Extended the debugger documentation with a 'tips' section

[ghc-hetmet.git] / docs / users_guide / glasgow_exts.xml

diff --git a/docs/users_guide/glasgow_exts.xml b/docs/users_guide/glasgow_exts.xml
index 29e7082..6dfda6b 100644 (file)
--- a/docs/users_guide/glasgow_exts.xml
+++ b/docs/users_guide/glasgow_exts.xml
@@ -620,7 +620,7 @@ to write clunky would be to use case expressions:
 </para>
 
 <programlisting>
-clunky env var1 var1 = case lookup env var1 of
+clunky env var1 var2 = case lookup env var1 of
   Nothing -&gt; fail
   Just val1 -&gt; case lookup env var2 of
     Nothing -&gt; fail
@@ -645,7 +645,7 @@ Here is how I would write clunky:
 </para>
 
 <programlisting>
-clunky env var1 var1
+clunky env var1 var2
   | Just val1 &lt;- lookup env var1
   , Just val2 &lt;- lookup env var2
   = val1 + val2
@@ -2069,7 +2069,7 @@ the standard method is used or the one described here.)
 <title>Stand-alone deriving declarations</title>
 
 <para>
-GHC now allows stand-alone <literal>deriving</literal> declarations:
+GHC now allows stand-alone <literal>deriving</literal> declarations, enabled by <literal>-fglasgow-exts</literal>:
 <programlisting>
   data Foo a = Bar a | Baz String