From 39911a812da5ff989806d32a1f93828de73edc38 Mon Sep 17 00:00:00 2001
From: Jeremy Latt <jeremy.latt@gmail.com>
Date: Wed, 26 Feb 2014 12:08:01 -0800
Subject: [PATCH] handle mode command with trailing empty arguments

---
 irc/commands.go  | 10 ++++++++--
 irc/constants.go |  2 +-
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/irc/commands.go b/irc/commands.go
index feb106c4..a255e3c6 100644
--- a/irc/commands.go
+++ b/irc/commands.go
@@ -104,7 +104,6 @@ func parseLine(line string) (StringCode, []string) {
 		parts = append(spacesExpr.Split(line, -1), lastArg)
 	} else {
 		parts = spacesExpr.Split(line, -1)
-
 	}
 	return StringCode(strings.ToUpper(parts[0])), parts[1:]
 }
@@ -477,6 +476,9 @@ func NewUserModeCommand(args []string) (editableCommand, error) {
 	}
 
 	for _, modeChange := range args[1:] {
+		if len(modeChange) == 0 {
+			continue
+		}
 		op := ModeOp(modeChange[0])
 		if (op != Add) && (op != Remove) {
 			return nil, ErrParseCommand
@@ -552,8 +554,12 @@ func NewChannelModeCommand(args []string) (editableCommand, error) {
 	args = args[1:]
 
 	for len(args) > 0 {
-		modeArg := args[0]
+		if len(args[0]) == 0 {
+			args = args[1:]
+			continue
+		}
 
+		modeArg := args[0]
 		op := ModeOp(modeArg[0])
 		if (op == Add) || (op == Remove) {
 			modeArg = modeArg[1:]
diff --git a/irc/constants.go b/irc/constants.go
index a129d762..5538d115 100644
--- a/irc/constants.go
+++ b/irc/constants.go
@@ -23,7 +23,7 @@ var (
 )
 
 const (
-	SEM_VER       = "ergonomadic-1.2.3"
+	SEM_VER       = "ergonomadic-1.2.4"
 	CRLF          = "\r\n"
 	MAX_REPLY_LEN = 512 - len(CRLF)