--- a/QScintilla/Shell.py	Sat Nov 03 17:18:15 2018 +0100
+++ b/QScintilla/Shell.py	Sat Nov 03 20:04:41 2018 +0100
@@ -827,6 +827,9 @@
         """
         Private method to write the prompt.
         """
+        # get all queued text first by forcing the -_concatenateText() to run
+        self.__concatenateText("")
+        
         self.__write(self.inContinue and sys.ps2 or sys.ps1)
         # little trick to get the cursor position registered within QScintilla
         self.SendScintilla(QsciScintilla.SCI_CHARLEFT)