Bug 42587 Left over from content assist
M3 - set preference that content assist should overwrite - open content assist on some word so that the rest of the word is indicated to be overwritten - transfer focus to the content assist widget using TAB - Esc -> overwrite indication is still there
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/link/contentassist/CompletionProposalPopup2.java
}
		});
		
		return getErrorMessage();
	}
	
	/**
	 * Returns the completion proposal available at the given offset of the
	 * viewer's document. Delegates the work to the content assistant.
	 * 
	 * @param offset the offset
	 * @return the completion proposals available at this offset
	 */
	private ICompletionProposal[] computeProposals(int offset) {
		return fContentAssistant.computeCompletionProposals(fViewer, offset);
	}
	
	/**
	 * Returns the error message.
	 * 
	 * @return the error message
	 */
	private String getErrorMessage() {
		return fContentAssistant.getErrorMessage();
	}
	
	/**
	 * Creates the proposal selector.
	 */
	private void createProposalSelector() {