Replace listview's binary "Case Insensitive Sort" option with 3 mutually exclusive options:

  1. Unicode based (AB...ab)
  2. Unicode based, case insensitive (aAbB)
  2. Locale based

This resolves issue #252.

Signed-off-by: Vincent Reher <tde@4reher.org>

15 files changed, 204 insertions, 40 deletions

diff --git a/konqueror/listview/konq_detailedlistview.rc b/konqueror/listview/konq_detailedlistview.rc
index 79059c6d4..06c9bc318 100644
--- a/konqueror/listview/konq_detailedlistview.rc
+++ b/konqueror/listview/konq_detailedlistview.rc
@@ -1,5 +1,5 @@
 <!DOCTYPE kpartgui SYSTEM "kpartgui.dtd">
-<kpartgui name="KonqDetailedListView" version="12">
+<kpartgui name="KonqDetailedListView" version="13">
 <MenuBar>
  <Menu name="edit"><text>&amp;Edit</text>
    <Menu name="selection"><text>Selection</text>
@@ -24,12 +24,14 @@
   </Menu>
   <Separator/>
   <Action name="show_dot"/>
-  <Menu name="sort"><text>Sort</text>
+  <Menu name="sort"><text>&amp;Sort</text>
+    <Action name="order_unicode_based"/>
+    <Action name="order_unicode_based_case_insensitive"/>
+    <Action name="order_locale_based"/>
+    <Separator/>
     <Action name="group_directories_first"/>
     <Action name="group_hidden_first"/>
     <Separator/>
-    <Action name="sort_caseinsensitive"/>
-    <Separator/>
     <Action name="alternate_sort_order"/>
     <Action name="reverse_sort_order"/>
   </Menu>
diff --git a/konqueror/listview/konq_infolistview.rc b/konqueror/listview/konq_infolistview.rc
index 451eb5785..60f511b1f 100644
--- a/konqueror/listview/konq_infolistview.rc
+++ b/konqueror/listview/konq_infolistview.rc
@@ -1,5 +1,5 @@
 <!DOCTYPE kpartgui SYSTEM "kpartgui.dtd">
-<kpartgui name="KonqInfoListView" version="13">
+<kpartgui name="KonqInfoListView" version="14">
 <MenuBar>
  <Menu name="edit"><text>&amp;Edit</text>
    <Menu name="selection"><text>Selection</text>
@@ -24,12 +24,14 @@
   </Menu>
   <Separator/>
   <Action name="show_dot"/>
-  <Menu name="sort"><text>Sort</text>
+  <Menu name="sort"><text>&amp;Sort</text>
+    <Action name="order_unicode_based"/>
+    <Action name="order_unicode_based_case_insensitive"/>
+    <Action name="order_locale_based"/>
+    <Separator/>
     <Action name="group_directories_first"/>
     <Action name="group_hidden_first"/>
     <Separator/>
-    <Action name="sort_caseinsensitive"/>
-    <Separator/>
     <Action name="alternate_sort_order"/>
     <Action name="reverse_sort_order"/>
   </Menu>
diff --git a/konqueror/listview/konq_listview.cpp b/konqueror/listview/konq_listview.cpp
index f8307e84c..5a06068ca 100644
--- a/konqueror/listview/konq_listview.cpp
+++ b/konqueror/listview/konq_listview.cpp
@@ -48,6 +48,8 @@
 #include <unistd.h>
 #include <kinstance.h>
 
+#include <konq_sort_constants.h>
+
 KonqListViewFactory::KonqListViewFactory()
 {
   s_instance = 0;
@@ -929,19 +931,50 @@ void KonqListView::setupActions()
 
   m_paShowDot = new TDEToggleAction( i18n( "Show &Hidden Files" ), 0, this, TQT_SLOT( slotShowDot() ), actionCollection(), "show_dot" );
 //  m_paShowDot->setCheckedState(i18n("Hide &Hidden Files"));
+
   m_paCaseInsensitive = new TDEToggleAction(i18n("Case Insensitive Sort"), 0, this, TQT_SLOT(slotCaseInsensitive()),actionCollection(), "sort_caseinsensitive" );
 
