Handling left-tab keypresses on Linux.

modules/juce_gui_basics/native/juce_linux_Windowing.cpp

@@ -1372,7 +1372,7 @@ public:
         const ModifierKeys oldMods (currentModifiers);
         bool keyPressed = false;
 
-        if ((sym & 0xff00) == 0xff00 || sym == XK_ISO_Left_Tab)
+        if ((sym & 0xff00) == 0xff00 || keyCode == XK_ISO_Left_Tab)
         {
             switch (sym)  // Translate keypad
             {
@@ -1431,6 +1431,11 @@ public:
                     keyCode &= 0xff;
                     break;
 
+                case XK_ISO_Left_Tab:
+                    keyPressed = true;
+                    keyCode = XK_Tab & 0xff;
+                    break;
+
                 default:
                     if (sym >= XK_F1 && sym <= XK_F16)
                     {