DFDL schema for input file with rows separated by one or more newlines?

[Costello, Roger L.]

Hello DFDL community,

I have an input file containing a sequence of rows, separated by one or more 
newlines, for example:

[cid:image002.png@01D4858C.EE9ED7D0]

If I assume that there are no more than 3 newlines between rows, then this 
works:

<xs:sequence   dfdl:separator="%NL; %NL;%NL; %NL;%NL;%NL;"
                        dfdl:separatorPosition="infix"
dfdl:separatorSuppressionPolicy="trailingEmptyStrict">

Of course, if the input contains 4 newlines between rows, then it breaks.

I guess, the following is not legal, right?

                dfdl:separator="%NL;+?"

Is there a more robust solution?

Below is my DFDL schema.

/Roger

<xs:element name="really-simple-format">
    <xs:complexType>
        <xs:sequence dfdl:separator="%NL; %NL;%NL; %NL;%NL;%NL;"
                                   dfdl:separatorPosition="infix"
                                    
dfdl:separatorSuppressionPolicy="trailingEmptyStrict">
            <xs:element name="row" maxOccurs="unbounded">
                <xs:complexType>
                    <xs:sequence dfdl:separator=":" 
dfdl:separatorPosition="infix">
                        <xs:element name="label" type="xs:string" />
                        <xs:element name="message" type="xs:string" />
                    </xs:sequence>
                </xs:complexType>
            </xs:element>
        </xs:sequence>
    </xs:complexType>
</xs:element>