// (The excluded punctuation characters, " * < > ? ` ' | / \ and :,
// have special meanings in certain shells or operating systems.)
//
// CheckFilePath may be less restrictive in the future, but see the
// top-level package documentation for additional information about
// subtleties of Unicode.
func CheckFilePath(path string) error {
	if err := checkPath(path, filePath); err != nil {
		return &InvalidPathError{Kind: "file", Path: path, Err: err}
	}

// version suffix consistent with the version (see
// [golang.org/x/mod/module.Check]). The part of the file path after the
// "<module>@<version>/" prefix must be valid (see
// [golang.org/x/mod/module.CheckFilePath]).
//
// • No two file paths may be equal under Unicode case-folding (see
// [strings.EqualFold]).
//
// • A go.mod file may or may not appear in the top-level directory. If present,