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Date:   Thu, 24 Dec 2020 20:49:55 +0530
From:   Aditya <yashsri421@...il.com>
To:     joe@...ches.com
Cc:     lukas.bulwahn@...il.com,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] checkpatch: fix false positive for
 COMMIT_LOG_LONG_LINE with URLs

On 18/12/20 5:41 pm, Aditya Srivastava wrote:
> Currently checkpatch warns for long line in commit messages even for
> URL lines.
> 
> An evaluation over v4.13..v5.8 showed that out of 11729 warnings for
> this class, around 299 are due to line starting with URL.
> 
> E.g., running checkpatch on commit 3cde818cd02b ("ASoC: topology:
> Consolidate how dtexts and dvalues are freed") reports this warning:
> 
> WARNING: Possible unwrapped commit description (prefer a maximum 75 chars per line)
> https://mailman.alsa-project.org/pipermail/alsa-devel/2019-January/144761.html
> 
> Avoid giving users warning for character limit for such cases, instead
> suggest them to prefix the URLs with "Link:"
> 
> Signed-off-by: Aditya Srivastava <yashsri421@...il.com>
> ---
> changes in v2:
> - Fix coding style ('} else {')
> - Make the URL check follow RFC 3986 style
> - Give warning only if the URL is first non-whitespace of the line
> - Set $commit_log_long_line only for else case
> - Fix the warning count with exact figures and according to first non-space char as URL
> 
>  scripts/checkpatch.pl | 11 ++++++++---
>  1 file changed, 8 insertions(+), 3 deletions(-)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index abd5a3d2e913..bf77bd0b22cf 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -3032,9 +3032,14 @@ sub process {
>  		      $line =~ /^\s*(?:Fixes:|Link:|$signature_tags)/i ||
>  					# A Fixes: or Link: line or signature tag line
>  		      $commit_log_possible_stack_dump)) {
> -			WARN("COMMIT_LOG_LONG_LINE",
> -			     "Possible unwrapped commit description (prefer a maximum 75 chars per line)\n" . $herecurr);
> -			$commit_log_long_line = 1;
> +			if ($line =~ /^\s*\b[a-z][\w\.\+\-]*:\/\/\S+/i) {
> +				WARN("COMMIT_LOG_LONG_LINE",
> +				     "Consider prefixing the URL with 'Link:'\n" . $herecurr);
> +			} else {
> +				WARN("COMMIT_LOG_LONG_LINE",
> +				     "Possible unwrapped commit description (prefer a maximum 75 chars per line)\n" . $herecurr);
> +				$commit_log_long_line = 1;
> +			}
>  		}
>  
>  # Reset possible stack dump if a blank line is found
> 

Hi Joe
You probably missed this patch. Please review :)

Thanks
Aditya

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