> You are asking how to inject an environment variable into the
> environment of a program that Emacs will run?  The way to do it is to
> bind process-environment around the call to call-process or similar,
> and add TMP=whatever to the value of process-environment inside the
> let form.  Example from comint.el:

>   (let ((process-environment
> 	 (nconc
>           (comint-term-environment)
> 	  (list (format "INSIDE_EMACS=%s,comint" emacs-version))
>           (when comint-pager
>             (if (stringp comint-pager)
>                 (list (format "PAGER=%s" comint-pager))
>               (error "comint-pager should be a string: %s" comint-pager)))
> 	  process-environment))

Thanks I will try this out later!

-- 
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