Improvement for ENVIRONMENT definition

From http://stackoverflow.com/questions/30504...hat-causes

Adding the following to the start of the rewrite rules recreates the original ENV:VAR on each redirect (as well as leaving the REDIRECT_VAR versions there) if they're needed:

Code:

RewriteCond %{ENV:REDIRECT_VAR} !^$
RewriteRule .* - [E=VAR:%{ENV:REDIRECT_VAR}]

Bonfire

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