Re: humble proposal: New special form progn-1

[Tino Calancha <tino.calancha@gmail.com>]

On Wed, 27 Jul 2016, Andreas Schwab wrote:

> On Mi, Jul 27 2016, Tino Calancha <tino.calancha@gmail.com> wrote:
>
>> * Other way to acomplish one usual task.
>
> How usual is that task?
I will estimate it:
Running following command on lisp dir:

find lisp -type f -exec grep --color -InH -e regexp \{\} +

1) regexp = '(prog1 '
    matches: 462
2) regexp = '(prog2 '
    matches: 20
3) regexp = '(progn '
    matches: 2262

I would say similar order of magnitude as 1), i.e.,  ~ 20% of 3)



>> * Allow lower indentation level (see below):
>>
>> (progn-1
>>   (form1)
>>   (form2)
>>   (form3)
>>   .
>>   .
>>   .
>>   (formN-1)
>>   (formN))
>
> (progn
>  (form1)
>  ...
>  (prog1
>      (formN-1)
>    (formN)))
>
Its also nice; maybe slightly more readable the first one.
You know, it's matter of taste: 2 forms VS 1 form, like:
(let ((i 1)
       (j 2))
   (form))

compared with:

(let ((i 1))
   (let ((j 2))
     (form)))

Tino