[vtk-developers] [ANNOUNCE] New module system landing

[Ben Boeckel]

On Fri, Feb 01, 2019 at 18:12:49 -0500, David Thompson wrote:
> REQUIRE/ATTEMPT/AVOID/FORBID make the most sense to me.  I could also
> come up with quite a few alternate words for each option if you
> like... :-)
> 
>   YES = REQUIRE = FORCE = ENABLE = NEED = COMPEL = INCLUDE
>   WANT = ATTEMPT = TRY = PREFER = YEARN_FOR
>   DONT_WANT = AVOID = CANCEL = UNWANTED = SHUN
>   NO = FORBID = DISABLE = REJECT = DISQUALIFY = PREVENT = EXCLUDE
> 
> It would be nice, as David Gobbi suggested, to warn when option-valued
> cache variables are set to a string that is not an accepted option.

It errors out right now with a message listing the valid values.

--Ben