Improved help screen

1 files changed, 8 insertions, 1 deletions

diff --git a/src/Eval.hs b/src/Eval.hs
index 5494ee7..0b7632a 100644
--- a/src/Eval.hs
+++ b/src/Eval.hs
@@ -198,7 +198,14 @@ runRepl = do
   return code
 
 usage :: IO ()
-usage = putStrLn "Invalid arguments. Use 'bruijn [file]' instead"
+usage = do
+  putStrLn "Invalid arguments. Use 'bruijn [option] path' instead"
+  putStrLn "-c\tcompile path to binary-BLC"
+  putStrLn "-C\tcompile path to ASCII-BLC"
+  putStrLn "-e\texecute path as binary-BLC"
+  putStrLn "-E\texecute path as ASCII-BLC"
+  putStrLn "-*\tshow this help"
+  putStrLn "<default>\texecute path as text-bruijn"
 
 evalMain :: IO ()
 evalMain = do