[mercury-users] getopt

[Fergus Henderson]

On 24-Feb-2003, Michael Day <mikeday at yeslogic.com> wrote:
> 
> % :- pred option_default(option::out, option_data::out) is nondet.
> %       Nondeterministically returns all the options with their
> %       corresponding types and default values.
> 
> Why is this nondet rather than multi?

Hysterical raisons, I think -- the getopt module was written before we
supported "multi".

Unfortunately changing it to "multi" now would break any program using
getopt.  The breakage would be a kind that would be easy to fix, but
it would be a bit of a pain.

-- 
Fergus Henderson <fjh at cs.mu.oz.au>  |  "I have always known that the pursuit
The University of Melbourne         |  of excellence is a lethal habit"
WWW: <http://www.cs.mu.oz.au/~fjh>  |     -- the last words of T. S. Garp.
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