[Openmcl-devel] Trunk and released version
Ron Garret
ron at flownet.com
Thu Aug 13 09:42:20 PDT 2009
On Aug 13, 2009, at 9:12 AM, Tim Bradshaw wrote:
> On 13 Aug 2009, at 15:55, Ron Garret wrote:
>
>> I'd call that a bug in the ANSI spec. It violates the principle of
>> least surprise for no benefit whatsoever. If X is unconditionally
>> bound to NIL then there is no point in even having it in scope when
>> the result-form is evaluated.
>
> I'm guessing it's for compatibility with DOTIMES.
But in the case of DOTIMES the iteration variable is rebound (or
assigned) to a potentially useful value. In the case of DOLIST it's
assigned (or rebound) to a constant (NIL) which cannot possibly serve
any useful purpose.
rg
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