Bug 40772 [plan item] Smart tab on empty lines
When having the caret on an empty line, pressing tab cleans up the line and sets the caret it the right indentation column.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/ui/PreferenceConstants.java
* cannot be resolved to valid SWT modifier bits.
	 * <p>
	 * Value is of type <code>String</code>.
	 * </p>
	 * 
	 * @see #EDITOR_BROWSER_LIKE_LINKS_KEY_MODIFIER
	 * @since 2.1.1
	 */
	public static final String EDITOR_BROWSER_LIKE_LINKS_KEY_MODIFIER_MASK= "browserLikeLinksKeyModifierMask"; 
	/**
	 * A named preference that controls disabling of the overwrite mode.
	 * <p>
	 * Value is of type <code>Boolean</code>.
	 * </p>
	 *
	 * @since 3.0
	 */	
	public static final String EDITOR_DISABLE_OVERWRITE_MODE= "disable_overwrite_mode"; 
	/**
	 * A named preference that controls the "smart semicolon" smart typing handler
	 * <p>
	 * Value is of type <code>Boolean</code>.
	 * </p>
	 *
	 * @since 3.0
	 */	
	public static final String EDITOR_SMART_SEMICOLON= "smart_semicolon"; 
	
	/**
	 * A named preference that controls the "smart opening brace" smart typing handler