Fix bug when trying to set keyboard shortcuts for the viewer with a translated calibre interface. Also possible workarounf for cover flow related crash on OS X

src/calibre/gui2/cover_flow.py

@@ -57,7 +57,13 @@ if pictureflow is not None:
             return self.model.count()
 
         def caption(self, index):
-            return self.model.title(index)
+            try:
+                ans = self.model.title(index)
+                if not ans:
+                    ans = ''
+            except:
+                ans = ''
+            return ans
 
         def reset(self):
             self.emit(SIGNAL('dataChanged()'))

src/calibre/gui2/shortcuts.py

@@ -152,9 +152,9 @@ class Delegate(QStyledItemDelegate):
 
 class Shortcuts(QAbstractListModel):
 
-    TEMPLATE = '''
+    TEMPLATE = u'''
     <p><b>{0}</b><br>
-    Keys: <code>{1}</code></p>
+    {2}: <code>{1}</code></p>
     '''
 
     def __init__(self, shortcuts, config_file_base_name, parent=None):
@@ -212,7 +212,7 @@ class Shortcuts(QAbstractListModel):
         key = self.order[row]
         if role == Qt.DisplayRole:
             return QVariant(self.TEMPLATE.format(self.descriptions[key],
-                    _(' or ').join(self.get_shortcuts(key))))
+                    _(' or ').join(self.get_shortcuts(key)), _('Keys')))
         if role == Qt.ToolTipRole:
             return QVariant(_('Double click to change'))
         if role == DEFAULTS:

src/calibre/gui2/ui.py

@@ -533,8 +533,6 @@ class Main(MainWindow, Ui_MainWindow, DeviceGUI):
             if not config['separate_cover_flow']:
                 self.library.layout().addWidget(self.cover_flow)
             self.cover_flow.currentChanged.connect(self.sync_listview_to_cf)
-            #self.connect(self.cover_flow, SIGNAL('itemActivated(int)'),
-            #             self.show_book_info)
             self.connect(self.status_bar.cover_flow_button,
                          SIGNAL('toggled(bool)'), self.toggle_cover_flow)
             self.connect(self.cover_flow, SIGNAL('stop()'),
@@ -758,7 +756,6 @@ class Main(MainWindow, Ui_MainWindow, DeviceGUI):
                     sm.select(index, sm.ClearAndSelect|sm.Rows)
                     self.library_view.setCurrentIndex(index)
         except:
-            #raise
             pass