   m_paSortAlternate = new TDEAction( i18n( "&Alternate Sort Order" ), CTRL+Key_S, this,
-     TQT_SLOT( slotSortAlternate() ), actionCollection(), "alternate_sort_order");
+    TQT_SLOT( slotSortAlternate() ), actionCollection(), "alternate_sort_order");
+  m_paSortAlternate->setToolTip( i18n( "Sort by PREVIOUS sort column" ) );
   m_paSortReverse = new TDEAction( i18n( "&Reverse Sort Order" ), CTRL+Key_R, this,
     TQT_SLOT( slotSortReverse() ), actionCollection(), "reverse_sort_order");
-
-  m_paDisplayDirectoriesFirst = new TDEToggleAction( i18n("Group &Directories First"), 0, this,
+  m_paSortReverse->setToolTip( i18n( "Reverse sort order of current sort column" ) );
+
+  /*
+     Build View->Sort submenu interface to properties
+     SortOrder, SortDirsFirst & SortHiddenFirst
+  */
+  TextSortOrder initialOrder = m_pProps->getSortOrder();
+
+  m_paOrderUnicodeUnmodified = new TDEToggleAction( i18n( "&Unicode based" ), ALT+Key_1, this,
+    TQT_SLOT( slotOrderUnicodeUnmodified() ), actionCollection(), "order_unicode_based" );
+  m_paOrderUnicodeUnmodified->setToolTip( i18n( "Strict numeric Unicode based order" ) );
+  m_paOrderUnicodeUnmodified->setChecked( initialOrder == UNICODE_UNMODIFIED );
+
+  m_paOrderUnicodeCaseInsensitive = new TDEToggleAction( i18n( "Unicode based, &case insensitive" ), ALT+Key_2, this,
+    TQT_SLOT( slotOrderUnicodeCaseInsensitive() ), actionCollection(), "order_unicode_based_case_insensitive" );
+  m_paOrderUnicodeCaseInsensitive->setToolTip( i18n( "Unicode based order but with lower/upper case ASCII letters adjacent" ) );
+  m_paOrderUnicodeCaseInsensitive->setChecked(initialOrder == UNICODE_CASEINSENSITIVE);
+
+  m_paOrderLocale = new TDEToggleAction( i18n( "&Locale based" ), ALT+Key_3, this,
+    TQT_SLOT( slotOrderLocale() ), actionCollection(), "order_locale_based" );
+  m_paOrderLocale->setToolTip( i18n( "Locale based order, usually \"friendly\"" ) );
+  m_paOrderLocale->setChecked(initialOrder == LOCALE_UNMODIFIED);
+
+  // Convert above 3 checkbox menu items into single 3-way radio button menu item
+  m_paOrderUnicodeUnmodified->setExclusiveGroup( "sortOrder" );
+  m_paOrderUnicodeCaseInsensitive->setExclusiveGroup( "sortOrder" );
+  m_paOrderLocale->setExclusiveGroup( "sortOrder" );
+
+  m_paDisplayDirectoriesFirst = new TDEToggleAction( i18n("Group &Directories First"), CTRL+SHIFT+Key_F, this,
     TQT_SLOT(slotToggleDisplayDirectoriesFirst()), actionCollection(), "group_directories_first");
-  m_paDisplayDirectoriesFirst->setChecked(m_pProps->isHiddenFirst());
+  m_paDisplayDirectoriesFirst->setToolTip( i18n( "Always display directories before non-directories" ) );
+  m_paDisplayDirectoriesFirst->setChecked(m_pProps->isDirsFirst());
 
-  m_paDisplayHiddenFirst = new TDEToggleAction( i18n("Group &Hidden First"), 0, this,
+  m_paDisplayHiddenFirst = new TDEToggleAction( i18n("Group &Hidden First"), CTRL+SHIFT+Key_H, this,
     TQT_SLOT(slotToggleDisplayHiddenFirst()), actionCollection(), "group_hidden_first");
+  m_paDisplayHiddenFirst->setToolTip( i18n( "Always display hidden files before non-hidden files" ) );
   m_paDisplayHiddenFirst->setChecked(m_pProps->isHiddenFirst());
 
   newIconSize( TDEIcon::SizeSmall /* default size */ );
@@ -955,6 +988,32 @@ void KonqListView::slotSelectionChanged()
 //  m_paInvertSelection->setEnabled( itemSelected );
 }
 
-#include "konq_listview.moc"
+void KonqListView::slotOrderUnicodeUnmodified()
+{
+  TextSortOrder sortOrder = UNICODE_UNMODIFIED ;
+  kdDebug(1202) << "Setting name order = " << sortOrder << endl;
+  m_pProps->setSortOrder( sortOrder );
+  m_pListView->m_sortOrder = sortOrder;
+  m_pListView->sort();
+}
 
