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document that -fglasgow-exts is needed for RULES to work
author
Malcolm.Wallace@cs.york.ac.uk
<unknown>
Wed, 12 Jul 2006 09:39:07 +0000
(09:39 +0000)
committer
Malcolm.Wallace@cs.york.ac.uk
<unknown>
Wed, 12 Jul 2006 09:39:07 +0000
(09:39 +0000)
docs/users_guide/glasgow_exts.xml
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diff --git
a/docs/users_guide/glasgow_exts.xml
b/docs/users_guide/glasgow_exts.xml
index
319104e
..
3801f96
100644
(file)
--- a/
docs/users_guide/glasgow_exts.xml
+++ b/
docs/users_guide/glasgow_exts.xml
@@
-5378,7
+5378,9
@@
The programmer can specify rewrite rules as part of the source program
(in a pragma). GHC applies these rewrite rules wherever it can, provided (a)
the <option>-O</option> flag (<xref linkend="options-optimise"/>) is on,
and (b) the <option>-frules-off</option> flag
(in a pragma). GHC applies these rewrite rules wherever it can, provided (a)
the <option>-O</option> flag (<xref linkend="options-optimise"/>) is on,
and (b) the <option>-frules-off</option> flag
-(<xref linkend="options-f"/>) is not specified.
+(<xref linkend="options-f"/>) is not specified, and (c) the
+<option>-fglasgow-exts</option> (<xref linkend="options-language"/>)
+flag is active.
</para>
<para>
</para>
<para>