Gedit text highlight

Hi. I’m using gedit to create my code. I’m writing in a languagge is not present in the list of the availables.
I’d like to modify the configuration file of gedit in order to create a new category of languagge to use for my personalized languagge. Is it possible?

Thanks in advance for any answer.

Gedit uses GtkSourceView. There you need to create a custom xml file and gedit will use it.

Which language? It’s possible someone already has created a language definition for it. Have you checked here?