[erlang-bugs] Miss the key 'query_string' in the environment parameter when a ESI callback is called.

[Nicolas Charpentier]

Hi
Using the ESI feature of OTP R12B-3, I'm facing a bug.

I'm doing 'GET' requests and I'm expecting a key 'query_string' in the 
Env parameter passed to my callback module as described in the 
documentation (http://www.erlang.org/doc/man/mod_esi.html#Module:Function-3)

Obviously this value isn't mandatory as I can use the Input value but it 
seems to have a lack of documentation or a regression since OTP R10B-5.

I didn't tested with R10B-5 but looking at mod_esi.erl code the 
query_string value seemed to exist in the Env parameters.


I attach a patch to fix the problem.

Regards,

----
Nicolas Charpentier
http://charpi.net
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