I have noticed that cxml is looping for a certain combination of xml/dtd. It loops in the recurse function inside compile-content-model in xml-parse.lisp. I have put a lot of time on trying to understand how the code is supposed to work but without success.
It would be great if someone knowing the code could have a look at this!
A minimal reproducible case is available here https://doremir.com/files/cxml/xml-test.zip.
The xml file from the case looks like this:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE a PUBLIC "" "">
<a>
<c/>
</a>
And the dtd file looks like this:
<!ELEMENT b EMPTY>
<!ELEMENT c EMPTY>
<!ELEMENT a ((b?)*, c?)>
The real world case is from parsing MusicXML and the problematic xml excerpt looks like this:
<sound tempo="90">
<offset sound="yes">8</offset>
</sound>
And the corresponding dtd excerpt looks like this:
<!ELEMENT sound ((midi-device?, midi-instrument?, play?)*, offset?)>
I have noticed that cxml is looping for a certain combination of xml/dtd. It
loops in the recurse function inside compile-content-model in xml-parse.lisp. I have put a lot of time on trying to understand how the code is supposed to work but without success.It would be great if someone knowing the code could have a look at this!
A minimal reproducible case is available here https://doremir.com/files/cxml/xml-test.zip.
The xml file from the case looks like this:
And the dtd file looks like this:
The real world case is from parsing MusicXML and the problematic xml excerpt looks like this:
And the corresponding dtd excerpt looks like this:
<!ELEMENT sound ((midi-device?, midi-instrument?, play?)*, offset?)>