Opening .md file with WikiText-Editor results in "Editor could not be initialized"

[dstango]

When trying to open the following .md-File (I tried to strip down my original file to a nearly minimal test case):

1. Payara-Deployment in Eclipse für gewünschten Ziel-Payara anstoßen mit `"Run -> Run Configurations ..."`

   ### DALI 1 - DEV - clean install, deploy to LOCALHOST.launch
   ==> LOKALE ENTWICKLUNG. Zielserver: localhost:4848.

the editor does not open properly, but shows

The eclipse error log contains the following exception:

org.eclipse.ui.PartInitException: Editor could not be initialized.
	at org.eclipse.ui.texteditor.AbstractTextEditor.internalInit(AbstractTextEditor.java:3200)
	at org.eclipse.ui.texteditor.AbstractTextEditor.init(AbstractTextEditor.java:3209)
	at org.eclipse.mylyn.internal.wikitext.ui.editor.MarkupEditor.init(MarkupEditor.java:1119)
	at org.eclipse.ui.internal.EditorReference.initialize(EditorReference.java:353)
	at org.eclipse.ui.internal.e4.compatibility.CompatibilityPart.create(CompatibilityPart.java:344)
	at jdk.internal.reflect.GeneratedMethodAccessor99.invoke(Unknown Source)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.eclipse.e4.core.internal.di.MethodRequestor.execute(MethodRequestor.java:58)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:987)
	at org.eclipse.e4.core.internal.di.InjectorImpl.processAnnotated(InjectorImpl.java:952)
	at org.eclipse.e4.core.internal.di.InjectorImpl.internalInject(InjectorImpl.java:141)
	at org.eclipse.e4.core.internal.di.InjectorImpl.internalMake(InjectorImpl.java:395)
	at org.eclipse.e4.core.internal.di.InjectorImpl.make(InjectorImpl.java:322)
	at org.eclipse.e4.core.contexts.ContextInjectionFactory.make(ContextInjectionFactory.java:202)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.createFromBundle(ReflectionContributionFactory.java:91)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.doCreate(ReflectionContributionFactory.java:60)
	at org.eclipse.e4.ui.internal.workbench.ReflectionContributionFactory.create(ReflectionContributionFactory.java:42)
	at org.eclipse.e4.ui.workbench.renderers.swt.ContributedPartRenderer.createWidget(ContributedPartRenderer.java:132)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createWidget(PartRenderingEngine.java:995)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:659)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.safeCreateGui(PartRenderingEngine.java:763)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$2.run(PartRenderingEngine.java:728)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.createGui(PartRenderingEngine.java:712)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.lambda$0(PartServiceImpl.java:105)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.lambda$0(UIEventHandler.java:38)
	at org.eclipse.swt.widgets.Synchronizer.syncExec(Synchronizer.java:183)
	at org.eclipse.ui.internal.UISynchronizer.syncExec(UISynchronizer.java:133)
	at org.eclipse.swt.widgets.Display.syncExec(Display.java:4803)
	at org.eclipse.e4.ui.workbench.swt.DisplayUISynchronize.syncExec(DisplayUISynchronize.java:34)
	at org.eclipse.e4.ui.services.internal.events.UIEventHandler.handleEvent(UIEventHandler.java:38)
	at org.eclipse.equinox.internal.event.EventHandlerWrapper.handleEvent(EventHandlerWrapper.java:205)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:203)
	at org.eclipse.equinox.internal.event.EventHandlerTracker.dispatchEvent(EventHandlerTracker.java:1)
	at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:234)
	at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:151)
	at org.eclipse.equinox.internal.event.EventAdminImpl.dispatchEvent(EventAdminImpl.java:133)
	at org.eclipse.equinox.internal.event.EventAdminImpl.sendEvent(EventAdminImpl.java:75)
	at org.eclipse.equinox.internal.event.EventComponent.sendEvent(EventComponent.java:44)
	at org.eclipse.e4.ui.services.internal.events.EventBroker.send(EventBroker.java:55)
	at org.eclipse.e4.ui.internal.workbench.UIEventPublisher.notifyChanged(UIEventPublisher.java:63)
	at org.eclipse.emf.common.notify.impl.BasicNotifierImpl.eNotify(BasicNotifierImpl.java:424)
	at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElementGen(ElementContainerImpl.java:170)
	at org.eclipse.e4.ui.model.application.ui.impl.ElementContainerImpl.setSelectedElement(ElementContainerImpl.java:188)
	at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.showElementInWindow(ModelServiceImpl.java:660)
	at org.eclipse.e4.ui.internal.workbench.ModelServiceImpl.bringToTop(ModelServiceImpl.java:624)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.delegateBringToTop(PartServiceImpl.java:790)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.bringToTop(PartServiceImpl.java:401)
	at org.eclipse.e4.ui.internal.workbench.PartServiceImpl.showPart(PartServiceImpl.java:1264)
	at org.eclipse.ui.internal.WorkbenchPage.busyOpenEditor(WorkbenchPage.java:3233)
	at org.eclipse.ui.internal.WorkbenchPage.lambda$11(WorkbenchPage.java:3123)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3121)
