Bug 133599 [FieldAssist] Left and right arrow keys should work with open proposals list
I20060328-0010, worked in M5 In the Find/Replace dialog, enable regex, then type something into the Find field and invoke content assist. Pressing the left or right arrow key now closes the proposals popup. The list should not be closed, but the caret should be moved and the proposals should be recalculated for the new caret position.
bundles/org.eclipse.jface/src/org/eclipse/jface/fieldassist/ContentProposalAdapter.java
*         filtering of the proposals shown. <code>FILTER_NONE</code>
	 *         specifies that no filtering will occur in the content proposal
	 *         list as keys are typed. <code>FILTER_CUMULATIVE</code>
	 *         specifies that the content of the popup will be filtered by a
	 *         string containing all the characters typed since the popup has
	 *         been open. <code>FILTER_CHARACTER</code> specifies the content
	 *         of the popup will be filtered by the most recently typed
	 *         character. The default is <code>FILTER_NONE</code>.
	 */
	public int getFilterStyle() {
		return filterStyle;
	}
	/**
	 * Set the integer style that indicates how keystrokes affect the content of
	 * the proposal popup while it is open.
	 * 
	 * @param filterStyle
	 *            a constant indicating how keystrokes in the proposal popup
	 *            affect filtering of the proposals shown.
	 *            <code>FILTER_NONE</code> specifies that no filtering will
	 *            occur in the content proposal list as keys are typed.
	 *            <code>FILTER_CUMULATIVE</code> specifies that the content of
	 *            the popup will be filtered by a string containing all the
	 *            characters typed since the popup has been open.
	 *            <code>FILTER_CHARACTER</code> specifies the content of the
	 *            popup will be filtered by the most recently typed character.
	 */
	public void setFilterStyle(int filterStyle) {
		this.filterStyle = filterStyle;
	}