+void KonqListView::slotOrderUnicodeCaseInsensitive()
+{
+  TextSortOrder sortOrder = UNICODE_CASEINSENSITIVE;
+  kdDebug(1202) << "Setting name order = " << sortOrder << endl;
+  m_pProps->setSortOrder( sortOrder );
+  m_pListView->m_sortOrder = sortOrder;
+  m_pListView->sort();
+}
+
+void KonqListView::slotOrderLocale()
+{
+  TextSortOrder sortOrder = LOCALE_UNMODIFIED;
+  kdDebug(1202) << "Setting name order = " << sortOrder << endl;
+  m_pProps->setSortOrder( sortOrder );
+  m_pListView->m_sortOrder = sortOrder;
+  m_pListView->sort();
+}
+
+#include "konq_listview.moc"
 
diff --git a/konqueror/listview/konq_listview.h b/konqueror/listview/konq_listview.h
index 666ae7743..fc72f6e87 100644
--- a/konqueror/listview/konq_listview.h
+++ b/konqueror/listview/konq_listview.h
@@ -130,8 +130,12 @@ protected slots:
   void slotSaveColumnWidths();  // delayed
   void slotHeaderClicked(int sec);
 
+  void slotOrderUnicodeUnmodified();
+  void slotOrderUnicodeCaseInsensitive();
+  void slotOrderLocale();
   void slotToggleDisplayDirectoriesFirst();
   void slotToggleDisplayHiddenFirst();
+
   void slotSortAlternate();
   void slotSortReverse();
 
@@ -197,6 +201,10 @@ private:
   TDEToggleAction *m_paShowPermissions;
   TDEToggleAction *m_paShowURL;
 
+  TDEToggleAction *m_paOrderUnicodeUnmodified;
+  TDEToggleAction *m_paOrderUnicodeCaseInsensitive;
+  TDEToggleAction *m_paOrderLocale;
+
   TDEToggleAction *m_paDisplayDirectoriesFirst;
   TDEToggleAction *m_paDisplayHiddenFirst;
 };
diff --git a/konqueror/listview/konq_listviewitems.cpp b/konqueror/listview/konq_listviewitems.cpp
index cf4322ef0..1766a0b0b 100644
--- a/konqueror/listview/konq_listviewitems.cpp
+++ b/konqueror/listview/konq_listviewitems.cpp
@@ -19,6 +19,7 @@
 
 #include "konq_listview.h"
 #include <konq_settings.h>
+#include "konq_string_compare.h"
 #include <kdebug.h>
 #include <tdelocale.h>
 #include <assert.h>
@@ -303,11 +304,10 @@ int KonqBaseListViewItem::compare( TQListViewItem* item, int col, bool ascending
          break;
       }
    }
-   if ( m_pListViewWidget->caseInsensitiveSort() )
-       return text( col ).lower().localeAwareCompare( k->text( col ).lower() );
-   else {
-       return m_pListViewWidget->m_pSettings->caseSensitiveCompare( text( col ), k->text( col ) );
-   }
+
+   /* If we reach here, we are comparing text columns (e.g file name). */
+
+   return stringCompare( m_pListViewWidget->m_sortOrder, text( col ), k->text( col ) );
 }
 
 void KonqListViewItem::paintCell( TQPainter *_painter, const TQColorGroup & _cg, int _column, int _width, int _alignment )
diff --git a/konqueror/listview/konq_listviewwidget.cpp b/konqueror/listview/konq_listviewwidget.cpp
index 4c89f529d..ef70fe949 100644
--- a/konqueror/listview/konq_listviewwidget.cpp
+++ b/konqueror/listview/konq_listviewwidget.cpp
@@ -100,6 +100,7 @@ KonqBaseListViewWidget::KonqBaseListViewWidget( KonqListView *parent, TQWidget *
    ,m_bAscending(true)
    ,m_itemFound(false)
    ,m_restored(false)
+   ,m_sortOrder(0)
    ,m_filenameColumn(0)
    ,m_itemToGoTo("")
    ,m_backgroundTimer(0)
@@ -1211,11 +1212,7 @@ bool KonqBaseListViewWidget::openURL( const KURL &url )
    {
       m_pBrowserView->newIconSize( m_pBrowserView->m_pProps->iconSize() );
       m_pBrowserView->m_paShowDot->setChecked( m_pBrowserView->m_pProps->isShowingDotFiles() );
-      if ( m_pBrowserView->m_paCaseInsensitive->isChecked() != m_pBrowserView->m_pProps->isCaseInsensitiveSort() ) {
-          m_pBrowserView->m_paCaseInsensitive->setChecked( m_pBrowserView->m_pProps->isCaseInsensitiveSort() );
-          // This is in case openURL returned all items synchronously.
-          sort();
-      }
+      m_sortOrder = m_pBrowserView->m_pProps->getSortOrder();
 
