Bukkit

What steps will reproduce the problem?
1. Use command: /ns add !!!!
2. Try to use in-game chat

What is the expected output? What do you see instead?
- The plugin would block text "!!!!"

What version of the product are you using?
- 1.0.0.16

Do you have an error log of what happened?

[14:48:06 INFO]: tubelius issued server command: /ns add !!!!
[14:48:25 ERROR]: Could not pass event AsyncPlayerChatEvent to NoSwearing256 v1.
0.0.16
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja
va:294) ~[Spigot.jar:git-Spigot-1361]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.jav
a:62) ~[Spigot.jar:git-Spigot-1361]
        at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredLi
stener.java:35) ~[Spigot.jar:git-Spigot-1361]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.j
ava:502) [Spigot.jar:git-Spigot-1361]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.j
ava:484) [Spigot.jar:git-Spigot-1361]
        at net.minecraft.server.v1_7_R2.PlayerConnection.chat(PlayerConnection.j
ava:903) [Spigot.jar:git-Spigot-1361]
        at net.minecraft.server.v1_7_R2.PlayerConnection.a(PlayerConnection.java
:843) [Spigot.jar:git-Spigot-1361]
        at net.minecraft.server.v1_7_R2.PacketPlayInChat.a(PacketPlayInChat.java
:28) [Spigot.jar:git-Spigot-1361]
        at net.minecraft.server.v1_7_R2.PacketPlayInChat$1.run(PacketPlayInChat.
java:59) [Spigot.jar:git-Spigot-1361]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [
?:1.7.0_51]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_51]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:
1.7.0_51]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?
:1.7.0_51]
        at java.lang.Thread.run(Unknown Source) [?:1.7.0_51]
Caused by: java.lang.OutOfMemoryError: Java heap space
        at java.util.Arrays.copyOf(Unknown Source) ~[?:1.7.0_51]
        at java.lang.AbstractStringBuilder.expandCapacity(Unknown Source) ~[?:1.
7.0_51]
        at java.lang.AbstractStringBuilder.ensureCapacityInternal(Unknown Source
) ~[?:1.7.0_51]
        at java.lang.AbstractStringBuilder.append(Unknown Source) ~[?:1.7.0_51]
        at java.lang.StringBuffer.append(Unknown Source) ~[?:1.7.0_51]
        at java.lang.StringBuffer.append(Unknown Source) ~[?:1.7.0_51]
        at java.util.regex.Matcher.appendReplacement(Unknown Source) ~[?:1.7.0_5
1]
        at java.util.regex.Matcher.replaceAll(Unknown Source) ~[?:1.7.0_51]
        at java.lang.String.replaceAll(Unknown Source) ~[?:1.7.0_51]
        at NoSwearing.NoSwearing.isInappropriate(NoSwearing.java:670) ~[?:?]
        at NoSwearing.NoSwearing.onChat(NoSwearing.java:307) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0
_51]
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0
_51]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1
.7.0_51]
        at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_51]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.ja
va:292) ~[Spigot.jar:git-Spigot-1361]
        ... 13 more