Bug 100889 [Undo] - AbstractOperation toString() appends bogus comma
The toString() on AbstractOperation puts commas between undo contexts, and also puts one at the end. It looks pretty bogus in the operation history view. Should clean up to not add the very last comma.
bundles/org.eclipse.core.commands/src/org/eclipse/core/commands/operations/AbstractOperation.java
/*******************************************************************************
 * Copyright (c) 2005 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
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 * http://www.eclipse.org/legal/epl-v10.html
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 * Contributors:
 *     IBM Corporation - initial API and implementation
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package org.eclipse.core.commands.operations;