Print a newline before exiting the driver.

[sas]

Summary

This prevents messing up the shell's prompt.

[sas]

This issue does not repro anymore.

[clayborg]

Looks fine.

source/Core/IOHandler.cpp

 // when done.
 void
 IOHandlerEditline::Run ()
 {
     std::string line;
     while (IsActive())
     {
         bool interrupted = false;
+        bool terminate = false;
+
         if (m_multi_line)
         {
             StringList lines;
             if (GetLines (lines, interrupted))
             {
                 if (interrupted)
                 {
-                    m_done = true;
+                    terminate = true;
                 }
                 else
                 {
                     line = lines.CopyList();
                     m_delegate.IOHandlerInputComplete(*this, line);
                 }
             }
             else
             {
-                m_done = true;
+                terminate = true;
             }
         }
         else
         {
             if (GetLine(line, interrupted))
             {
                 if (!interrupted)
                     m_delegate.IOHandlerInputComplete(*this, line);
             }
             else
             {
-                m_done = true;
+                terminate = true;
+            }
+        }
+
+        if (terminate)
+        {
+
+            // If an interactive input stream is interrupted, output a
+            // newline character to avoid the debugger's prompt and the
+            // user's shell's prompt to end up on the same line.
+            if (GetIsInteractive())
+            {
+                fflush(NULL);
+                printf("\n");
             }
         }
     }
 }
 
 void
 IOHandlerEditline::Hide ()
 {