FAQ

Does fortitude handle preprocessor files?

fortitude uses the tree-sitter Fortran grammar to parse your source code, and currently this has some support for the preprocessor -- essentially limited to #include, and #if and #ifdef guards around complete statements or constructs.

However, tree-sitter is fairly error tolerant, and fortitude should still run fine, you might just get spurious syntax errors. You can ignore these project wide with --ignore=E001.

Does fortitude handle fixed-form Fortran?

Not currently. Fortitude's parser and rules are intended for free-form Fortran source. Fixed-form source files, such as files commonly using .f, .for, or .ftn extensions, are not included in Fortitude's default file discovery patterns.

You can pass fixed-form files explicitly or add their extensions to the include setting, but Fortitude will still parse them as free-form source. This may produce syntax errors or misleading diagnostics, so fixed-form projects are not supported yet.

What is "preview"?

Preview enables a collection of newer rules and fixes that are considered experimental or unstable. See the preview documentation for more details; or, to see which rules are currently in preview, visit the rules reference.