linux-kernel - Re: [PATCH v2] checkpatch: Check for space after "else" keyword

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Date:   Sun, 05 Aug 2018 16:57:08 -0700
From:   Joe Perches <joe@...ches.com>
To:     Michal Zylowski <michal.zylowski@...el.com>, apw@...onical.com
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] checkpatch: Check for space after "else" keyword

On Sun, 2018-08-05 at 22:42 +0200, Michal Zylowski wrote:
> Current checkpatch implementation permits notation like:
> } else{
> in kernel code.
> It looks like oversight and inconsistency in checkpatch rules (e.g.
> instruction like 'do' is tested).
> 
> Add regex for checking space after 'else' keyword and trigger error if
> space is not present.
> 
> Signed-off-by: Michal Zylowski <michal.zylowski@...el.com>
> ---
>  scripts/checkpatch.pl | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 447857f..81617b8 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -4483,7 +4483,7 @@ sub process {
>  
>  #need space before brace following if, while, etc
>  		if (($line =~ /\(.*\)\{/ && $line !~ /\($Type\)\{/) ||
> -		    $line =~ /do\{/) {
> +		    $line =~ /\b(?:else|do)\{/) {
>  			if (ERROR("SPACING",
>  				  "space required before the open brace '{'\n" . $herecurr) &&
>  			    $fix) {

Thanks.

btw: the fix block blow also should be updated with else