on join:
	if player's name contain "ż" or "ś" or "ą" or "ę" or "ź" or "ó" or "ń" or "ł" or " " or "[" or "]" or "(" or ")" or "{" or "}" or "-" or "+" or "*" or "&" or "§" or "!" or "^" or "~" or "$" or "@":
		kick player due to "Invalid nickname."

on join:
	if player's name contain "`" or "." or "," or "/" or "\" or "|" or ":" or ";" or "?":
		kick player due to "Invalid nickname."
	if player's name length is less than 3:
		kick player due to "Your nickname must be greater than 2 letters"

# Błąd:

[00:12:51 ERROR]: #!#!
[00:12:51 ERROR]: #!#! [Skript] Severe Error:
[00:12:51 ERROR]: #!#! Could not load bc.sk
[00:12:51 ERROR]: #!#!
[00:12:51 ERROR]: #!#! If you're developing an add-on for Skript this likely means that you have done something wrong.
[00:12:51 ERROR]: #!#! If you're a server admin however please go to http://dev.bukkit.org/server-mods/skript/tickets/
[00:12:51 ERROR]: #!#! and check whether this error has already been reported.
[00:12:51 ERROR]: #!#! If not please create a new ticket with a meaningful title, copy & paste this whole error into it,
[00:12:51 ERROR]: #!#! and describe what you did before it happened and/or what you think caused the error.
[00:12:51 ERROR]: #!#! If you think that it's a trigger that's causing the error please post the trigger as well.
[00:12:51 ERROR]: #!#! By following this guide fixing the error should be easy and done fast.
[00:12:51 ERROR]: #!#!
[00:12:51 ERROR]: #!#! Stack trace:
[00:12:51 ERROR]: #!#! java.lang.StringIndexOutOfBoundsException: String index out of range: -1
[00:12:51 ERROR]: #!#!     at java.lang.String.substring(String.java:1967)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.VariableString.unquote(VariableString.java:148)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.hooks.regions.classes.Region$1.parse(Region.java:80)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.hooks.regions.classes.Region$1.parse(Region.java:1)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.registrations.Classes.parseSimple(Classes.java:398)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.registrations.Classes.parse(Classes.java:427)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.UnparsedLiteral.getConvertedExpression(UnparsedLiteral.java:97)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.UnparsedLiteral.getConvertedExpression(UnparsedLiteral.java:86)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.UnparsedLiteral.getConvertedExpression(UnparsedLiteral.java:1)
[00:12:51 ERROR]: #!#!     at com.w00tmast3r.skquery.elements.expressions.ExprDefaultValue.init(ExprDefaultValue.java:64)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.SkriptParser.parse(SkriptParser.java:237)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.SkriptParser.parse(SkriptParser.java:164)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.SkriptParser.parseSingleExpr(SkriptParser.java:509)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.SkriptParser.parseExpression(SkriptParser.java:320)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.SkriptParser.parse_i(SkriptParser.java:990)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.SkriptParser.parse_i(SkriptParser.java:915)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.SkriptParser.parse_i(SkriptParser.java:981)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.SkriptParser.parse(SkriptParser.java:209)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.SkriptParser.parse(SkriptParser.java:164)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.lang.Condition.parse(Condition.java:80)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.ScriptLoader.loadItems(ScriptLoader.java:694)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.ScriptLoader.loadScript(ScriptLoader.java:489)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.ScriptLoader.loadScripts(ScriptLoader.java:262)
[00:12:51 ERROR]: #!#!     at ch.njol.skript.SkriptCommand.onCommand(SkriptCommand.java:155)
[00:12:51 ERROR]: #!#!     at org.bukkit.command.PluginCommand.execute(PluginCommand.java:44)
[00:12:51 ERROR]: #!#!     at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:181)
[00:12:51 ERROR]: #!#!     at org.bukkit.craftbukkit.v1_7_R4.CraftServer.dispatchCommand(CraftServer.java:767)
[00:12:51 ERROR]: #!#!     at org.bukkit.craftbukkit.v1_7_R4.CraftServer.dispatchServerCommand(CraftServer.java:753)
[00:12:51 ERROR]: #!#!     at net.minecraft.server.v1_7_R4.DedicatedServer.aB(DedicatedServer.java:326)
[00:12:51 ERROR]: #!#!     at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:290)
[00:12:51 ERROR]: #!#!     at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584)
[00:12:51 ERROR]: #!#!     at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490)
[00:12:51 ERROR]: #!#!     at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628)
[00:12:51 ERROR]: #!#!
[00:12:51 ERROR]: #!#! Version Information:
[00:12:51 ERROR]: #!#!   Skript: 2.1.2
[00:12:51 ERROR]: #!#!   Bukkit: 1.7.10-R0.1-SNAPSHOT
[00:12:51 ERROR]: #!#!   Minecraft: 1.7.10
[00:12:51 ERROR]: #!#!   Java: 1.8.0_131
[00:12:51 ERROR]: #!#!
[00:12:51 ERROR]: #!#! Running CraftBukkit: false
[00:12:51 ERROR]: #!#!
[00:12:51 ERROR]: #!#! Current node: if player's name contain "`" or "." or "," or "/" or "\" or "|" or ":" or ";" or "?": (bc.sk, line 524)
[00:12:51 ERROR]: #!#! Current item: null
[00:12:51 ERROR]: #!#!
[00:12:51 ERROR]: #!#! Thread: Server thread
[00:12:51 ERROR]: #!#!
[00:12:51 ERROR]: #!#! End of Error.
[00:12:51 ERROR]: #!#!