F# Flychecker

flycheck-fsharp.el

(flycheck-define-checker fsharp-check
  ;; Lazy command - run compiler in module mode
  :command ("fsc" "--target:module" source)

  ;; /path/to/X.fs(7,23): error FS0001: This expression was expected to have type\n
  ;;    int -> int option\n
  ;;  but here has type\n
  ;;    int\n
  ;; \n
  ;; TODO: better indentation below
  :error-patterns
  ((error line-start (file-name) "(" line "," column "): error "
            (message (and (one-or-more not-newline) "\n" (zero-or-more (and (one-or-more not-newline) "\n")) (or "\n" buffer-end))))

   (warning line-start (file-name) "(" line "," column "): warning "
            (message (and (one-or-more not-newline) "\n" (zero-or-more (and (one-or-more not-newline) "\n")) (or "\n" buffer-end))))
   )
  :modes fsharp-mode)