Fixed a crash bug introduced with inexact case matching

deluge/ui/console/modes/legacy.py

@@ -87,9 +87,13 @@ def complete_line(line, possible_matches):
 
     for match in possible_matches[1:]:
         for i, c in enumerate(match):
+            try:
                 if c.lower() != possible_matches[0][i].lower():
                     maxlen = min(maxlen, i)
                     break
+            except IndexError:
+                maxlen = min(maxlen, i)
+                break
 
     return possible_matches[0][:maxlen].replace(" ", r"\ ")
 
@@ -597,7 +601,11 @@ class Legacy(BaseMode):
             if   hits == 1:
                 p = " ".join(split(line)[:-1])
 
+                try:
                     l_arg = shlex.split(line)[-1]
+                except IndexError:
+                    l_arg = ""
+
                 new_line = " ".join( [p, complete_line(l_arg, possible_matches)] ).lstrip()
 
                 if len(format_utils.remove_formatting(new_line)) > len(line):