--- a/hglib.lua	Thu Sep 08 13:42:51 2016 +0800
+++ b/hglib.lua	Thu Sep 08 14:39:52 2016 +0800
@@ -89,11 +89,13 @@
 	end
 	self.wh:write('getencoding\n')
 	self.wh:flush()
-	local channel, message = read_channel(self.rh)
-	if channel == 'r' then
-		return message
-	elseif channel == 'e' then
-		return nil, message
+	while true do
+		local channel, message = read_channel(self.rh)
+		if channel == 'r' then
+			return message
+		elseif channel == 'e' or channel:lower() ~= channel then
+			return nil, message
+		end
 	end
 end