[CMake] PARENT_SCOPE for unset()?

[David Cole]

On Thu, Feb 9, 2012 at 2:22 PM, Alexander Neundorf
<a.neundorf-work at gmx.net>wrote:

> On Thursday 09 February 2012, Robert Dailey wrote:
> > It would seem useful to have a PARENT_SCOPE option for the unset()
> command,
> > just like its set() counterpart. Is there a particular reason why it does
> > not have it now?
>
> No, I think there is not particular reason.
>
> Alex
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Does:

  set(var PARENT_SCOPE)

have the intended effect?

(If so, you could use that until such time as PARENT_SCOPE is added to
unset.)
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