Why not all Cyrillic. characters pass in RewriteRule?

Question

Regular Expressions

Hello, I have the following rule:

AddDefaultCharset utf-8
RewriteEngine on
RewriteBase /
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule    ^([А-Яа-я0-9]*)$    index.php?q=$1

when using some characters (C, for example), it does not work. What could be the problem? Thank you.

Answer 1

At least in the fact that such rules are not written ... Look Here