Steffen Winter enhanced Fortran language support in the helix-editor/helix repository by expanding language detection to recognize uppercase Fortran file extensions and refining syntax highlighting and code parsing. Leveraging configuration skills and the tree-sitter parsing framework, Steffen updated the Fortran grammar to improve parsing accuracy and folding behavior within the editor. This work addressed the challenge of inconsistent file extension recognition and improved the editor’s ability to accurately highlight and fold Fortran code. The changes, implemented using TOML and scm, focused on maintainability and correctness, resulting in a more robust editing experience for Fortran developers without introducing new bug fixes.