Add a method to ConfigTag to help with retrieving a single character.

include/configreader.h

@@ -54,6 +54,8 @@ class CoreExport ConfigTag : public refcountbase
 	double getFloat(const std::string& key, double def, double min = DBL_MIN, double max = DBL_MAX);
 	/** Get the value of an option, using def if it does not exist */
 	bool getBool(const std::string& key, bool def = false);
+	/** Get the value of an option, using def if it does not exist */
+	unsigned char getCharacter(const std::string& key, unsigned char def = '\0');
 
 	/** Get the value in seconds of a duration that is in the user-friendly "1h2m3s" format,
 	 * using a default value if it does not exist or is out of bounds.

src/configparser.cpp

@@ -755,6 +755,16 @@ bool ConfigTag::getBool(const std::string &key, bool def)
 	return def;
 }
 
+unsigned char ConfigTag::getCharacter(const std::string &key, unsigned char def)
+{
+	std::string result;
+	if (!readString(key, result) || result.size() != 1)
+		return def;
+
+	return result[0];
+}
+
+
 std::string ConfigTag::getTagLocation()
 {
 	return src_name + ":" + ConvToStr(src_line);

src/modules/m_ojoin.cpp

@@ -113,7 +113,7 @@ class ModuleOjoin : public Module
  public:
 
 	ModuleOjoin()
-		: np(this, ServerInstance->Config->ConfValue("ojoin")->getString("prefix").c_str()[0])
+		: np(this, ServerInstance->Config->ConfValue("ojoin")->getCharacter("prefix"))
 		, mycommand(this, np)
 	{
 	}

src/modules/m_operprefix.cpp

@@ -37,7 +37,7 @@ class OperPrefixMode : public PrefixMode
 		OperPrefixMode(Module* Creator)
 			: PrefixMode(Creator, "operprefix", 'y', OPERPREFIX_VALUE)
 		{
-			prefix = ServerInstance->Config->ConfValue("operprefix")->getString("prefix", "!", 1, 1)[0];
+			prefix = ServerInstance->Config->ConfValue("operprefix")->getCharacter("prefix", '!');
 			ranktoset = ranktounset = UINT_MAX;
 		}
 };