Qfyilyi

I am using jupyter notebook, but R kernel(IRkernel) sometimes die when inputting Kanji(japanese multibyte chars).

I've tried a few Kanji, and found that IRkernel dies when using specific Kanji characters. For example, '十', '能', '表', etc.
enter image description here

Above image is R concole. Below is Python console.

It doesen't work with R kernel only.
enter image description here

　　

[I 12:44:58.387 LabApp] Kernel started: 9bbe39ea-ef5a-40c3-ae71-fa071874fc79

-- Attaching packages --------------------------------------- tidyverse 1.2.1 --

 tibble  1.4.2      purrr   0.2.5

 tidyr   0.8.2      dplyr   0.7.8

 readr   1.1.1      forcats 0.3.0

-- Conflicts ------------------------------------------ tidyverse_conflicts() --

x dplyr::between()    masks data.table::between()

x readr::col_factor() masks scales::col_factor()

x purrr::discard()    masks scales::discard()

x dplyr::first()      masks data.table::first()

x dplyr::last()       masks data.table::last()

x purrr::transpose()  masks data.table::transpose()

[I 12:45:00.626 LabApp] Adapting to protocol v5.0 for kernel 9bbe39ea-ef5a-40c3-ae71-fa071874fc79

[E 12:45:09.377 LabApp] Uncaught exception in ZMQStream callback

    Traceback (most recent call last):

      File "C:ProgramDataAnaconda3libsite-packageszmqeventloopzmqstream.py", line 432, in _run_callback

        callback(*args, **kwargs)

      File "C:ProgramDataAnaconda3libsite-packagestornadostack_context.py", line 276, in null_wrapper

        return fn(*args, **kwargs)

      File "C:ProgramDataAnaconda3libsite-packagesnotebookserviceskernelskernelmanager.py", line 376, in record_activity

        msg = session.deserialize(fed_msg_list)

      File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientsession.py", line 933, in deserialize

        message['content'] = self.unpack(msg_list[4])

      File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientsession.py", line 105, in <lambda>

        json_unpacker = lambda s: jsonapi.loads(s)

      File "C:ProgramDataAnaconda3libsite-packageszmqutilsjsonapi.py", line 56, in loads

        return jsonmod.loads(s, **kwargs)

      File "C:ProgramDataAnaconda3libjson__init__.py", line 354, in loads

        return _default_decoder.decode(s)

      File "C:ProgramDataAnaconda3libjsondecoder.py", line 339, in decode

        obj, end = self.raw_decode(s, idx=_w(s, 0).end())

      File "C:ProgramDataAnaconda3libjsondecoder.py", line 355, in raw_decode

        obj, end = self.scan_once(s, idx)

    json.decoder.JSONDecodeError: Invalid escape: line 1 column 25 (char 24)

[E 12:45:09.377 LabApp] Uncaught exception in zmqstream callback

    Traceback (most recent call last):

      File "C:ProgramDataAnaconda3libsite-packageszmqeventloopzmqstream.py", line 450, in _handle_events

        self._handle_recv()

      File "C:ProgramDataAnaconda3libsite-packageszmqeventloopzmqstream.py", line 480, in _handle_recv

        self._run_callback(callback, msg)

      File "C:ProgramDataAnaconda3libsite-packageszmqeventloopzmqstream.py", line 432, in _run_callback

        callback(*args, **kwargs)

      File "C:ProgramDataAnaconda3libsite-packagestornadostack_context.py", line 276, in null_wrapper

        return fn(*args, **kwargs)

      File "C:ProgramDataAnaconda3libsite-packagesnotebookserviceskernelskernelmanager.py", line 376, in record_activity

        msg = session.deserialize(fed_msg_list)

      File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientsession.py", line 933, in deserialize

        message['content'] = self.unpack(msg_list[4])

      File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientsession.py", line 105, in <lambda>

        json_unpacker = lambda s: jsonapi.loads(s)

      File "C:ProgramDataAnaconda3libsite-packageszmqutilsjsonapi.py", line 56, in loads

        return jsonmod.loads(s, **kwargs)

      File "C:ProgramDataAnaconda3libjson__init__.py", line 354, in loads

        return _default_decoder.decode(s)

      File "C:ProgramDataAnaconda3libjsondecoder.py", line 339, in decode

        obj, end = self.raw_decode(s, idx=_w(s, 0).end())

      File "C:ProgramDataAnaconda3libjsondecoder.py", line 355, in raw_decode

        obj, end = self.scan_once(s, idx)

    json.decoder.JSONDecodeError: Invalid escape: line 1 column 25 (char 24)

Exception in callback BaseAsyncIOLoop._handle_events(1596, 1)

handle: <Handle BaseAsyncIOLoop._handle_events(1596, 1)>

Traceback (most recent call last):

