Merge pull request #9942 from mbyt/minus_m_IPython.terminal.debugger

Allowing debugging with -m IPython.terminal.debugger

IPython/terminal/debugger.py

@@ -75,3 +75,8 b' class TerminalPdb(Pdb):'
 def set_trace():
     TerminalPdb().set_trace()
 
+
+if __name__ == '__main__':
+    import pdb
+    pdb.Pdb = TerminalPdb
+    pdb.main()