Re: [PATCH v2] checkpatch: add new warnings to author signoff checks.

[Joe Perches]

On Mon, 2020-10-05 at 23:09 +0530, Dwaipayan Ray wrote:
> The author signed-off-by checks are currently very vague.
> Cases like same name or same address are not handled separately.
[]
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
[]
> +						if ($address1 =~ /(\S+)\+\S+(\@.*)/) {
> +							$address1 = $1.$2;

More common in this code is "$1" . "$2" not $1.$2

> @@ -6891,9 +6917,29 @@ sub process {
[]
> +			# 4 -> names match, addresses excuding mail extensions (subaddresses) match

excluding

perhaps "subaddress detail" instead of "mail extensions (subaddresses)"

And maybe add "from RFC 5233"

> +
> +			my $sob_msg = "'From: $author' != 'Signed-off-by: $author_sob'";
> +
> +			if ($authorsignoff == 0) {
> +				WARN("NO_AUTHOR_SIGN_OFF",
> +				     "Missing Signed-off-by: line by nominal patch author '$author'\n");
> +			} elsif ($authorsignoff == 2) {
> +				WARN("NO_AUTHOR_SIGN_OFF",
> +				     "From:/Signed-off-by: email name mismatch:\n$sob_msg\n");


Still no need for a newline to separate the output message.