With a dummy master.xml

<?xml version="1.0" encoding="UTF-8"?>
<book>
</book>

we get lineNumber: 4; columnNumber: 19; Invalid byte 1 of 1-byte UTF-8 sequence.

Adding a comment before <book> raises the lineNumber to 5.

https://github.com/pressgang/jdocbook-core/blob/master/src/main/java/org/jboss/jdocbook/profile/ProfilerImpl.java#L109

buildSource must be doing something wrong.

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