I understood you. Here is a more accurate answer to your question about file type: I am trying to implement adequate syntax highlighting of an unsupported language in Geany. It is a language with C-like syntax. To do this, I myself created a configuration file according to the instructions.  Everything works well except for these [[a-zA-Z _] \ w *] keywords.  In an attempt to solve the problem, I tried to introduce new keywords in the configuration of C, Python and other languages. No utf does not work.