(Pdb) restart \
Traceback (most recent call last):
  File "C:\Program Files\Python36\lib\pdb.py", line 1667, in main
    pdb._runscript(mainpyfile)
  File "C:\Program Files\Python36\lib\pdb.py", line 1548, in _runscript
    self.run(statement)
  File "C:\Program Files\Python36\lib\bdb.py", line 431, in run
    exec(cmd, globals, locals)
  File "<string>", line 1, in <module>
  <code being debugged ommited>
  File "C:\Program Files\Python36\lib\bdb.py", line 48, in trace_dispatch
    return self.dispatch_line(frame)
  File "C:\Program Files\Python36\lib\bdb.py", line 66, in dispatch_line
    self.user_line(frame)
  File "C:\Program Files\Python36\lib\pdb.py", line 261, in user_line
    self.interaction(frame, None)
  File "C:\Program Files\Python36\lib\pdb.py", line 352, in interaction
    self._cmdloop()
  File "C:\Program Files\Python36\lib\pdb.py", line 321, in _cmdloop
    self.cmdloop()
  File "C:\Program Files\Python36\lib\cmd.py", line 138, in cmdloop
    stop = self.onecmd(line)
  File "C:\Program Files\Python36\lib\pdb.py", line 418, in onecmd
    return cmd.Cmd.onecmd(self, line)
  File "C:\Program Files\Python36\lib\cmd.py", line 217, in onecmd
    return func(arg)
  File "C:\Program Files\Python36\lib\pdb.py", line 1025, in do_run
    sys.argv = shlex.split(arg)
  File "C:\Program Files\Python36\lib\shlex.py", line 305, in split
    return list(lex)
  File "C:\Program Files\Python36\lib\shlex.py", line 295, in __next__
    token = self.get_token()
  File "C:\Program Files\Python36\lib\shlex.py", line 105, in get_token
    raw = self.read_token()
  File "C:\Program Files\Python36\lib\shlex.py", line 206, in read_token
    raise ValueError("No escaped character")

Just to be clear, even though the traceback is python 3.6, the same bug occurs in 3.7 with an identical traceback except for some changes in line number

I wouldn't mind taking a look at this. Feel free to assign it to me!

`restart "` also crashes with the same tb

Would it be possible to escape both of those?

For the first one, restart "\\"

and for the second one, restart "\""

Both of those work and don't produce an error

Good!

Is it possible to start a python program with either \ or " as arguments normally (without using character escaping)?

New changeset d968a638fcbf9030c999cfacd4c9bf0656e779c4 by Irit Katriel in branch 'main':
bpo-34266: [pdb] handle ValueError from shlex.split() (GH-26656)
https://github.com/python/cpython/commit/d968a638fcbf9030c999cfacd4c9bf0656e779c4

New changeset 21be6cb0304ba143980b7e4c875cb5b9db30952b by Miss Islington (bot) in branch '3.9':
bpo-34266: [pdb] handle ValueError from shlex.split() (GH-26656) (GH-27005)
https://github.com/python/cpython/commit/21be6cb0304ba143980b7e4c875cb5b9db30952b

New changeset 33022f9e86878c84c605de27aae4bd782ecb8da6 by Irit Katriel in branch '3.10':
[3.10] bpo-34266: [pdb] handle ValueError from shlex.split() (GH-26656) (GH-27006)
https://github.com/python/cpython/commit/33022f9e86878c84c605de27aae4bd782ecb8da6