On deeply nested "matroska" rnc schemas, I get this error from jing:
Exception in thread "main" java.lang.StackOverflowError
at com.thaiopensource.relaxng.pattern.BinaryPattern.checkRecursion(BinaryPattern.java:16)
We need a new option rnc-jing-java-options. Setting it to "-Xss8M" avoids the problem