mod_autoindex does not respect mod_rewrite rules

I have a directory structure similar to:

public_html/
  example.com/
    index.php
    subdir/
      file.jpg

I'm using shared hosting, so http://example.com maps to /public_html/ for its root, and I can't change this. I've added a mod_rewrite rule to handle this issue:

RewriteEngine On
RewriteRule ^$ example\.com/ [L]
RewriteRule (.*) example\.com/$1/ [L]

If I browse to http://example.com/subdir (without the trailing /) it will list file.jpg , but the URL for it will be http://example.com/file.jpg. The parent directory link is http://example.com/example.com/.

If I 开发者_运维技巧browse to http://example.com/subdir/ (with the trailing /) it will list file.jpg with the proper URL: http://example.com/subdir/file.jpg. However, the parent directory link is http://example.com/example.com/subdir/.

I'm very confused for what's going on and I'd love any help on this.

(Note that if I take off the final / in the mod_rewrite rule then going to http://example.com/subdir without the / will redirect to the http://example.com/example.com/subdir/ variant. Also, the parent directory for the listing at http://example.com/subdir/ changes to http://example.com/example.com/, which is almost correct.)

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This could be caused by a disabled DirectorySlash. So try to enable it or use this rule to do the same with mod_rewrite:

RewriteCond %{REQUEST_FILENAME} -d
RewriteRule .*[^/]$ %{REQUEST_URI}/ [L,R=301]