what is my syntax error

[Victor Oppenheimer]

In my nginx.conf file on my Windows computerI have the following code in 
nginx.conf.

http { # http context specific to HTTP affecting all virtual servers

# force incoming URLs to lower case
     map $uri $lowercase {~ ^(.+)$ /$1};

When I run nginx -t I get the following error.

nginx: [emerg] invalid variable name in C:\nginx/conf/nginx.conf

What am I dong incorrectly?


Thanks,

    Victor


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