tracking changes to env[''PATH_INFO'']

Ralph Shnelvar
Wed, 03 Feb 2010 14:32:50 -0000

I am using validates_captcha ... which for reasons I do not understand
hooks into middleware.

validates_captcha is getting a bit upset (it dumps the stack and then
rescues itself) when it sees
  env[''PATH_INFO'']
equal to
  /undefined

Thus _something_ is setting env[''PATH_INFO''] to undefined ...
and I
would sure like to know what it is.

How can I set things up to see what line of code is doing that?
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