Stack trace for Check exceptions

Hi!

How can I configure Checkstyle to emit a detailed stack trace of
exceptions (e.g., NullPointerException) that are thrown inside Check
classes (both user-defined and checkstyle checks)? I am using the jar
file of checkstyle and would like to leave it in its original state, so
I am searching for a solution to my problem that does not require
compiling Checkstyle myself. Currently, Checkstyle swallows all the
details and simply notes "Got an exception - ..." in the report.

In the source code of TreeWalker, I noticed that Checkstyle uses Apache
Commons Logging to log the details of the message, but where can I find
these details? I already tried to configure logging with a
commons-logging.properties, but to no avail.

Thanks in advance,
-- Nenad

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