From 9433e34b2133d8f1e77fea15447ba4d0259a5fb0 Mon Sep 17 00:00:00 2001
From: Peter Powell
Date: Wed, 12 Jun 2019 21:46:07 +0100
Subject: Show the mode syntax in ERR_INVALIDMODEPARAM.

---
 src/mode.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'src/mode.cpp')

diff --git a/src/mode.cpp b/src/mode.cpp
index aa4d50b08..159474985 100644
--- a/src/mode.cpp
+++ b/src/mode.cpp
@@ -89,7 +89,10 @@ void ModeHandler::DisplayEmptyList(User*, Channel*)
 
 void ModeHandler::OnParameterMissing(User* user, User* dest, Channel* channel)
 {
-	const std::string message = InspIRCd::Format("You must specify a parameter for the %s mode", name.c_str());
+	std::string message = InspIRCd::Format("You must specify a parameter for the %s mode.", name.c_str());
+	if (!syntax.empty())
+		message.append(InspIRCd::Format(" Syntax: %s.", syntax.c_str()));
+
 	if (channel)
 		user->WriteNumeric(Numerics::InvalidModeParameter(channel, this, "*", message));
 	else
@@ -171,6 +174,7 @@ PrefixMode::PrefixMode(Module* Creator, const std::string& Name, char ModeLetter
 	, selfremove(true)
 {
 	list = true;
+	syntax = "<nick>";
 }
 
 ModResult PrefixMode::AccessCheck(User* src, Channel*, std::string& value, bool adding)
-- 
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