On Tue, Jun 16, 2020 at 9:53 PM Warner Losh <i...@bsdimp.com> wrote:
>
>
> On Tue, Jun 16, 2020 at 8:33 PM Ian Lepore <i...@freebsd.org> wrote:
>
>> On Tue, 2020-06-16 at 19:34 +0200, Kristof Provost wrote:
>> > On 16 Jun 2020, at 19:11, Ed Maste wrote:
>> > > On Tue, 16 Jun 2020 at 13:01, Ian Lepore <i...@freebsd.org> wrote:
>> > > >
>> > > > As much as I prefer doing it this way, style(9) doesn't allow for
>> > > > variable declarations inside a for() statement (or even inside a
>> > > > local
>> > > > block, which is just too 1980s for me, but it is still our
>> standard).
>> > >
>> > > Perhaps it's time to update style(9) to at least permit these uses, as
>> > > we've done with the blank line at the beginning of functions with no
>> > > local variables, and with braces around single-line bodies.
>> >
>> > We have 431 instances of `for (int i` in sys alone. It’s not so much a
>> > question of allowing it as acknowledging reality at this point.
>> >
>> > Best regards,
>> > Kristof
>>
>> Hmm, so we do. If you weed out sys/contrib, and device drivers
>> contributed by vendors, the number is a lot smaller, but still big
>> enough that we should just change the rules I think.
>>
>
> We should definitely just change the rules. There's no point in
> prohibiting it. Contributors have already voted with their feet
>
> diff --git a/share/man/man9/style.9 b/share/man/man9/style.9
> index 4e801bbcbe70..fd23d573eb00 100644
> --- a/share/man/man9/style.9
> +++ b/share/man/man9/style.9
> @@ -592,8 +592,6 @@ not
> Parts of a
> .Ic for
> loop may be left empty.
> -Do not put declarations
> -inside blocks unless the routine is unusually complicated.
> .Bd -literal
> for (; cnt < 15; cnt++) {
> stmt1;
>
> Though the block doesn't start until { so int i; in the commit technically
> doesn't violate this rule. We violate it in dozens of other ways than this.
>
Re-reading the thread, it seems there's a consensus to change.
https://reviews.freebsd.org/D25312
> Warner
>
>
>
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