Simplify Apache rewriting directives

Use simpler regex patterns, existing backreferences, and faster lexicographic test where possible.

symfony/apache-pack/1.0/public/.htaccess

@@ -27,12 +27,12 @@ DirectoryIndex index.php
     # work in environments without path prefix as well, providing a safe, one-size
     # fits all solution. But as you do not need it in this case, you can comment
     # the following 2 lines to eliminate the overhead.
-    RewriteCond %{REQUEST_URI}::$1 ^(/.+)/(.*)::\2$
-    RewriteRule ^(.*) - [E=BASE:%1]
+    RewriteCond %{REQUEST_URI}::$0 ^(/.+)/(.*)::\2$
+    RewriteRule .* - [E=BASE:%1]
 
     # Sets the HTTP_AUTHORIZATION header removed by Apache
-    RewriteCond %{HTTP:Authorization} .
-    RewriteRule ^ - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
+    RewriteCond %{HTTP:Authorization} .+
+    RewriteRule ^ - [E=HTTP_AUTHORIZATION:%0]
 
     # Redirect to URI without front controller to prevent duplicate content
     # (with and without `/index.php`). Only do this redirect on the initial
@@ -45,15 +45,13 @@ DirectoryIndex index.php
     # - disable this feature by commenting the following 2 lines or
     # - use Apache >= 2.3.9 and replace all L flags by END flags and remove the
     #   following RewriteCond (best solution)
-    RewriteCond %{ENV:REDIRECT_STATUS} ^$
+    RewriteCond %{ENV:REDIRECT_STATUS} =""
     RewriteRule ^index\.php(?:/(.*)|$) %{ENV:BASE}/$1 [R=301,L]
 
     # If the requested filename exists, simply serve it.
     # We only want to let Apache serve files and not directories.
-    RewriteCond %{REQUEST_FILENAME} -f
-    RewriteRule ^ - [L]
-
     # Rewrite all other queries to the front controller.
+    RewriteCond %{REQUEST_FILENAME} !-f
     RewriteRule ^ %{ENV:BASE}/index.php [L]
 </IfModule>