regetom commented on pull request #481:
URL: https://github.com/apache/daffodil/pull/481#issuecomment-793960178


   With some help from John Wass I have been attempting to fix the problems 
causing the unit test failures.  The failure of testLengthKindDelimited2 in 
daffodil-core/src/test//scala/general/testPrimitives.scala has me stumped.  The 
test defines an element name "e1" that contains a complex type with 
<xs:sequence dfdl:separator="%WSP;%WSP*;\%NL;%WSP;%WSP*;" 
dfdl:separatorPosition="infix">.  After the complex type definition it calls 
TestUtils.testString(sch, "abcd  \\\n  efgh"). .TestUtils.testString calls 
runSchemaOnData(testSchema, Misc.stringToReadableByteChannel(data), 
areTracing).. runSchemaOnData calls Compiler.compileNode(testSchema).  
Eventually evDelimiters.DelimiterEvlMixin.evalAndConvert calls 
converter.convertConstant(expressionResult, ci, false) with expressionResult =  
"%WSP;%WSP*;\%NL;%WSP;%WSP*;".  This results in a call to testRaw in 
DelimiterCookerNoES class of EntityReplacer.scal with raw = 
"%WSP;%WSP*;\%NL;%WSP;%WSP*;".  This is where the error message "Property dfd
 l:separator contains disallowed character classes: %WSP;, %WSP;" is coming 
from.  When match Iterator is called it seems like the values to match are 
correct, but the returned result is "%WSP, %WSP".
   
![image](https://user-images.githubusercontent.com/11149210/110484387-9958bf00-80b8-11eb-8db5-b756cdb443a3.png)
   


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