	at org.eclipse.ui.internal.WorkbenchPage.openEditor(WorkbenchPage.java:3091)
	at org.eclipse.ui.actions.OpenWithMenu.openEditor(OpenWithMenu.java:325)
	at org.eclipse.ui.actions.OpenWithMenu.lambda$0(OpenWithMenu.java:182)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4274)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1066)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4072)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3660)
	at org.eclipse.jface.window.Window.runEventLoop(Window.java:823)
	at org.eclipse.jface.window.Window.open(Window.java:799)
	at org.eclipse.ui.internal.views.log.EventDetailsDialog.open(EventDetailsDialog.java:192)
	at org.eclipse.ui.internal.views.log.EventDetailsDialogAction.run(EventDetailsDialogAction.java:102)
	at org.eclipse.ui.internal.views.log.LogView.lambda$2(LogView.java:599)
	at org.eclipse.jface.viewers.StructuredViewer$1.run(StructuredViewer.java:780)
	at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:45)
	at org.eclipse.jface.util.SafeRunnable.run(SafeRunnable.java:174)
	at org.eclipse.jface.viewers.StructuredViewer.fireDoubleClick(StructuredViewer.java:777)
	at org.eclipse.jface.viewers.AbstractTreeViewer.handleDoubleSelect(AbstractTreeViewer.java:1542)
	at org.eclipse.jface.viewers.StructuredViewer$4.widgetDefaultSelected(StructuredViewer.java:1211)
	at org.eclipse.jface.util.OpenStrategy.fireDefaultSelectionEvent(OpenStrategy.java:272)
	at org.eclipse.jface.util.OpenStrategy$1.handleEvent(OpenStrategy.java:329)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4274)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1066)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4072)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3660)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1155)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
	at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1046)
	at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:155)
	at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:643)
	at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:338)
	at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:550)
	at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:171)
	at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152)
	at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:136)
	at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:402)
	at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659)
	at org.eclipse.equinox.launcher.Main.basicRun(Main.java:596)
	at org.eclipse.equinox.launcher.Main.run(Main.java:1467)
Caused by: java.lang.IllegalStateException
	at org.eclipse.mylyn.internal.wikitext.ui.editor.syntax.FastMarkupPartitioner$PartitionBuilder.endDocument(FastMarkupPartitioner.java:397)
	at org.eclipse.mylyn.wikitext.parser.markup.AbstractMarkupLanguage.processContent(AbstractMarkupLanguage.java:354)
	at org.eclipse.mylyn.wikitext.parser.MarkupParser.parse(MarkupParser.java:93)
	at org.eclipse.mylyn.wikitext.parser.MarkupParser.parse(MarkupParser.java:83)
	at org.eclipse.mylyn.internal.wikitext.ui.editor.syntax.FastMarkupPartitioner$PartitionTokenScanner.computeOlp(FastMarkupPartitioner.java:176)
	at org.eclipse.mylyn.internal.wikitext.ui.editor.syntax.FastMarkupPartitioner$PartitionTokenScanner.setPartialRange(FastMarkupPartitioner.java:134)
	at org.eclipse.mylyn.internal.wikitext.ui.editor.syntax.FastMarkupPartitioner$PartitionTokenScanner.setRange(FastMarkupPartitioner.java:250)
	at org.eclipse.jface.text.rules.FastPartitioner.initialize(FastPartitioner.java:163)
	at org.eclipse.mylyn.internal.wikitext.ui.editor.syntax.FastMarkupPartitioner.resetPartitions(FastMarkupPartitioner.java:74)
	at org.eclipse.mylyn.internal.wikitext.ui.editor.syntax.FastMarkupPartitioner.setMarkupLanguage(FastMarkupPartitioner.java:64)
	at org.eclipse.mylyn.internal.wikitext.ui.editor.MarkupEditor.setMarkupLanguage(MarkupEditor.java:1153)
	at org.eclipse.mylyn.internal.wikitext.ui.editor.MarkupEditor.initializeMarkupLanguage(MarkupEditor.java:1140)
	at org.eclipse.mylyn.internal.wikitext.ui.editor.MarkupEditor.doSetInput(MarkupEditor.java:571)
	at org.eclipse.ui.texteditor.AbstractTextEditor.lambda$1(AbstractTextEditor.java:3167)
	at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:434)
	at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:352)
	at org.eclipse.ui.internal.WorkbenchWindow.lambda$7(WorkbenchWindow.java:2346)
	at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
	at org.eclipse.ui.internal.WorkbenchWindow.run(WorkbenchWindow.java:2344)
	at org.eclipse.ui.texteditor.AbstractTextEditor.internalInit(AbstractTextEditor.java:3184)
	... 100 more

I'm using Eclipse 2023-06 with the following version of Mylyn WikiText (just updated today via marketplace):

[akurtakov]

I confirm the issue but don't have time to look into it and it doesn't happen with all the other md files I edit. Do you want to try debugging and maybe fixing it yourself?