More accurate isatty test for MinGW.

[ghc-base.git] / GHC / IO / FD.hs

diff --git a/GHC/IO/FD.hs b/GHC/IO/FD.hs
index 0480bb6..c67615d 100644 (file)
--- a/GHC/IO/FD.hs
+++ b/GHC/IO/FD.hs
@@ -374,7 +374,12 @@ foreign import ccall safe "fdReady"
 -- Terminal-related stuff
 
 isTerminal :: FD -> IO Bool
-isTerminal fd = c_isatty (fdFD fd) >>= return.toBool
+isTerminal fd =
+#if defined(mingw32_HOST_OS)
+    is_console (fdFD fd) >>= return.toBool
+#else
+    c_isatty (fdFD fd) >>= return.toBool
+#endif
 
 setEcho :: FD -> Bool -> IO () 
 setEcho fd on = System.Posix.Internals.setEcho (fdFD fd) on