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-rw-r--r--XMonad/Util/Run.hs9
1 files changed, 9 insertions, 0 deletions
diff --git a/XMonad/Util/Run.hs b/XMonad/Util/Run.hs
index 34c9b5e..796193d 100644
--- a/XMonad/Util/Run.hs
+++ b/XMonad/Util/Run.hs
@@ -86,6 +86,15 @@ runProcessWithInputAndWait cmd args input timeout = io $ do
-- Use like:
--
-- > (5.5 `seconds`)
+--
+-- In GHC 7 and later, you must either enable the PostfixOperators extension
+-- (by adding
+--
+-- > {-# LANGUAGE PostfixOperators #-}
+--
+-- to the top of your file) or use seconds in prefix form:
+--
+-- > 5.5 seconds
seconds :: Rational -> Int
seconds = fromEnum . (* 1000000)