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cocalc now properly works; also add a concrete example of an "astral plane unicode" identifier, so anybody can easily see what happens in the Jupyter client of their choice. #468

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Aug 19, 2019
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cocalc now properly works; also add a concrete example of an "astral plane unicode" identifier, so anybody can easily see what happens in the Jupyter client of their choice. #468

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CoCalc is no longer affected by the unicode offset issue (see https:/…
williamstein Aug 16, 2019
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add an example of an astral plane unicode identifier
williamstein Aug 17, 2019
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5 changes: 3 additions & 2 deletions docs/messaging.rst
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Expand Up @@ -1457,17 +1457,18 @@ Frontends claiming to implement protocol 5.2 **MUST** identify cursor_pos as the
Kernels may choose to expect the UTF-16 offset from requests implementing protocol 5.1 and earlier, in order to behave correctly with the most popular frontends.
But they should know that doing so *introduces* the inverse bug for the frontends that do not have this bug.

As an example, use a python3 kernel and evaluate ``𨭎𨭎𨭎𨭎𨭎 = 10``. Then type ``𨭎𨭎`` followed by the tab key and see if it properly completes.

Known affected frontends (as of 2017-06):

- Jupyter Notebook < 5.1
- JupyterLab < 0.24
- nteract < 0.2.0
- CoCalc
- Jupyter Console and QtConsole with Python 2 on macOS and Windows

Known *not* affected frontends:

- QtConsole, Jupyter Console with Python 3 or Python 2 on Linux
- QtConsole, Jupyter Console with Python 3 or Python 2 on Linux, CoCalc

.. seealso::

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