From: Ian Lynagh <igloo@earth.li>
Date: Sat, 18 Dec 2010 15:01:21 +0000 (+0000)
Subject: Document GADTSyntax extension
X-Git-Url: http://git.megacz.com/?p=ghc-hetmet.git;a=commitdiff_plain;h=14f9af49db1672e023ac8d8c506b42bc5400a787

Document GADTSyntax extension
---

diff --git a/docs/users_guide/flags.xml b/docs/users_guide/flags.xml
index 2bcb5e6..a9c0184 100644
--- a/docs/users_guide/flags.xml
+++ b/docs/users_guide/flags.xml
@@ -763,6 +763,13 @@
 	      <entry><option>-XNoGADTs</option></entry>
 	    </row>
 	    <row>
+	      <entry><option>-XGADTSyntax</option></entry>
+	      <entry>Enable <link linkend="gadt-style">generalised algebraic data type syntax</link>.
+	      </entry>
+	      <entry>dynamic</entry>
+	      <entry><option>-XNoGADTSyntax</option></entry>
+	    </row>
+	    <row>
 	      <entry><option>-XTypeFamilies</option></entry>
 	      <entry>Enable <link linkend="type-families">type families</link>.</entry>
 	      <entry>dynamic</entry>
diff --git a/docs/users_guide/glasgow_exts.xml b/docs/users_guide/glasgow_exts.xml
index a193088..ddbd2ec 100644
--- a/docs/users_guide/glasgow_exts.xml
+++ b/docs/users_guide/glasgow_exts.xml
@@ -2434,7 +2434,8 @@ declarations.  Define your own instances!
 <sect2 id="gadt-style">
 <title>Declaring data types with explicit constructor signatures</title>
 
-<para>GHC allows you to declare an algebraic data type by 
+<para>When the <literal>GADTSyntax</literal> extension is enabled,
+GHC allows you to declare an algebraic data type by
 giving the type signatures of constructors explicitly.  For example:
 <programlisting>
   data Maybe a where