htaccess reading files from folder with conditional

structure in root is:

  ROOT\_public
  ROOT\_blog
  ROOT\_about

when something comes to domain.com/blog it will read root_blog (first) when something comes to domain.com/maps it will read root_maps (second) when comes everything else, it will read root_public folder .. (third)

third is doesnt work!

why?

RewriteEngine on 

# rewrite to trailing shash in domain/about and domain/maps 
RewriteRule ^(about|blog|docs)$ /$1/ [R]

# rewrite domain.com/about/something to /_about/something 
RewriteRule ^(about|blog|docs)/(.*)$ /_$1/$2/ 

# rewrite开发者_开发技巧 anything that doesn't start about/ or maps/ to _public 
RewriteCond %{REQUEST_URI} !^/(about|maps|docs)/
RewriteRule ^(.*)$ _public/$1

i havent idea, why its doesnt work. please help. thank you!

/somethingelse will be directed to _public/somethingelse _public/somethingelse will in turn be directed to _public/_public/somethingelse _public/_public/somethingelse ...etc.

You need to stop rewriting if already rewritten.

RewriteRule ^_ - [L]
RewriteCond %{REQUEST_URI} !^/(about|maps|docs)/
RewriteRule ^(.*)$ _public/$1

The added line will match anything starting with "_" and stop applying any rules below it.