java.lang.NullPointerException
   at com.raelity.jvi.swing.SwingBuffer.getLineCount(SwingBuffer.java:123)
   at com.raelity.jvi.swing.SwingTextView.hasAnyFolding(SwingTextView.java:709)
   at com.raelity.jvi.core.GetChar.gotc(GetChar.java:158)
   at com.raelity.jvi.core.Hook.gotc(Hook.java:88)
   at com.raelity.jvi.manager.Scheduler.keyStroke(Scheduler.java:220)
   at com.raelity.jvi.swing.SwingFactory$EnqueCharAction.actionPerformed(SwingFactory.java:617)
   at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:0)
   at javax.swing.JComponent.processKeyBinding(JComponent.java:0)
   at javax.swing.JComponent.processKeyBindings(JComponent.java:0)
   at javax.swing.JComponent.processKeyEvent(JComponent.java:0)
   at java.awt.Component.processEvent(Component.java:0)
   at java.awt.Container.processEvent(Container.java:0)
   at java.awt.Component.dispatchEventImpl(Component.java:0)
   at java.awt.Container.dispatchEventImpl(Container.java:0)
   at java.awt.Component.dispatchEvent(Component.java:0)
   at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:0)
   at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:0)
   at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:0)
   at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:0)
   at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:0)
   at java.awt.Component.dispatchEventImpl(Component.java:0)
   at java.awt.Container.dispatchEventImpl(Container.java:0)
   at java.awt.Window.dispatchEventImpl(Window.java:0)
   at java.awt.Component.dispatchEvent(Component.java:0)
   at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:0)
   at java.awt.EventQueue.access$200(EventQueue.java:0)
   at java.awt.EventQueue$3.run(EventQueue.java:0)
   at java.awt.EventQueue$3.run(EventQueue.java:0)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:0)
   at java.awt.EventQueue$4.run(EventQueue.java:0)
   at java.awt.EventQueue$4.run(EventQueue.java:0)
   at java.security.AccessController.doPrivileged(AccessController.java:0)
   at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:0)
   at java.awt.EventQueue.dispatchEvent(EventQueue.java:0)
   at org.netbeans.core.TimableEventQueue.dispatchEvent(TimableEventQueue.java:159)
   at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:0)
   at java.awt.EventDispatchThread.run(EventDispatchThread.java:0)