How do I add syntax highlighting to my own Jupyter kernel?

[HelgeCPH]

Hej all,

How do I add syntax highlighting to my own Jupyter kernel?

During the last week I worked on a Jupyter kernel for the Cypher Query Language, see https://github.com/HelgeCPH/cypher_kernel. I am in early stages but the kernel seems to work okay so far.

However, I cannot figure out how to add syntax highlighting to the code cells containing Cypher code. I added code completion of keywords by implementing the do_complete method but I cannot find anything related for syntax highlighting.

Are there examples for how to add syntax highlighting somewhere? Is there anything in the documentation that I could not find? Any help is appreciated.

[takluyver]

Hi Helge,

Syntax highlighting is up to the frontend. For the notebook, there's a Javascript library called Codemirror, and happily it looks like it has a Cypher mode. I think if you set the language name to cypher on this line it should use that:

https://github.com/HelgeCPH/cypher_kernel/blob/c6c3dacf3dfaceec48abf8049e3d53d6d29077ae/cypher_kernel/kernel.py#L19