Strip several space between command and arguments, not only one

ethermess.py

@@ -214,7 +214,17 @@ def handle_user_command(backend, line):
 
 	try:
 		if len(line) > 0 and line[0] == '/':
-			command, _, rest = line.partition(' ')
+			index = line.find(' ')
+			if index != -1:
+				command = line[:index]
+
+				while index < len(line) and line[index] == ' ':
+					index += 1
+
+				rest = line[index:]
+			else:
+				command = line
+				rest = ''
 
 			if command == '/':
 				# Send quoted message