got this stack when i try tro edit the file attached.
same if i rename file, copy to other place,
seem caused by a here document which contain #{$VARIABLE}
puts <<-EEND
...
EEND
stack:
org.eclipse.jface.text.Assert$AssertionFailedException: Assertion failed:
at org.eclipse.jface.text.Assert.isTrue(Assert.java:188)
at org.eclipse.jface.text.Assert.isTrue(Assert.java:173)
at org.eclipse.jface.text.Position.<init>(Position.java:61)
at org.eclipse.jface.text.TypedPosition.<init>(TypedPosition.java:36)
at org.eclipse.jface.text.rules.FastPartitioner.documentChanged2(FastPartitioner.java:381)
at org.eclipse.jface.text.AbstractDocument.updateDocumentStructures(AbstractDocument.java:632)
at org.eclipse.jface.text.AbstractDocument.fireDocumentChanged(AbstractDocument.java:719)
at org.eclipse.jface.text.AbstractDocument.set(AbstractDocument.java:1116)
at org.eclipse.core.internal.filebuffers.SynchronizableDocument.set(SynchronizableDocument.java:175)
at org.eclipse.core.internal.filebuffers.ResourceTextFileBuffer.setDocumentContent(ResourceTextFileBuffer.java:546)
at org.eclipse.core.internal.filebuffers.ResourceTextFileBuffer.initializeFileBufferContent(ResourceTextFileBuffer.java:269)
at org.eclipse.core.internal.filebuffers.ResourceFileBuffer.create(ResourceFileBuffer.java:242)
at org.eclipse.core.internal.filebuffers.TextFileBufferManager.connect(TextFileBufferManager.java:108)
at org.eclipse.ui.editors.text.TextFileDocumentProvider.createFileInfo(TextFileDocumentProvider.java:561)
at org.eclipse.ui.editors.text.TextFileDocumentProvider.connect(TextFileDocumentProvider.java:482)
at org.eclipse.ui.texteditor.AbstractTextEditor.doSetInput(AbstractTextEditor.java:3063)
at org.eclipse.ui.texteditor.StatusTextEditor.doSetInput(StatusTextEditor.java:173)
at org.eclipse.ui.texteditor.AbstractDecoratedTextEditor.doSetInput(AbstractDecoratedTextEditor.java:1512)
at org.eclipse.ui.editors.text.TextEditor.doSetInput(TextEditor.java:178)
at org.eclipse.ui.texteditor.AbstractTextEditor$5.run(AbstractTextEditor.java:2396)
at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:369)
at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:313)
at org.eclipse.jface.window.ApplicationWindow$1.run(ApplicationWindow.java:763)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
at org.eclipse.jface.window.ApplicationWindow.run(ApplicationWindow.java:760)
at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2283)
at org.eclipse.ui.texteditor.AbstractTextEditor.internalInit(AbstractTextEditor.java:2414)
at org.eclipse.ui.texteditor.AbstractTextEditor.init(AbstractTextEditor.java:2441)
at org.eclipse.ui.internal.EditorManager.createSite(EditorManager.java:842)
at org.eclipse.ui.internal.EditorReference.createPartHelper(EditorReference.java:583)
at org.eclipse.ui.internal.EditorReference.createPart(EditorReference.java:372)
at org.eclipse.ui.internal.WorkbenchPartReference.getPart(WorkbenchPartReference.java:566)
at org.eclipse.ui.internal.EditorReference.getEditor(EditorReference.java:214)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditorBatched(WorkbenchPage.java:2595)
at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:2528)
at org.eclipse.ui.internal.WorkbenchPage.access$10(WorkbenchPage.java:2520)
at org.eclipse.ui.internal.WorkbenchPage$9.run(WorkbenchPage.java:2505)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:2500)
at org.eclipse.ui.actions.OpenWithMenu.openEditor(OpenWithMenu.java:288)
at org.eclipse.ui.actions.OpenWithMenu.access$0(OpenWithMenu.java:280)
at org.eclipse.ui.actions.OpenWithMenu$2.handleEvent(OpenWithMenu.java:184)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1085)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3180)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2856)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1930)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1894)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:422)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:95)
at org.eclipse.core.internal.runtime.PlatformActivator$1.run(PlatformActivator.java:78)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:92)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:68)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:177)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.eclipse.core.launcher.Main.invokeFramework(Main.java:336)
at org.eclipse.core.launcher.Main.basicRun(Main.java:280)
at org.eclipse.core.launcher.Main.run(Main.java:977)
at org.eclipse.core.launcher.Main.main(Main.java:952)