Seeing this error when I create a .md file and edit it (using the main branch) using the Mylyn-Runtime launch:
java.lang.IllegalStateException: Conflicting handlers: {[ActionHandler(org.eclipse.ui.internal.editors.quickdiff.CompositeRevertAction@679cdfc3), for 'org.eclipse.ui.editors.quickdiff.revert', in PartImpl (org.eclipse.e4.ui.compatibility.editor) removeOnHide org.eclipse.mylyn.wikitext.ui.editor.markupEditor active activeOnClose (a.md) Context, activeWhen=ActivePartExpression(org.eclipse.mylyn.internal.wikitext.ui.editor.MarkupEditor@5cea34e6), active=true, sourcePriority=1048576, participating=true]} vs {[ActionHandler(org.eclipse.ui.internal.editors.quickdiff.CompositeRevertAction@679cdfc3), for 'org.eclipse.ui.editors.quickdiff.revert', in PartImpl (org.eclipse.e4.ui.compatibility.editor) removeOnHide org.eclipse.mylyn.wikitext.ui.editor.markupEditor active activeOnClose (a.md) Context, activeWhen=ActivePartExpression(org.eclipse.mylyn.internal.wikitext.ui.editor.MarkupEditor@5cea34e6), active=true, sourcePriority=1048576, participating=true]} in: PartImpl (org.eclipse.e4.ui.compatibility.editor) removeOnHide org.eclipse.mylyn.wikitext.ui.editor.markupEditor active activeOnClose (a.md) Context at org.eclipse.ui.internal.handlers.LegacyHandlerService$HandlerSelectionFunction.compute(LegacyHandlerService.java:143) at org.eclipse.e4.core.internal.contexts.ValueComputation.get(ValueComputation.java:70) at org.eclipse.e4.core.internal.contexts.EclipseContext.internalGet(EclipseContext.java:265) at org.eclipse.e4.core.internal.contexts.EclipseContext.get(EclipseContext.java:230) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.lookUpHandler(HandlerServiceImpl.java:99) at org.eclipse.ui.internal.handlers.E4HandlerProxy.handlerChanged(E4HandlerProxy.java:115) at org.eclipse.core.commands.AbstractHandler.fireHandlerChanged(AbstractHandler.java:77) at org.eclipse.jface.commands.ActionHandler.lambda$0(ActionHandler.java:84) at org.eclipse.jface.action.AbstractAction.firePropertyChange(AbstractAction.java:52) at org.eclipse.jface.action.AbstractAction.firePropertyChange(AbstractAction.java:75) at org.eclipse.jface.action.Action.setEnabled(Action.java:541) at org.eclipse.ui.internal.editors.quickdiff.CompositeRevertAction.update(CompositeRevertAction.java:71) at org.eclipse.ui.internal.editors.quickdiff.CompositeRevertAction.selectionChanged(CompositeRevertAction.java:80) at org.eclipse.jface.text.TextViewer.firePostSelectionChanged(TextViewer.java:2720) at org.eclipse.jface.text.TextViewer.firePostSelectionChanged(TextViewer.java:2650) at org.eclipse.jface.text.TextViewer$2.run(TextViewer.java:2629) at org.eclipse.swt.widgets.Display.runTimer(Display.java:4170) at org.eclipse.swt.widgets.Display.messageProc(Display.java:3291) at org.eclipse.swt.internal.win32.OS.DispatchMessage(Native Method) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3658) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1151) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1042) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:152) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:639) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:546) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:143) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:109) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:439) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:271) 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:651) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:588) at org.eclipse.equinox.launcher.Main.run(Main.java:1459) at org.eclipse.equinox.launcher.Main.main(Main.java:1432)
Seeing this error when I create a .md file and edit it (using the main branch) using the Mylyn-Runtime launch:
java.lang.IllegalStateException: Conflicting handlers: {[ActionHandler(org.eclipse.ui.internal.editors.quickdiff.CompositeRevertAction@679cdfc3), for 'org.eclipse.ui.editors.quickdiff.revert', in PartImpl (org.eclipse.e4.ui.compatibility.editor) removeOnHide org.eclipse.mylyn.wikitext.ui.editor.markupEditor active activeOnClose (a.md) Context, activeWhen=ActivePartExpression(org.eclipse.mylyn.internal.wikitext.ui.editor.MarkupEditor@5cea34e6), active=true, sourcePriority=1048576, participating=true]} vs {[ActionHandler(org.eclipse.ui.internal.editors.quickdiff.CompositeRevertAction@679cdfc3), for 'org.eclipse.ui.editors.quickdiff.revert', in PartImpl (org.eclipse.e4.ui.compatibility.editor) removeOnHide org.eclipse.mylyn.wikitext.ui.editor.markupEditor active activeOnClose (a.md) Context, activeWhen=ActivePartExpression(org.eclipse.mylyn.internal.wikitext.ui.editor.MarkupEditor@5cea34e6), active=true, sourcePriority=1048576, participating=true]} in: PartImpl (org.eclipse.e4.ui.compatibility.editor) removeOnHide org.eclipse.mylyn.wikitext.ui.editor.markupEditor active activeOnClose (a.md) Context at org.eclipse.ui.internal.handlers.LegacyHandlerService$HandlerSelectionFunction.compute(LegacyHandlerService.java:143) at org.eclipse.e4.core.internal.contexts.ValueComputation.get(ValueComputation.java:70) at org.eclipse.e4.core.internal.contexts.EclipseContext.internalGet(EclipseContext.java:265) at org.eclipse.e4.core.internal.contexts.EclipseContext.get(EclipseContext.java:230) at org.eclipse.e4.core.commands.internal.HandlerServiceImpl.lookUpHandler(HandlerServiceImpl.java:99) at org.eclipse.ui.internal.handlers.E4HandlerProxy.handlerChanged(E4HandlerProxy.java:115) at org.eclipse.core.commands.AbstractHandler.fireHandlerChanged(AbstractHandler.java:77) at org.eclipse.jface.commands.ActionHandler.lambda$0(ActionHandler.java:84) at org.eclipse.jface.action.AbstractAction.firePropertyChange(AbstractAction.java:52) at org.eclipse.jface.action.AbstractAction.firePropertyChange(AbstractAction.java:75) at org.eclipse.jface.action.Action.setEnabled(Action.java:541) at org.eclipse.ui.internal.editors.quickdiff.CompositeRevertAction.update(CompositeRevertAction.java:71) at org.eclipse.ui.internal.editors.quickdiff.CompositeRevertAction.selectionChanged(CompositeRevertAction.java:80) at org.eclipse.jface.text.TextViewer.firePostSelectionChanged(TextViewer.java:2720) at org.eclipse.jface.text.TextViewer.firePostSelectionChanged(TextViewer.java:2650) at org.eclipse.jface.text.TextViewer$2.run(TextViewer.java:2629) at org.eclipse.swt.widgets.Display.runTimer(Display.java:4170) at org.eclipse.swt.widgets.Display.messageProc(Display.java:3291) at org.eclipse.swt.internal.win32.OS.DispatchMessage(Native Method) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3658) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1151) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1042) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:152) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:639) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:546) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:173) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:152) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:208) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:143) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:109) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:439) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:271) 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:651) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:588) at org.eclipse.equinox.launcher.Main.run(Main.java:1459) at org.eclipse.equinox.launcher.Main.main(Main.java:1432)