From 8ef5c350f08aed38b2d64f8770298baf74f03afe Mon Sep 17 00:00:00 2001
From: Sadie Powell <sadie@witchery.services>
Date: Wed, 2 Jun 2021 03:43:27 +0100
Subject: Send the CHARSET token if using a non-ascii casemapping.

---
 docs/conf/codepages/iso-8859-1.conf.example |  2 +-
 docs/conf/codepages/iso-8859-2.conf.example |  2 +-
 src/modules/m_codepage.cpp                  | 14 +++++++++++++-
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/docs/conf/codepages/iso-8859-1.conf.example b/docs/conf/codepages/iso-8859-1.conf.example
index 83a772600..a5217cf73 100644
--- a/docs/conf/codepages/iso-8859-1.conf.example
+++ b/docs/conf/codepages/iso-8859-1.conf.example
@@ -1,6 +1,6 @@
 # This file contains ISO 8859-1 codepage rules for use with the codepage module.
 
-<codepage name="iso-8859-1">
+<codepage name="iso-8859-1" charset="iso-8859-1">
 
 <cpchars begin="192" end="214" front="yes"> # ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ
 <cpchars begin="216" end="246" front="yes"> # ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö
diff --git a/docs/conf/codepages/iso-8859-2.conf.example b/docs/conf/codepages/iso-8859-2.conf.example
index df41d88fb..61dd78230 100644
--- a/docs/conf/codepages/iso-8859-2.conf.example
+++ b/docs/conf/codepages/iso-8859-2.conf.example
@@ -1,6 +1,6 @@
 # This file contains ISO 8859-2 codepage rules for use with the codepage module.
 
-<codepage name="iso-8859-2">
+<codepage name="iso-8859-2" charset="iso-8859-2">
 
 <cpchars index="161" front="yes">           # Ą
 <cpchars index="163" front="yes">           # Ł
diff --git a/src/modules/m_codepage.cpp b/src/modules/m_codepage.cpp
index 45fdb3d83..f299b92fa 100644
--- a/src/modules/m_codepage.cpp
+++ b/src/modules/m_codepage.cpp
@@ -67,6 +67,9 @@ class ModuleCodepage
 	// The IsNick handler which was set before this module was loaded.
 	const TR1NS::function<bool(const std::string&)> origisnick;
 
+	// The character set used for the codepage.
+	std::string charset;
+
 	template <typename T>
 	void RehashHashmap(T& hashmap)
 	{
@@ -138,7 +141,9 @@ class ModuleCodepage
 
 	void ReadConfig(ConfigStatus& status) CXX11_OVERRIDE
 	{
-		const std::string name = ServerInstance->Config->ConfValue("codepage")->getString("name");
+		ConfigTag* codepagetag = ServerInstance->Config->ConfValue("codepage");
+
+		const std::string name = codepagetag->getString("name");
 		if (name.empty())
 			throw ModuleException("<codepage:name> is a required field!");
 
@@ -200,6 +205,7 @@ class ModuleCodepage
 				lower, lower, upper, upper);
 		}
 
+		charset = codepagetag->getString("charset");
 		std::swap(allowedchars, newallowedchars);
 		std::swap(allowedfrontchars, newallowedfrontchars);
 		std::swap(casemap, newcasemap);
@@ -214,6 +220,12 @@ class ModuleCodepage
 		ServerInstance->ISupport.Build();
 	}
 
+	void On005Numeric(std::map<std::string, std::string>& tokens) CXX11_OVERRIDE
+	{
+		if (!charset.empty())
+			tokens["CHARSET"] = charset;
+	}
+
 	Version GetVersion() CXX11_OVERRIDE
 	{
 		std::stringstream linkdata;
-- 
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