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authorAndrew Farmer <afarmer@ittc.ku.edu>2012-12-06 15:47:33 -0600
committerSimon Peyton Jones <simonpj@microsoft.com>2012-12-21 09:14:28 +0000
commitc56c355b0f5504f8afd062ca4c78a8bb40905299 (patch)
tree47f85afc2f5a6efbbee4bacd255026de53e40006 /docs
parent6290c7bd0941dc2ae02df200d903d35ca825c4aa (diff)
downloadhaskell-c56c355b0f5504f8afd062ca4c78a8bb40905299.tar.gz
Only allow special NeverActive syntax for RULES.
Diffstat (limited to 'docs')
-rw-r--r--docs/users_guide/glasgow_exts.xml3
1 files changed, 3 insertions, 0 deletions
diff --git a/docs/users_guide/glasgow_exts.xml b/docs/users_guide/glasgow_exts.xml
index 78986778eb..49b6ea3892 100644
--- a/docs/users_guide/glasgow_exts.xml
+++ b/docs/users_guide/glasgow_exts.xml
@@ -9469,6 +9469,9 @@ The "[2]" means that the rule is active in Phase 2 and subsequent phases. The i
notation "[~2]" is also accepted, meaning that the rule is active up to, but not including,
Phase 2.
</para>
+<para>
+Rules support the special phase-control notation "[~]", which means the rule is never active.
+</para>
</listitem>