Hello.
I am new user, I have recently started using Jupter, which in turn uses CodeMirror in is notebooks.
I am not sure if my question is right for this forum.
What I am trying to accomplish?
I have created my own programming language and I want to integrate it fully with Jupyter,
that means also getting syntax highlighting working in the notebook.
What I get so far?
I got Jupyter notebook up and running backed up by my kernel.
I can have syntax highlighting if I copy one of existing modes and edit it to suite my needs.
What I want to achieve?
I want to reuse existing mode, namely ‘clike’ to do my highlighting for me.
I read through clike.js, and I found there a section that creates a bunch of different highlighting
for different languages (C, C++, Java, C#).
My language has very similar syntax so it makes sense to get highlighting for it in the same way
C or Java highlighting is done, I mean, reusing common ‘clike’ template.
I do not want to modify any of the Jupyter/CodeMirror files, which means, I do not want
to edit clike.js. I want to keep my mode definition in separate file which I can copy/link
into proper mode directory.
I tried to mimic what happens at end of clike.js in
mode definition file I created.
Unfortunately this does not work.
Or, it sorta works iff I add alert() call at end my mode file 
My questions are:
What is the proper way of defining new mode(?)/MIME for new language with very clike syntax?
Can I reuse exiting clike mode like C# or Java does?
Can I do all of this while keeping my definition in separate file?