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
ExtendedTextEditorPreferenceConstants.initializeDefaultValues(store);
		
		store.setDefault(PreferenceConstants.EDITOR_SHOW_SEGMENTS, false);
		
		store.setDefault(PreferenceConstants.LINK_PACKAGES_TO_EDITOR, false);
		store.setDefault(PreferenceConstants.LINK_TYPEHIERARCHY_TO_EDITOR, false);
		store.setDefault(PreferenceConstants.OPEN_TYPE_HIERARCHY, PreferenceConstants.OPEN_TYPE_HIERARCHY_IN_VIEW_PART);
		store.setDefault(PreferenceConstants.DOUBLE_CLICK, PreferenceConstants.DOUBLE_CLICK_EXPANDS);
		store.setDefault(PreferenceConstants.UPDATE_JAVA_VIEWS, PreferenceConstants.UPDATE_WHILE_EDITING);	
		
		store.setDefault(PreferenceConstants.LINK_BROWSING_PROJECTS_TO_EDITOR, true);
		store.setDefault(PreferenceConstants.LINK_BROWSING_PACKAGES_TO_EDITOR, true);
		store.setDefault(PreferenceConstants.LINK_BROWSING_TYPES_TO_EDITOR, true);
		store.setDefault(PreferenceConstants.LINK_BROWSING_MEMBERS_TO_EDITOR, true);
		
		store.setDefault(PreferenceConstants.APPEARANCE_COMPRESS_PACKAGE_NAMES, false);
		store.setDefault(PreferenceConstants.APPEARANCE_METHOD_RETURNTYPE, false);
		store.setDefault(PreferenceConstants.SHOW_CU_CHILDREN, true);
		store.setDefault(PreferenceConstants.APPEARANCE_OVERRIDE_INDICATOR, true);
		store.setDefault(PreferenceConstants.BROWSING_STACK_VERTICALLY, false);
		store.setDefault(PreferenceConstants.APPEARANCE_PKG_NAME_PATTERN_FOR_PKG_VIEW, ""); 
		store.setDefault(PreferenceConstants.APPEARANCE_FOLD_PACKAGES_IN_PACKAGE_EXPLORER, true);
		
		store.setDefault(PreferenceConstants.ORGIMPORTS_IMPORTORDER, "java;javax;org;com"); 
		store.setDefault(PreferenceConstants.ORGIMPORTS_ONDEMANDTHRESHOLD, 99);
		store.setDefault(PreferenceConstants.ORGIMPORTS_IGNORELOWERCASE, true);