From e7a3680052a9b3ef206af4cd934b6a0d61ffb7ad Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom@tomsmeding.com>
Date: Tue, 12 Sep 2023 11:57:54 +0200
Subject: Separate reply message for :q

---
 src/Ghci.hs | 4 ++--
 src/Main.hs | 2 ++
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Ghci.hs b/src/Ghci.hs
index ae44881..85081c5 100644
--- a/src/Ghci.hs
+++ b/src/Ghci.hs
@@ -61,7 +61,7 @@ parseSettingsReply = ParseSettings 200 True
 parseSettingsPaste :: ParseSettings
 parseSettingsPaste = ParseSettings 50000 False
 
-data Result a = Error String | Ignored | Return a
+data Result a = Error String | Ignored | Return a | Exited
   deriving (Show)
 
 makeGhci :: IO Ghci
@@ -95,7 +95,7 @@ runStmtClever ghci pset line =
             putStrLn "ghci: restarting due to :quit"
             hFlush stdout
             ghci' <- makeGhci
-            return (ghci', Return "")
+            return (ghci', Exited)
       _ -> runStmt ghci pset line
     _ -> runStmt ghci pset line
   where
diff --git a/src/Main.hs b/src/Main.hs
index 8990efb..89e27d7 100644
--- a/src/Main.hs
+++ b/src/Main.hs
@@ -102,6 +102,7 @@ runInGhci ghci pset message = do
     Ignored -> return (ghci', Nothing)
     Return "" -> return (ghci', Just (T.pack "<no output>"))
     Return s -> return (ghci', Just (T.pack s))
+    Exited -> return (ghci', Just (T.pack "<bye>"))
 
 data ReqKind = Reply | Paste
   deriving (Show)
@@ -141,6 +142,7 @@ mainGHCI = do
           Return output -> putStrLn $ "output = <" ++ output ++ ">"
           Ignored -> putStrLn "<ignored>"
           Error err -> putStrLn err
+          Exited -> putStrLn $ "<exited>"
         loop ghci'
   makeGhci >>= loop
 
-- 
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