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java.lang.Error: Error: could not match input	at org.opensolaris.opengrok.analysis.erlang.ErlangXref.zzScanError(ErlangXref.java:642)	at org.opensolaris.opengrok.analysis.erlang.ErlangXref.yylex(ErlangXref.java:868)	at org.opensolaris.opengrok.analysis.JFlexXref.write(JFlexXref.java:314)	at org.opensolaris.opengrok.analysis.plain.PlainAnalyzer.writeXref(PlainAnalyzer.java:118)	at org.opensolaris.opengrok.analysis.plain.PlainAnalyzer.analyze(PlainAnalyzer.java:91)	at org.opensolaris.opengrok.analysis.plain.AbstractSourceCodeAnalyzer.analyze(AbstractSourceCodeAnalyzer.java:69)	at org.opensolaris.opengrok.analysis.AnalyzerGuru.populateDocument(AnalyzerGuru.java:354)	at org.opensolaris.opengrok.index.IndexDatabase.addFile(IndexDatabase.java:622)	at org.opensolaris.opengrok.index.IndexDatabase.indexDown(IndexDatabase.java:883)	at org.opensolaris.opengrok.index.IndexDatabase.indexDown(IndexDatabase.java:848)	at org.opensolaris.opengrok.index.IndexDatabase.indexDown(IndexDatabase.java:848)	at org.opensolaris.opengrok.index.IndexDatabase.indexDown(IndexDatabase.java:848)	at org.opensolaris.opengrok.index.IndexDatabase.indexDown(IndexDatabase.java:848)	at org.opensolaris.opengrok.index.IndexDatabase.update(IndexDatabase.java:397)	at org.opensolaris.opengrok.index.IndexDatabase$2.run(IndexDatabase.java:184)	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)	at java.util.concurrent.FutureTask.run(FutureTask.java:266)	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)	at java.lang.Thread.run(Thread.java:745)