       // It has to be "viewport()" - this is what KonqDirPart's slots act upon,
       // and otherwise we get a color/pixmap in the square between the scrollbars.
@@ -1571,11 +1568,6 @@ void KonqBaseListViewWidget::slotUpdateBackground()
    }
 }
 
-bool KonqBaseListViewWidget::caseInsensitiveSort() const
-{
-    return m_pBrowserView->m_pProps->isCaseInsensitiveSort();
-}
-
 // based on isExecuteArea from tdelistview.cpp
 int KonqBaseListViewWidget::executeArea( TQListViewItem *_item )
 {
diff --git a/konqueror/listview/konq_listviewwidget.h b/konqueror/listview/konq_listviewwidget.h
index 613f012b3..a8a06408b 100644
--- a/konqueror/listview/konq_listviewwidget.h
+++ b/konqueror/listview/konq_listviewwidget.h
@@ -137,7 +137,6 @@ public:
 
    void setAscending( bool b ) { m_bAscending = b; }
    bool ascending() const { return m_bAscending; }
-   bool caseInsensitiveSort() const;
 
    virtual void paintEmptyArea( TQPainter *p, const TQRect &r );
 
@@ -260,6 +259,8 @@ protected:
    bool m_itemFound:1;
    bool m_restored:1;
 
+   TextSortOrder m_sortOrder;
+
    int m_filenameColumn;
    int m_filenameColumnWidth;
 
diff --git a/konqueror/listview/konq_textview.rc b/konqueror/listview/konq_textview.rc
index 20b20f451..e29a0293b 100644
--- a/konqueror/listview/konq_textview.rc
+++ b/konqueror/listview/konq_textview.rc
@@ -1,5 +1,5 @@
 <!DOCTYPE kpartgui SYSTEM "kpartgui.dtd">
-<kpartgui name="KonqTextView" version="6">
+<kpartgui name="KonqTextView" version="7">
 <MenuBar>
  <Menu name="edit"><text>&amp;Edit</text>
     <Menu name="selection"><text>Selection</text>
@@ -13,12 +13,14 @@
 </Menu>
  <Menu name="view"><text>&amp;View</text>
   <Action name="show_dot" />
-  <Menu name="sort"><text>Sort</text>
+  <Menu name="sort"><text>&amp;Sort</text>
+    <Action name="order_unicode_based"/>
+    <Action name="order_unicode_based_case_insensitive"/>
+    <Action name="order_locale_based"/>
+    <Separator/>
     <Action name="group_directories_first"/>
     <Action name="group_hidden_first"/>
     <Separator/>
-    <Action name="sort_caseinsensitive"/>
-    <Separator/>
     <Action name="alternate_sort_order"/>
     <Action name="reverse_sort_order"/>
   </Menu>
diff --git a/konqueror/listview/konq_treeview.rc b/konqueror/listview/konq_treeview.rc
index 711f267be..9ef045785 100644
--- a/konqueror/listview/konq_treeview.rc
+++ b/konqueror/listview/konq_treeview.rc
@@ -1,5 +1,5 @@
 <!DOCTYPE kpartgui SYSTEM "kpartgui.dtd">
-<kpartgui name="KonqTreeView" version="11">
+<kpartgui name="KonqTreeView" version="12">
 <MenuBar>
  <Menu name="edit"><text>&amp;Edit</text>
    <Menu name="selection"><text>Selection</text>
@@ -24,12 +24,14 @@
   </Menu>
   <Separator/>
   <Action name="show_dot"/>
-  <Menu name="sort"><text>Sort</text>
+  <Menu name="sort"><text>&amp;Sort</text>
+    <Action name="order_unicode_based"/>
+    <Action name="order_unicode_based_case_insensitive"/>
+    <Action name="order_locale_based"/>
+    <Separator/>
     <Action name="group_directories_first"/>
     <Action name="group_hidden_first"/>
     <Separator/>
-    <Action name="sort_caseinsensitive"/>
-    <Separator/>
     <Action name="alternate_sort_order"/>
     <Action name="reverse_sort_order"/>
   </Menu>
diff --git a/libkonq/CMakeLists.txt b/libkonq/CMakeLists.txt
index e774a81bb..c1780780d 100644
--- a/libkonq/CMakeLists.txt
+++ b/libkonq/CMakeLists.txt
@@ -43,6 +43,7 @@ install( FILES
     konq_historymgr.h konq_historycomm.h konq_pixmapprovider.h
     kivdirectoryoverlay.h kivfreespaceoverlay.h konq_faviconmgr.h
     konq_xmlguiclient.h konqbookmarkmanager.h konq_filetip.h
+    konq_sort_constants.h konq_string_compare.h
   DESTINATION ${INCLUDE_INSTALL_DIR} )
 
