(un)setting environment variables from a Portfile

[Gustaf Neumann]

The leading colons denote a reference to a global variable.

If a Tcl command is evaluated in a tclsh at the top-level these
are not needed, on e.g. proc-scope these are required. It never
hurts to use it to make it clear one is referring to a global variable.

-g

Am 11.01.15 um 19:58 schrieb René J.V. Bertin:
> set environment variable
>      set ::env(FOO) "some value"
>
> unset environment variable
>      unset ::env(FOO)
> Thanks :)
>
> Is the namespace (?) separator required?
>
>