19 2017 +0100
+++ b/libidav/davqlparser.h	Thu Dec 21 16:48:58 2017 +0100
@@ -200,10 +200,10 @@
  *                  | "*", {",", NamedField}
  *                  | FieldExpression, {",", FieldExpression};
  * FieldExpression  = NamedField | Identifier;
- * NamedField  = Expression, " as ", Identifier;
+ * NamedField       = Expression, " as ", Identifier;
  * 
- * SetExpressions   = SetExpression, {",", SetExpression};
- * SetExpression    = Identifier, "=", Expression;
+ * Assignments   = Assignment, {",", Assignment};
+ * Assignment    = Identifier, "=", Expression;
  * 
  * Path     = String
  *          | "/", [PathNode, {"/", PathNode}], ["/"];
@@ -231,7 +231,7 @@
  * 
  * <b>SET:</b>
  * <pre>
- * SetStatement = "set ",SetExpressions,
+ * SetStatement = "set ",Assignments,
  * " at ", Path,
  * [" with ", WithClause],
  * (" where ", LogicalExpression) | " anywhere";
@@ -304,6 +304,9 @@
 /** A closed parenthesis ')' is missing. */
 #define DAVQL_ERROR_MISSING_PAR 13
 
+/** An assignment operator '=' is missing. */
+#define DAVQL_ERROR_MISSING_ASSIGN 14
+
 /** The type of the expression could not be determined. */
 #define DAVQL_ERROR_INVALID_EXPR 21