 
diff --git a/libkonq/Makefile.am b/libkonq/Makefile.am
index 3290c3e85..3c3897155 100644
--- a/libkonq/Makefile.am
+++ b/libkonq/Makefile.am
@@ -52,7 +52,8 @@ include_HEADERS = konq_popupmenu.h knewmenu.h \
     konq_pixmapprovider.h \
     kivdirectoryoverlay.h \
     kivfreespaceoverlay.h \
-    konq_faviconmgr.h konq_xmlguiclient.h konqbookmarkmanager.h konq_filetip.h
+    konq_faviconmgr.h konq_xmlguiclient.h konqbookmarkmanager.h konq_filetip.h \
+    konq_sort_constants.h konq_string_compare.h
 
 
 if include_ARTS
diff --git a/libkonq/konq_propsview.cpp b/libkonq/konq_propsview.cpp
index af7a65eae..f72aee191 100644
--- a/libkonq/konq_propsview.cpp
+++ b/libkonq/konq_propsview.cpp
@@ -34,6 +34,8 @@
 
 #include <ksimpleconfig.h>
 
+#include "konq_sort_constants.h"
+
 static TQPixmap wallpaperPixmap( const TQString & _wallpaper )
 {
     TQString key = "wallpapers/";
@@ -65,10 +67,11 @@ static TQPixmap wallpaperPixmap( const TQString & _wallpaper )
 struct KonqPropsView::Private
 {
    TQStringList* previewsToShow;
+   TextSortOrder textSortOrder;
    bool previewsEnabled:1;
    bool caseInsensitiveSort:1;
-   bool hiddenfirst:1;
    bool dirsfirst:1;
+   bool hiddenfirst:1;
    bool descending:1;
    TQString sortcriterion;
 };
@@ -91,6 +94,7 @@ KonqPropsView::KonqPropsView( TDEInstance * instance, KonqPropsView * defaultPro
   m_iIconSize = config->readNumEntry( "IconSize", 0 );
   m_iItemTextPos = config->readNumEntry( "ItemTextPos", TQIconView::Bottom );
   d->sortcriterion = config->readEntry( "SortingCriterion", "sort_nci" );
+  d->textSortOrder = (TextSortOrder) config->readNumEntry( "TextSortOrder", 1 );
   d->dirsfirst = config->readBoolEntry( "SortDirsFirst", true );
   d->hiddenfirst = config->readBoolEntry( "SortHiddenFirst", true );
   d->descending = config->readBoolEntry( "SortDescending", false );
@@ -140,6 +144,11 @@ bool KonqPropsView::isCaseInsensitiveSort() const
    return d->caseInsensitiveSort;
 }
 
+TextSortOrder KonqPropsView::getSortOrder() const
+{
+   return d->textSortOrder;
+}
+
 bool KonqPropsView::isDirsFirst() const
 {
    return d->dirsfirst;
@@ -206,6 +215,7 @@ bool KonqPropsView::enterDir( const KURL & dir )
     m_iIconSize = m_defaultProps->iconSize();
     m_iItemTextPos = m_defaultProps->itemTextPos();
     d->sortcriterion = m_defaultProps->sortCriterion();
+    d->textSortOrder = m_defaultProps->getSortOrder();
     d->dirsfirst = m_defaultProps->isDirsFirst();
     d->hiddenfirst = m_defaultProps->isHiddenFirst();
     d->descending = m_defaultProps->isDescending();
@@ -226,6 +236,7 @@ bool KonqPropsView::enterDir( const KURL & dir )
     m_iIconSize = config->readNumEntry( "IconSize", m_iIconSize );
     m_iItemTextPos = config->readNumEntry( "ItemTextPos", m_iItemTextPos );
     d->sortcriterion = config->readEntry( "SortingCriterion" , d->sortcriterion );
+    d->textSortOrder = (TextSortOrder) config->readNumEntry( "TextSortOrder", d->textSortOrder );
     d->dirsfirst = config->readBoolEntry( "SortDirsFirst", d->dirsfirst );
     d->hiddenfirst = config->readBoolEntry( "SortHiddenFirst", d->hiddenfirst );
     d->descending = config->readBoolEntry( "SortDescending", d->descending );
@@ -324,6 +335,20 @@ void KonqPropsView::setSortCriterion( const TQString &criterion )
     }
 }
 
