Default Controller

[eluser]kunitsuji From Japan[/eluser]
Hello of you
I cannot explain well because I cannot speak English.

Example.
$route['default_controller'] = "welcome";
controllers/welcome.php ==> http://domain.com/index.php ==> welcome (OK)
controllers/foo.php ==> http://domain.com/index.php/foo ==> foo (OK)
http://domain.com/index.php/foe ==> 404 not found (OK)
controllers/subdir/foe.php ==> http://domain.com/index.php/subdir/foe/ ==> foe (OK)
http://domain.com/index.php/subdir/foo/ ==> welcome (?)
http://domain.com/index.php/subdir/bar/ ==> 404 not found(OK)

When thinking about the example
If it becomes 404 when the one that doesn't exist in the subdirectory is
specified ,
I thought that when only the subdirectory was specified to 404 usual.