From 3e787de994b0eafc20dce071194d1245a81bb68d Mon Sep 17 00:00:00 2001
From: Shivaram Lingamneni <slingamn@cs.stanford.edu>
Date: Mon, 24 Feb 2020 21:45:21 -0500
Subject: [PATCH] handle kiwi's BEFORE *

---
 irc/handlers.go | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/irc/handlers.go b/irc/handlers.go
index 350c0c5e..4e898e11 100644
--- a/irc/handlers.go
+++ b/irc/handlers.go
@@ -551,8 +551,15 @@ func chathistoryHandler(server *Server, client *Client, msg ircmsg.IrcMessage, r
 	if maxChathistoryLimit == 0 {
 		return
 	}
+	preposition := strings.ToLower(msg.Params[0])
+	target = msg.Params[1]
 
 	parseQueryParam := func(param string) (msgid string, timestamp time.Time, err error) {
+		if param == "*" && (preposition == "before" || preposition == "between") {
+			// XXX compatibility with kiwi, which as of February 2020 is
+			// using BEFORE * as a synonym for LATEST *
+			return
+		}
 		err = utils.ErrInvalidParams
 		pieces := strings.SplitN(param, "=", 2)
 		if len(pieces) < 2 {
@@ -580,8 +587,6 @@ func chathistoryHandler(server *Server, client *Client, msg ircmsg.IrcMessage, r
 		return
 	}
 
-	preposition := strings.ToLower(msg.Params[0])
-	target = msg.Params[1]
 	channel, sequence, err = server.GetHistorySequence(nil, client, target)
 	if err != nil || sequence == nil {
 		return