FilzaPlus turns Filza into a code editor, complete with syntax highlighting!
Along with the highlighting, dark mode was fixed for the text editor and pressing save now updates the file modification date. If you do any code editing with Filza, FilzaPlus is a must-have.
The source code is available on GitHub. Feel free to make your own syntax themes or add support for more languages!
Configure syntax settings inside Filza preferences.