Minor work on getting history command to be configurable and also

display a certain number of main chat history lines after login.

src/core/commands.c

@@ -132,19 +132,40 @@ static int command_status_user_not_found(struct hub_info* hub, struct hub_user*
 const char* command_get_syntax(struct commands_handler* handler)
 {
 	static char args[128];
+	int optional = 0;
 	size_t n = 0;
 	args[0] = 0;
 	if (handler->args)
 	{
 		for (n = 0; n < strlen(handler->args); n++)
 		{
+			// detect optionals
+			if (handler->args[n] == '?')
+			{
+				optional = 1;
+				continue;
+			}
+
 			if (n > 0) strcat(args, " ");
+
+			if (optional)
+			{
+				strcat(args, "[");
+			}
+
 			switch (handler->args[n])
 			{
 				case 'n': strcat(args, "<nick>"); break;
 				case 'c': strcat(args, "<cid>");  break;
 				case 'a': strcat(args, "<addr>"); break;
 				case 'm': strcat(args, "<message>"); break;
+				case 'i': strcat(args, "<number>"); break;
+			}
+
+			if (optional)
+			{
+				strcat(args, "]");
+				optional = 0;
 			}
 		}
 	}
@@ -606,7 +627,7 @@ static struct commands_handler command_handlers[] = {
 #endif
 	{ "getip",      5, "n", cred_operator,  command_getip,    "Show IP address for a user"   },
 	{ "help",       4, 0,   cred_guest,     command_help,     "Show this help message."      },
-	{ "history",    7, 0,   cred_guest,     command_history,  "Show the last chat messages." },
+	{ "history",    7, "?i",cred_guest,     command_history,  "Show the last chat messages." },
 	{ "kick",       4, "n", cred_operator,  command_kick,     "Kick a user"                  },
 	{ "log",        3, 0,   cred_operator,  command_log,      "Display log"                  },
 	{ "motd",       4, 0,   cred_guest,     command_motd,     "Show the message of the day"  },

src/core/config.xml

@@ -211,6 +211,17 @@
 		<since>0.3.0</since>
 	</option>
 
+	<option name="history_on_login" type="int" default="0">
+		<check min="0" max="250" />
+		<short>Send chat message history when logging in</short>
+		<description><![CDATA[
+			This specifies the number of chat messages that are sent to all users when logging in.
+			Users can use the "!history" command to list these messages later.
+		]]></description>
+		<since>0.3.2</since>
+	</option>
+
+
 	<option name="max_logout_log" type="int" default="20">
 		<check min="0" max="2000" />
 		<short>Number of log entries for people leaving the hub</short>