I have copied syntax for C (filetypes.c) to filetypes.zsc.conf. However, when I open a file with zsc suffix, there is no syntax highlighting. I know that their (C and ZScript) syntax is close enough, and when I select the filetype manually through the menu, the highlighting is working. I have also tried copying the cyntax from CPP file, and it doesn't work either. Also I know that when I created a custom filetype for SCSS files, everything went without a hitch, and files with scss suffix are recognized and the syntax is highlighted. But for .zsc it is not working for some reason.

Geany version is 1.36.