Clone text/icon as well when cloning tabs.

Closes #316.

qutebrowser/browser/commands.py

@@ -381,6 +381,10 @@ class CommandDispatcher:
         curtab = self._current_widget()
         tabbed_browser = self._tabbed_browser(window)
         newtab = tabbed_browser.tabopen(background=bg, explicit=True)
+        idx = tabbed_browser.indexOf(newtab)
+        tabbed_browser.setTabText(idx, curtab.title().replace('&', '&&'))
+        tabbed_browser.setTabIcon(idx, curtab.icon())
+        newtab.keep_icon = True
         history = qtutils.serialize(curtab.history())
         qtutils.deserialize(history, newtab.history())
         return newtab

qutebrowser/browser/webview.py

@@ -58,6 +58,8 @@ class WebView(QWebView):
         open_target: Where to open the next tab ("normal", "tab", "tab_bg")
         viewing_source: Whether the webview is currently displaying source
                         code.
+        keep_icon: Whether the (e.g. cloned) icon should not be cleared on page
+                   load.
         registry: The ObjectRegistry associated with this tab.
         tab_id: The tab ID of the view.
         _cur_url: The current URL (accessed via cur_url property).
@@ -101,6 +103,7 @@ class WebView(QWebView):
         self._force_open_target = None
         self._zoom = None
         self._has_ssl_errors = False
+        self.keep_icon = False
         self.init_neighborlist()
         cfg = objreg.get('config')
         cfg.changed.connect(self.init_neighborlist)

qutebrowser/mainwindow/tabbedbrowser.py

@@ -426,7 +426,10 @@ class TabbedBrowser(tabwidget.TabWidget):
             # We can get signals for tabs we already deleted...
             log.webview.debug("Got invalid tab {}!".format(tab))
             return
-        self.setTabIcon(idx, QIcon())
+        if tab.keep_icon:
+            tab.keep_icon = False
+        else:
+            self.setTabIcon(idx, QIcon())
         if idx == self.currentIndex():
             self._update_window_title()