Fixes a bug involving non-standard starting indexes

comic_download/__main__.py

@@ -116,7 +116,7 @@ def __main__():
             if r and type(r[0]) == int:
                 start = args.start or comic.get_first_strip()
                 end = args.end or comic.get_latest_strip()
-                r = r[start - 1:end]
+                r = r[r.index(start):r.index(end) + 1]
 
         try:
             for index in reversed(r):