java.lang.IllegalArgumentException: indent=-34 < 0
        at org.netbeans.modules.editor.indent.api.IndentUtils.createIndentString(IndentUtils.java:200)
        at org.netbeans.modules.editor.indent.spi.Context.modifyIndent(Context.java:177)
        at org.netbeans.modules.scala.editing.ScalaFormatter$1.run(ScalaFormatter.java:310)
        at org.netbeans.editor.GuardedDocument.runAtomic(GuardedDocument.java:294)
        at org.netbeans.modules.scala.editing.ScalaFormatter.reindent(ScalaFormatter.java:267)
        at org.netbeans.modules.scala.editing.ScalaFormatter.reindent(ScalaFormatter.java:140)
        at org.netbeans.modules.gsf.GsfIndentTask.reindent(GsfIndentTask.java:69)
        at org.netbeans.modules.editor.indent.TaskHandler$MimeItem.runTask(TaskHandler.java:502)
        at org.netbeans.modules.editor.indent.TaskHandler.runTasks(TaskHandler.java:271)
        at org.netbeans.modules.editor.indent.IndentImpl.reindent(IndentImpl.java:232)
        at org.netbeans.modules.editor.indent.FormatterImpl.indentLine(FormatterImpl.java:164)
        at org.netbeans.modules.editor.indent.FormatterImpl.indentNewLine(FormatterImpl.java:159)
        at org.netbeans.editor.BaseKit$InsertBreakAction$1.run(BaseKit.java:1217)
        at org.netbeans.editor.GuardedDocument.runAtomicAsUser(GuardedDocument.java:324)
        at org.netbeans.editor.BaseKit$InsertBreakAction.actionPerformed(BaseKit.java:1208)
        at org.netbeans.editor.BaseAction.actionPerformed(BaseAction.java:296)
        at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1636)
        at javax.swing.JComponent.processKeyBinding(JComponent.java:2849)
        at javax.swing.JComponent.processKeyBindings(JComponent.java:2884)
        at javax.swing.JComponent.processKeyEvent(JComponent.java:2812)
        at java.awt.Component.processEvent(Component.java:5818)
        at java.awt.Container.processEvent(Container.java:2058)
        at java.awt.Component.dispatchEventImpl(Component.java:4413)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Component.dispatchEvent(Component.java:4243)
        at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1848)
        at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:697)
        at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:962)
        at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:834)
        at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:661)
        at java.awt.Component.dispatchEventImpl(Component.java:4285)
        at java.awt.Container.dispatchEventImpl(Container.java:2116)
        at java.awt.Window.dispatchEventImpl(Window.java:2440)
        at java.awt.Component.dispatchEvent(Component.java:4243)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:599)
        at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:104)
        at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)