+void KonqPropsView::setSortOrder( TextSortOrder order)
+{
+    d->textSortOrder = order;
+    if ( m_defaultProps && !m_bSaveViewPropertiesLocally ) {
+        m_defaultProps->setSortOrder( order );
+    }
+    else if (currentConfig())
+    {
+        TDEConfigGroupSaver cgs(currentConfig(), currentGroup());
+        currentConfig()->writeEntry( "TextSortOrder", d->textSortOrder );
+        currentConfig()->sync();
+    }
+}
+
 void KonqPropsView::setDirsFirst( bool first)
 {
     d->dirsfirst = first;
diff --git a/libkonq/konq_propsview.h b/libkonq/konq_propsview.h
index 84ffcf029..132c53a55 100644
--- a/libkonq/konq_propsview.h
+++ b/libkonq/konq_propsview.h
@@ -26,6 +26,8 @@
 #include <kurl.h>
 #include <libkonq_export.h>
 
+#include "konq_sort_constants.h"
+
 class TDEInstance;
 class TDEConfigBase;
 class TDEConfig;
@@ -90,6 +92,9 @@ public:
   void setSortCriterion( const TQString &criterion );
   const TQString& sortCriterion() const;
 
+  void setSortOrder( TextSortOrder order);
+  TextSortOrder getSortOrder() const;
+
   void setDirsFirst ( bool first );
   bool isDirsFirst() const;
 
diff --git a/libkonq/konq_sort_constants.h b/libkonq/konq_sort_constants.h
new file mode 100644
index 000000000..f6c695b19
--- /dev/null
+++ b/libkonq/konq_sort_constants.h
@@ -0,0 +1,13 @@
+#ifndef KONQ_SORT_CONSTANTS_H
+#define KONQ_SORT_CONSTANTS_H
+
+typedef unsigned short TextSortOrder;
+  // Can't use name 'SortOrder' because that's part of TQt
+
+enum {
+  UNICODE_UNMODIFIED      = 0,
+  LOCALE_UNMODIFIED       = 1,
+  UNICODE_CASEINSENSITIVE = 2,
+} TextSortOrders;
+
+#endif // KONQ_SORT_CONSTANTS_H
diff --git a/libkonq/konq_string_compare.h b/libkonq/konq_string_compare.h
new file mode 100644
index 000000000..8d17d409f
--- /dev/null
+++ b/libkonq/konq_string_compare.h
@@ -0,0 +1,51 @@
+#ifndef KONQ_STRING_COMPARE_H
+#define KONQ_STRING_COMPARE_H
+
+#include "konq_sort_constants.h"
+
+static inline int stringCompare(
+  const TextSortOrder sortorder,
+  const TQString& a,
+  const TQString& b
+)
+{
+  // Our caller probably determined sortorder from KonqPropsView::getSortOrder()
+  // but we have a reasonable fallback position for bogus values.
+
+  switch(sortorder) {
+
+    case UNICODE_UNMODIFIED:
+      /*
+       * Strictly character code(point) numeric comparison as defined
+       * by the Unicode Standard that is backward compatible with the
+       * the ASCII standard.
+   . */
+      return a.compare( b );
+      break;
+
+    case UNICODE_CASEINSENSITIVE:
+      /*
+       * This is the traditional "case-insensitive" variation on character
+       * code order that ensures that ASCII lowercase and uppercase alphabetic
+       * characters are are grouped together instead of being separated by
+       * non-alphabetic ASCII characters [ \ ] ^ _ `
+      */
+      return a.lower().compare( b.lower() );
+      break;
+
+    case LOCALE_UNMODIFIED:
+      /*
+       * This is the pure locale-aware comparison as defined by ICU.
+       * Note: if LC_COLLATE == 'C' or 'Posix', this will produce same
+       * result as UNICODE_UNMODIFIED.
+      */
+      return a.localeAwareCompare( b );
+      break;
+
+    default: // Treat as UNICODE_UNMODIFIED
+      return a.compare( b );
+      break;
+  }
+}
+
+#endif // KONQ_STRING_COMPARE_H