Re: [PATCH 1/2] checkpatch: add check for tag Co-Developed-by

[Joe Perches <joe@perches.com>]

On Mon, 2018-03-05 at 14:58 +1100, Tobin C. Harding wrote:
> From: Joe Perches <joe@perches.com>

I still think this "Co-Developed-by" stuff is unnecessary.

> Recently signature tag Co-Developed-by was added to the
> kernel (Documentation/process/5.Posting.rst). checkpatch.pl doesn't know
> about it yet. All prior tags used all lowercase characters except for first
> character. Checks for this format had to be re-worked to allow for the
> new tag.
> 
> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> 
> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Tobin C. Harding <me@tobin.cc>
> ---
>  scripts/checkpatch.pl | 58 +++++++++++++++++++++++++++++++--------------------
>  1 file changed, 35 insertions(+), 23 deletions(-)
> 
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 3d4040322ae1..fbe2ae2d035f 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -461,16 +461,18 @@ our $logFunctions = qr{(?x:
>  	seq_vprintf|seq_printf|seq_puts
>  )};
>  
> -our $signature_tags = qr{(?xi:
> -	Signed-off-by:|
> -	Acked-by:|
> -	Tested-by:|
> -	Reviewed-by:|
> -	Reported-by:|
> -	Suggested-by:|
> -	To:|
> -	Cc:
> -)};
> +our @valid_signatures = (
> +	"Signed-off-by:",
> +	"Acked-by:",
> +	"Tested-by:",
> +	"Reviewed-by:",
> +	"Reported-by:",
> +	"Suggested-by:",
> +	"Co-Developed-by:",
> +	"To:",
> +	"Cc:"
> +);
> +my $signature_tags = "(?x:" . join('|', @valid_signatures) . ")";
>  
>  our @typeListMisordered = (
>  	qr{char\s+(?:un)?signed},
> @@ -2193,6 +2195,17 @@ sub pos_last_openparen {
>  	return length(expand_tabs(substr($line, 0, $last_openparen))) + 1;
>  }
>  
> +sub get_preferred_sign_off {
> +	my ($sign_off) = @_;
> +
> +	foreach my $sig (@valid_signatures) {
> +		if (lc($sign_off) eq lc($sig)) {
> +			return $sig;
> +		}
> +	}
> +	return "";
> +}
> +
>  sub process {
>  	my $filename = shift;
>  
> @@ -2499,35 +2512,34 @@ sub process {
>  			my $sign_off = $2;
>  			my $space_after = $3;
>  			my $email = $4;
> -			my $ucfirst_sign_off = ucfirst(lc($sign_off));
> +			my $preferred_sign_off = ucfirst(lc($sign_off));
>  
> -			if ($sign_off !~ /$signature_tags/) {
> +			if ($sign_off !~ /$signature_tags/i) {
>  				WARN("BAD_SIGN_OFF",
>  				     "Non-standard signature: $sign_off\n" . $herecurr);
> -			}
> -			if (defined $space_before && $space_before ne "") {
> +			} elsif ($sign_off !~ /$signature_tags/) {
> +				$preferred_sign_off = get_preferred_sign_off($sign_off);
>  				if (WARN("BAD_SIGN_OFF",
> -					 "Do not use whitespace before $ucfirst_sign_off\n" . $herecurr) &&
> +					 "'$preferred_sign_off' is the preferred signature form\n" . $herecurr) &&
>  				    $fix) {
> -					$fixed[$fixlinenr] =
> -					    "$ucfirst_sign_off $email";
> +					$fixed[$fixlinenr] = "$preferred_sign_off $email";
>  				}
>  			}
> -			if ($sign_off =~ /-by:$/i && $sign_off ne $ucfirst_sign_off) {
> +			if (defined $space_before && $space_before ne "") {
>  				if (WARN("BAD_SIGN_OFF",
> -					 "'$ucfirst_sign_off' is the preferred signature form\n" . $herecurr) &&
> +					 "Do not use whitespace before $preferred_sign_off\n" . $herecurr) &&
>  				    $fix) {
>  					$fixed[$fixlinenr] =
> -					    "$ucfirst_sign_off $email";
> +					    "$preferred_sign_off $email";
>  				}
> -
>  			}
> +
>  			if (!defined $space_after || $space_after ne " ") {
>  				if (WARN("BAD_SIGN_OFF",
> -					 "Use a single space after $ucfirst_sign_off\n" . $herecurr) &&
> +					 "Use a single space after $preferred_sign_off\n" . $herecurr) &&
>  				    $fix) {
>  					$fixed[$fixlinenr] =
> -					    "$ucfirst_sign_off $email";
> +					    "$preferred_sign_off $email";
>  				}
>  			}
>