linux-kernel - Re: [PATCH 00/18] use semicolons rather than commas to separate statements

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Date:   Tue, 29 Sep 2020 15:41:08 +0300
From:   Dan Carpenter <dan.carpenter@...cle.com>
To:     Ard Biesheuvel <ardb@...nel.org>
Cc:     Julia Lawall <Julia.Lawall@...ia.fr>, linux-iio@...r.kernel.org,
        drbd-dev@...n.linbit.com,
        Valdis Klētnieks <valdis.kletnieks@...edu>,
        David Lechner <david@...hnology.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        linux-wireless@...r.kernel.org,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        kernel-janitors@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-stm32@...md-mailman.stormreply.com,
        linux-block@...r.kernel.org, linux-ide@...r.kernel.org,
        Linux Crypto Mailing List <linux-crypto@...r.kernel.org>,
        Joe Perches <joe@...ches.com>,
        linux-amlogic@...ts.infradead.org,
        Thomas Gleixner <tglx@...utronix.de>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        openipmi-developer@...ts.sourceforge.net,
        linux-clk@...r.kernel.org,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        Jerome Brunet <jbrunet@...libre.com>
Subject: Re: [PATCH 00/18] use semicolons rather than commas to separate
 statements

On Tue, Sep 29, 2020 at 02:20:00PM +0200, Ard Biesheuvel wrote:
> On Sun, 27 Sep 2020 at 21:56, Julia Lawall <Julia.Lawall@...ia.fr> wrote:
> >
> > These patches replace commas by semicolons.
> 
> 
> Why?
> 

In the best case, these commas are just uninitentional mess, like typing
an extra space character or something.  I've looked at them before and
one case I see where they are introduced is when people convert a
struct initializer to code.

-	struct foo {
-		.a = 1,
-		.b = 2,
 		...
+	foo.a = 1,
+	foo.b = 2,

The times where commas are used deliberately to replace curly braces are
just evil.  Either way the code is cleaner with semi-colons.

regards,
dan carpenter