我在弄清楚如何覆盖命令时遇到了问题，具体而言：
Eclipse RCP中的org.eclipse.ui.edit.text.showInformation。
看起来像org.eclipse.ui.handlers延伸从不触发我的处理程序，控制台总是返回：
COMMANDS >>> execute >>> starting: id=org.eclipse.ui.edit.text.showInformation; event=ExecutionEvent(Command(org.eclipse.ui.edit.text.showInformation,Show Tooltip Description,
Displays information for the current caret location in a focused hover,
Category(org.eclipse.ui.category.textEditor,Text Editing,Text Editing Commands,true),
org.eclipse.ui.internal.WorkbenchHandlerServiceHandler@325c29d9,
,,true),{},null,org.eclipse.e4.core.commands.internal.HandlerServiceImpl$ExecutionContexts@9a49ddd)
COMMANDS >>> execute >>> success: id=org.eclipse.ui.edit.text.showInformation; returnValue=null
CONTEXTS >>> [org.eclipse.ui.actionSet.keyBindings, org.eclipse.ui.edit.text.actionSet.annotationNavigation, org.eclipse.ui.contexts.dialogAndWindow, org.eclipse.ui.edit.text.actionSet.convertLineDelimitersTo, org.eclipse.search.searchActionSet, org.eclipse.ui.edit.text.actionSet.navigation, org.eclipse.ui.cheatsheets.actionSet, org.eclipse.ui.NavigateActionSet, org.eclipse.ui.externaltools.ExternalToolsSet, org.eclipse.ui.contexts.window, org.eclipse.ui.actionSet.openFiles]
这真的闻起来像我没有做必要的事情（它总是转到AbstractTextEditor中的默认InformationDispatchAction）。
评论表明我没有org.eclipse.ui.textEditorScope，但是如何为执行处理程序添加上下文？