#1178 compare view not working in mercurialeclipse commit

[Leo Shklovskii]

PyDev 1.5.9 - MercurialEclipse 1.6.0, Eclipse Galileo (3.5)

This is probably related to #3024222 however the stack trace is different. Double clicking on a .py file in MercurialEclipse's commit window gives the following in the error log:

org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.NullPointerException)
at org.eclipse.swt.SWT.error(SWT.java:3884)
at org.eclipse.swt.SWT.error(SWT.java:3799)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:137)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:3885)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3506)
at org.eclipse.jface.window.Window.runEventLoop(Window.java:825)
at org.eclipse.jface.window.Window.open(Window.java:801)
at com.vectrace.MercurialEclipse.menu.CommitHandler.run(CommitHandler.java:49)
at com.vectrace.MercurialEclipse.team.ActionCommit.run(ActionCommit.java:73)
at org.eclipse.ui.internal.PluginAction.runWithEvent(PluginAction.java:251)
at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584)
at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501)
at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1003)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3910)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3503)
at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2405)
at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2369)
at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2221)
at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:500)
at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:493)
at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:113)
at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:194)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:368)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:559)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:514)
at org.eclipse.equinox.launcher.Main.run(Main.java:1311)
Caused by: java.lang.NullPointerException
at org.python.pydev.editor.actions.FirstCharAction.createVerifyKeyListener(FirstCharAction.java:65)
at org.python.pydev.compare.PyMergeViewer.createSourceViewer(PyMergeViewer.java:129)
at org.eclipse.compare.contentmergeviewer.TextMergeViewer.createPart(TextMergeViewer.java:2446)
at org.eclipse.compare.contentmergeviewer.TextMergeViewer.createControls(TextMergeViewer.java:1914)
at org.eclipse.compare.contentmergeviewer.ContentMergeViewer.buildControl(ContentMergeViewer.java:840)
at org.eclipse.compare.contentmergeviewer.TextMergeViewer.<init>(TextMergeViewer.java:1484)
at org.python.pydev.compare.PyMergeViewer.<init>(PyMergeViewer.java:60)
at org.python.pydev.compare.PyContentViewerCreator.createViewer(PyContentViewerCreator.java:18)
at org.eclipse.compare.internal.ViewerDescriptor.createViewer(ViewerDescriptor.java:63)
at org.eclipse.compare.internal.CompareUIPlugin.getViewer(CompareUIPlugin.java:964)
at org.eclipse.compare.internal.CompareUIPlugin.findContentViewer(CompareUIPlugin.java:959)
at org.eclipse.compare.CompareUI.findContentViewer(CompareUI.java:330)
at org.eclipse.compare.CompareEditorInput.findContentViewer(CompareEditorInput.java:926)
at org.eclipse.compare.internal.CompareContentViewerSwitchingPane.getViewer(CompareContentViewerSwitchingPane.java:84)
at org.eclipse.compare.CompareViewerSwitchingPane.setInput(CompareViewerSwitchingPane.java:259)
at org.eclipse.compare.internal.CompareContentViewerSwitchingPane.setInput(CompareContentViewerSwitchingPane.java:132)
at org.eclipse.compare.CompareEditorInput.internalSetContentPaneInput(CompareEditorInput.java:817)
at org.eclipse.compare.CompareEditorInput.access$8(CompareEditorInput.java:815)
at org.eclipse.compare.CompareEditorInput$11.run(CompareEditorInput.java:755)
at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:70)
at org.eclipse.compare.CompareEditorInput.feed1(CompareEditorInput.java:749)
at org.eclipse.compare.CompareEditorInput.feedInput(CompareEditorInput.java:727)
at org.eclipse.compare.CompareEditorInput.createContents(CompareEditorInput.java:543)
at org.eclipse.compare.internal.CompareDialog.createDialogArea(CompareDialog.java:169)
at org.eclipse.jface.dialogs.Dialog.createContents(Dialog.java:760)
at org.eclipse.jface.window.Window.create(Window.java:431)
at org.eclipse.jface.dialogs.Dialog.create(Dialog.java:1089)
at org.eclipse.jface.window.Window.open(Window.java:790)
at org.eclipse.compare.internal.CompareDialog.open(CompareDialog.java:195)
at org.eclipse.compare.internal.CompareUIPlugin$3.run(CompareUIPlugin.java:1248)
at org.eclipse.compare.internal.CompareUIPlugin.syncExec(CompareUIPlugin.java:1258)
at org.eclipse.compare.internal.CompareUIPlugin.internalOpenDialog(CompareUIPlugin.java:1251)
at org.eclipse.compare.internal.CompareUIPlugin.openCompareDialog(CompareUIPlugin.java:542)
at org.eclipse.compare.CompareUI.openCompareDialog(CompareUI.java:211)
at com.vectrace.MercurialEclipse.utils.CompareUtils$2.run(CompareUtils.java:162)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:134)
... 34 more

eclipse.buildId=
java.version=1.6.0_20
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_US
Framework arguments: -product org.eclipse.epp.package.jee.product
Command-line arguments: -os win32 -ws win32 -arch x86 -product org.eclipse.epp.package.jee.product

Please let me know if there's some other way I can help troubleshoot or log this issue.