1 files changed, 14 insertions, 0 deletions
diff --git a/testsuite/tests/deSugar/should_run/dsrun020.hs b/testsuite/tests/deSugar/should_run/dsrun020.hs
new file mode 100644
index 0000000000..6d26dc5607
--- /dev/null
+++ b/testsuite/tests/deSugar/should_run/dsrun020.hs
@@ -0,0 +1,14 @@
+-- Tests transform WITH a by clause
+
+{-# OPTIONS_GHC -XTransformListComp #-}
+
+module Main where
+
+import Data.List(takeWhile)
+
+main = putStrLn (show output)
+  where
+    output = [ (x * 10) + y
+             | x <- [1..4]
+             , y <- [1..4]
+             , then takeWhile by (x + y) < 4]
+\ No newline at end of file