我想下载包含日文字符的网址
http://ja.wikipedia.org/wiki/%E3%82%A2%E3%82%A4%E3%82%B6%E3%83%83%E3%82%AF%E3%83%BB%E3%82%A2%E3%82%B7%E3%83%A2%E3%83%95
使用wget下载文件时，文件名变得乱码。
在wget的手册中，有一些关于这个问题：
If you specify ‘nocontrol’, then the escaping of the control characters is also switched off. This option may make sense when you are downloading URLs whose names contain UTF-8 characters, on a system which can save and display filenames in UTF-8 (some possible byte values used in UTF-8 byte sequences fall in the range of values designated by Wget as “controls”).
所以我试着写这个。但是，它没有用。有什么问题？
wget --restrict-file-names=nocontrol http://ja.wikipedia.org/wiki/%E3%82%A2%E3%82%A4%E3%82%B6%E3%83%83%E3%82%AF%E3%83%BB%E3%82%A2%E3%82%B7%E3%83%A2%E3%83%95