Bug 66923 [typing]Can delete word (Ctrl-Backspace) on read only file
When you open read-only java file, all editing functions are disabled except deleting with Ctrl-Backspace and Ctrl-Del, then it is imposible to save this file. On simple text file it works ok - it blocks all edditing functions (including Ctrl-Backspace). I am using build 200406111814
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitEditor.java
return;
		}
		
		if (provider.isDeleted(input) && original != null) {
			String message= JavaEditorMessages.getFormattedString("CompilationUnitEditor.warning.save.delete", new Object[] { original.getName() }); 
			dialog.setErrorMessage(null);
			dialog.setMessage(message, IMessageProvider.WARNING);
		}
			
		if (dialog.open() == Window.CANCEL) {
			if (progressMonitor != null)
				progressMonitor.setCanceled(true);
			return;
		}
			
		IPath filePath= dialog.getResult();
		if (filePath == null) {
			if (progressMonitor != null)
				progressMonitor.setCanceled(true);
			return;
		}
			
		IWorkspaceRoot workspaceRoot= ResourcesPlugin.getWorkspace().getRoot();
		IFile file= workspaceRoot.getFile(filePath);
		final IEditorInput newInput= new FileEditorInput(file);
		
		boolean success= false;
		try {
			
			provider.aboutToChange(newInput);