From 899c976ee7cab47c74dc5f3531bf7e23a248057b Mon Sep 17 00:00:00 2001
From: "Ray J. Greenwell" <ray@threerings.net>
Date: Wed, 12 Dec 2012 14:17:54 -0800
Subject: [PATCH] Whoops: if the stopwords were empty, the pattern matched
 everything.

---
 .../java/com/threerings/crowd/chat/client/CurseFilter.java   | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/core/src/main/java/com/threerings/crowd/chat/client/CurseFilter.java b/core/src/main/java/com/threerings/crowd/chat/client/CurseFilter.java
index b399b047c..a9fa34b5a 100644
--- a/core/src/main/java/com/threerings/crowd/chat/client/CurseFilter.java
+++ b/core/src/main/java/com/threerings/crowd/chat/client/CurseFilter.java
@@ -209,7 +209,10 @@ public abstract class CurseFilter implements ChatFilter
         for (StringTokenizer st = new StringTokenizer(stopWords); st.hasMoreTokens(); ) {
             patterns.add(getStopWordRegexp(st.nextToken()));
         }
-        setStopPattern("(" + Joiner.on('|').join(patterns) + ")");
+        String pattern = patterns.isEmpty()
+            ? ".\\A" // matches nothing
+            : "(" + Joiner.on('|').join(patterns) + ")";
+        setStopPattern(pattern);
     }
 
     /**