Is there an existing issue for this?

• I have searched the existing issues

What is the missing lexer?

Modelica is the open standard language for systems simulation. They have a lot of support from major simulation tools and is very well specified:

https://modelica.org

File extension is ".mo"

There is no support by now on chroma for this languaje, the following pages can provide a good starting point:

https://github.com/commenthol/highlightjs-modelica
https://hackage.haskell.org/package/modelicaparser

Not complete:
https://gist.github.com/dietmarw/3346903

Links to existing syntax definitions

https://github.com/juandesant/Modelica.tmbundle

https://github.com/BorisChumichev/modelicaSublimeTextPackage