%************************************************************************
\begin{code}
--- | Apply a substititon to an entire 'CoreExpr'. Rememeber, you may only apply the substitution /once/: see "CoreSubst#apply_once"
+-- | Apply a substititon to an entire 'CoreExpr'. Rememeber, you may only
+-- apply the substitution /once/: see "CoreSubst#apply_once"
substExpr :: Subst -> CoreExpr -> CoreExpr
substExpr subst expr
= go expr