Add keys alt+arrows to switch buffer

src/qweechat/input.py

@@ -48,8 +48,12 @@ class InputLineEdit(QtGui.QLineEdit):
         bar = self.scroll_widget.verticalScrollBar()
         if modifiers == QtCore.Qt.ControlModifier and key == QtCore.Qt.Key_PageUp:
             self.bufferSwitchPrev.emit()
+        elif modifiers == QtCore.Qt.AltModifier and key in (QtCore.Qt.Key_Left, QtCore.Qt.Key_Up):
+            self.bufferSwitchPrev.emit()
         elif modifiers == QtCore.Qt.ControlModifier and key == QtCore.Qt.Key_PageDown:
             self.bufferSwitchNext.emit()
+        elif modifiers == QtCore.Qt.AltModifier and key in (QtCore.Qt.Key_Right, QtCore.Qt.Key_Down):
+            self.bufferSwitchNext.emit()
         elif modifiers == QtCore.Qt.AltModifier and key == QtCore.Qt.Key_PageUp:
             bar.setValue(bar.value() - (bar.pageStep() / 10))
         elif modifiers == QtCore.Qt.AltModifier and key == QtCore.Qt.Key_PageDown: