Bug 6410 File unchanged but dirtied by code assist
1122. Open a Java file. Place the cursor inside the left-most parenthesis of a method call. For example, consider "I" to be the cursor below: Object o = anotherObject.method(I); Press Ctrl-Space. The file is dirtied but not changed, and code assist does not appear. If code assist has nothing to suggest, it should not dirty the file.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/java/JavaCompletionProposal.java
package org.eclipse.jdt.internal.ui.text.java;
/*
 * (c) Copyright IBM Corp. 2000, 2001.
 * All Rights Reserved.
 */
 
import org.eclipse.jface.util.Assert;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.Point;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IImportContainer;
import org.eclipse.jdt.core.IImportDeclaration;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.ISourceRange;
import org.eclipse.jdt.core.IType;
import org.eclipse.jdt.core.JavaModelException;
import org.eclipse.jdt.internal.ui.JavaPlugin;
import org.eclipse.jdt.internal.corext.codemanipulation.ImportsStructure;
import org.eclipse.jdt.internal.ui.preferences.ImportOrganizePreferencePage;
import org.eclipse.jdt.internal.corext.util.JavaModelUtil;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jface.text.contentassist.ICompletionProposal;
import org.eclipse.jface.text.contentassist.ICompletionProposalExtension;
import org.eclipse.jface.text.contentassist.IContextInformation;
public class JavaCompletionProposal implements ICompletionProposal, ICompletionProposalExtension {