  File "C:ProgramDataAnaconda3libasyncioevents.py", line 145, in _run

    self._callback(*self._args)

  File "C:ProgramDataAnaconda3libsite-packagestornadoplatformasyncio.py", line 117, in _handle_events

    handler_func(fileobj, events)

  File "C:ProgramDataAnaconda3libsite-packagestornadostack_context.py", line 276, in null_wrapper

    return fn(*args, **kwargs)

  File "C:ProgramDataAnaconda3libsite-packageszmqeventloopzmqstream.py", line 450, in _handle_events

    self._handle_recv()

  File "C:ProgramDataAnaconda3libsite-packageszmqeventloopzmqstream.py", line 480, in _handle_recv

    self._run_callback(callback, msg)

  File "C:ProgramDataAnaconda3libsite-packageszmqeventloopzmqstream.py", line 432, in _run_callback

    callback(*args, **kwargs)

  File "C:ProgramDataAnaconda3libsite-packagestornadostack_context.py", line 276, in null_wrapper

    return fn(*args, **kwargs)

  File "C:ProgramDataAnaconda3libsite-packagesnotebookserviceskernelskernelmanager.py", line 376, in record_activity

    msg = session.deserialize(fed_msg_list)

  File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientsession.py", line 933, in deserialize

    message['content'] = self.unpack(msg_list[4])

  File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientsession.py", line 105, in <lambda>

    json_unpacker = lambda s: jsonapi.loads(s)

  File "C:ProgramDataAnaconda3libsite-packageszmqutilsjsonapi.py", line 56, in loads

    return jsonmod.loads(s, **kwargs)

  File "C:ProgramDataAnaconda3libjson__init__.py", line 354, in loads

    return _default_decoder.decode(s)

  File "C:ProgramDataAnaconda3libjsondecoder.py", line 339, in decode

    obj, end = self.raw_decode(s, idx=_w(s, 0).end())

  File "C:ProgramDataAnaconda3libjsondecoder.py", line 355, in raw_decode

    obj, end = self.scan_once(s, idx)

json.decoder.JSONDecodeError: Invalid escape: line 1 column 25 (char 24)

[E 12:45:09.377 LabApp] Uncaught exception GET /api/kernels/9bbe39ea-ef5a-40c3-ae71-fa071874fc79/channels?session_id=89b50480637cb8ce56024a508a3e4c34 (::1)

    HTTPServerRequest(protocol='http', host='localhost:9999', method='GET', uri='/api/kernels/9bbe39ea-ef5a-40c3-ae71-fa071874fc79/channels?session_id=89b50480637cb8ce56024a508a3e4c34', version='HTTP/1.1', remote_ip='::1')

    Traceback (most recent call last):

      File "C:ProgramDataAnaconda3libsite-packagestornadoweb.py", line 1499, in _stack_context_handle_exception

        raise_exc_info((type, value, traceback))

      File "<string>", line 4, in raise_exc_info

      File "C:ProgramDataAnaconda3libsite-packagestornadostack_context.py", line 315, in wrapped

        ret = fn(*args, **kwargs)

      File "C:ProgramDataAnaconda3libsite-packageszmqeventloopzmqstream.py", line 196, in <lambda>

        self.on_recv(lambda msg: callback(self, msg), copy=copy)

      File "C:ProgramDataAnaconda3libsite-packagesnotebookserviceskernelshandlers.py", line 313, in _on_zmq_reply

        msg = self.session.deserialize(fed_msg_list)

      File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientsession.py", line 933, in deserialize

        message['content'] = self.unpack(msg_list[4])

      File "C:ProgramDataAnaconda3libsite-packagesjupyter_clientsession.py", line 105, in <lambda>

        json_unpacker = lambda s: jsonapi.loads(s)

      File "C:ProgramDataAnaconda3libsite-packageszmqutilsjsonapi.py", line 56, in loads

        return jsonmod.loads(s, **kwargs)

      File "C:ProgramDataAnaconda3libjson__init__.py", line 354, in loads

        return _default_decoder.decode(s)

      File "C:ProgramDataAnaconda3libjsondecoder.py", line 339, in decode

        obj, end = self.raw_decode(s, idx=_w(s, 0).end())

      File "C:ProgramDataAnaconda3libjsondecoder.py", line 355, in raw_decode

        obj, end = self.scan_once(s, idx)

    json.decoder.JSONDecodeError: Invalid escape: line 1 column 25 (char 24)

And this code works on native R environment fine, so I think this is IRkernel problem.

Thanks.

*Version

OS:Win 10

jupyter-lab:0.32.1

IRkernel:'0.8.14.9000'