linux-kernel - Re: [PATCH] checkpatch: add --fix option for OPEN

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Date:   Wed, 18 Nov 2020 10:39:43 -0800
From:   Joe Perches <joe@...ches.com>
To:     Dwaipayan Ray <dwaipayanray1@...il.com>
Cc:     linux-kernel-mentees@...ts.linuxfoundation.org,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Lukas Bulwahn <lukas.bulwahn@...il.com>
Subject: Re: [PATCH] checkpatch: add --fix option for OPEN_BRACE issues

On Thu, 2020-11-19 at 00:03 +0530, Dwaipayan Ray wrote:
> On Wed, Nov 18, 2020 at 11:44 PM Joe Perches <joe@...ches.com> wrote:
> > 
> > On Wed, 2020-11-18 at 18:10 +0530, Dwaipayan Ray wrote:
> > > Brace style misuses of the following types are now
> > > corrected:
> > []
> > > diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> > []
> > > @@ -3937,9 +3937,23 @@ sub process {
> > >                       #print "pre<$pre_ctx>\nline<$line>\nctx<$ctx>\nnext<$lines[$ctx_ln - 1]>\n";
> > > 
> > > 
> > >                       if ($ctx !~ /{\s*/ && defined($lines[$ctx_ln - 1]) && $lines[$ctx_ln - 1] =~ /^\+\s*{/) {
> > > -                             ERROR("OPEN_BRACE",
> > > -                                   "that open brace { should be on the previous line\n" .
> > > -                                     "$here\n$ctx\n$rawlines[$ctx_ln - 1]\n");
> > > +                             if (ERROR("OPEN_BRACE",
> > > +                                       "that open brace { should be on the previous line\n" .
> > > +                                             "$here\n$ctx\n$rawlines[$ctx_ln - 1]\n") &&
> > > +                                 $fix) {
> > > +                                     my $line1 = $rawlines[$ctx_ln - 2];
> > 
> > How are you sure that in a patch context this line always starts with /^\+/ ?
> 
> Hi,
> I followed it from the other fixes for OPEN_BRACE which were already
> there. In the patch context if the lines are added then only I think the fix
> should be triggered. Other instances should not be modified.

As far as I know there are no existing uses of --fix with OPEN_BRACE.