Re: Why (substring "abc" 0 4) does not return "abc" instead of an error?

[Lennart Borgman]

On Mon, Jul 16, 2012 at 10:30 PM, Stefan Monnier
<address@hidden> wrote:
>> I see the benefit of having
>
>>   (substring "abc" 0 4)
>>     => "abc"
>
>> in terms of simplifying Elisp writing -- and I still fail
>> to see the harm (but maybe Pascal will tell me where he has
>> been bitten by this.)
>
> I don't think such a semantics is harmful, indeed.  It's just different,
> and I don't think this issue affects enough code that it's worth
> changing from one to the other, nor is it worth adding a special
> argument for it.

I really disagree. If someone take the effort to implement the added
argument then please accept it as part of Emacs. (If no one does then
just let it be.)