Like this (we need to stop copy/pasting createCompileLogger(), though)
private static TreeLogger createCompileLogger() {
PrintWriterTreeLogger logger = new PrintWriterTreeLogger(new
PrintWriter(
System.err, true));
logger.setMaxDetail(TreeLogger.ERROR);
return logger;
}
CompilationState state = CompilationStateBuilder.buildFrom(
createCompileLogger(), JavaResourceBase.getStandardResources());
http://gwt-code-reviews.appspot.com/126802
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