[wp-hackers] rewrite_rules filter

[Ryan Boren]

Another "public notepad" message.

The rewrite_rules filter is applied in options-permalink.  This allows
extra RewriteRule strings to be added to the output generated for
htaccess.  However, these additional rules are not available for
PATH_INFO processing.  To get the added rules in both places, the
rewrite_rules filter needs to be called in rewrite_rules() where it can
add entries directly into the rules array.  This way plugins that
manipulate rewrite rules will also work for those using PATH_INFO rather
than htaccess.

Ryan