y always remains unchanged. Note also that the result is distinct from y:

   (-: +/) i.1
0

Thanks,

-- 
Raul

On Thu, Sep 11, 2014 at 3:13 PM, Jose Mario Quintana
<jose.mario.quint...@gmail.com> wrote:
> My only guess is:
> "m/y inserts successive verbs from the gerund m between items of y"
>
> So, if there is no "between items of y" inserts nothing and y remains
> unchanged; but, it seems to me that the Dictionary could be more assertive
> in this instance.
>
>
> On Thu, Sep 11, 2014 at 2:13 PM, Dan Bron <j...@bron.us> wrote:
>
>> Pepe wrote:
>> >  My only question is: Does the Dictionary support this behavior?
>>
>> > Raul responded:
>> >  Yes, it does.
>>
>> I replied:
>> >  I am intrigued.  Can you elaborate?
>>
>> Thomas followed-up:
>> >  I assumed that by not mentioning it, the implementation
>> >  is free to do what it chooses. It could be anything!
>>
>> That's what I think too.  The behavior is, in the strictest literal sense,
>> undefined.  But Raul differs. I'm interested in his rationale (which,
>> historically, has been both solid and instructive).
>>
>> -Dan
>>
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