Could not lex literal_block as "cpp"

[bradley...@gmail.com]

Suppose the following file is named soruce/temp.cpp:

    double f(

        double x // '(x)

    )
   {  return x; }

If I put the following command in my sphinx-quickstart source/index.rst file below the toctree command:

    .. literalinclude:: temp.cpp
       :language: cpp

and I execute the following command

    sphinx-build -b html source build

   

I get the following error message

   ...  sphinx/source/index.rst:14: WARNING: Could not lex literal_block as "cpp". ...

If, in temp.cpp,  I change the '(x) to (x) , the warning goes away and the file gets highlighted. It seems to me this change should not make any difference because it is inside a C++ comment.

[bradley...@gmail.com]

The following test indicates this is a problem with sphinx and not pygments.

I copied and pastered source/temp.cpp into the pygments Demo https://pygments.org/demo/

with Language C++ and it works fine:

[aziz khan]

Thanks, I'll check it out! 

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.

[Jean Abou Samra]

--

This is a bug that was fixed in recent versions of Pygments. Try upgrading (python3 -m pip install --upgrade pygments).

[Muhammad Arslan Raza]

To view this discussion on the web visit https://groups.google.com/d/msgid/sphinx-users/1601232260.2615963.1668936063389%40mail.yahoo.com.

[Muhammad Arslan Raza]

[bradley...@gmail.com]

Thanks:

It appears that my system has automatically upgraded to pygments 2.13.0 and the problem is no longer there.