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diff --git a/docs/users_guide/glasgow_exts.xml b/docs/users_guide/glasgow_exts.xml
index 7a918a8..96c2ce9 100644
--- a/docs/users_guide/glasgow_exts.xml
+++ b/docs/users_guide/glasgow_exts.xml
@@ -128,6 +128,45 @@ documentation describes all the libraries that come with GHC.
+ :
+
+
+
+
+ As an experimental change, we are exploring the possibility of
+ making pattern bindings monomorphic; that is, not generalised at all.
+ A pattern binding is a binding whose LHS has no function arguments,
+ and is not a simple variable. For example:
+
+ f x = x -- Not a pattern binding
+ f = \x -> x -- Not a pattern binding
+ f :: Int -> Int = \x -> x -- Not a pattern binding
+
+ (g,h) = e -- A pattern binding
+ (f) = e -- A pattern binding
+ [x] = e -- A pattern binding
+
+Experimentally, GHC now makes pattern bindings monomorphic by
+default. Use to recover the
+standard behaviour.
+
+
+
+
+
+
+ :
+
+
+
+ Use GHCi's extended default rules in a regular module ().
+ Independent of the
+ flag.
+
+
+
+
+
@@ -2466,7 +2505,7 @@ function that called it. For example, our sort function might
to pick out the least value in a list:
least :: (?cmp :: a -> a -> Bool) => [a] -> a
- least xs = fst (sort xs)
+ least xs = head (sort xs)
Without lifting a finger, the ?cmp parameter is
propagated to become a parameter of least as well. With explicit
@@ -6072,7 +6111,7 @@ shortcoming is something that could be fixed, with some kind of pragma.)
-The <literal>inline</literal> function
+The <literal>lazy</literal> function
The lazy function restrains strictness analysis a little:
@@ -6097,6 +6136,21 @@ look strict in y which would defeat the whole
purpose of par.
+
+The <literal>unsafeCoerce#</literal> function
+
+The function unsafeCoerce# allows you to side-step the
+typechecker entirely. It has type
+
+ unsafeCoerce# :: a -> b
+
+That is, it allows you to coerce any type into any other type. If you use this
+function, you had better get it right, otherwise segmentation faults await.
+It is generally used when you want to write a program that you know is
+well-typed, but where Haskell's type system is not expressive enough to prove
+that it is well typed.
+
+