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SubjectRe: [PATCH] checkpatch: warn for non-standard fixes tag style
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On Mon, 2022-08-29 at 17:53 +0200, Niklas Söderlund wrote:
> Add a warning for fixes tags that does not fall in line with the
> standards specified by the community.
>
> Signed-off-by: Niklas Söderlund <niklas.soderlund@corigine.com>
> Reviewed-by: Simon Horman <simon.horman@corigine.com>
> Reviewed-by: Louis Peens <louis.peens@corigine.com>
> ---
> Documentation/dev-tools/checkpatch.rst | 6 ++++
> scripts/checkpatch.pl | 41 ++++++++++++++++++++++++++
> 2 files changed, 47 insertions(+)
>
> diff --git a/Documentation/dev-tools/checkpatch.rst b/Documentation/dev-tools/checkpatch.rst
> index b52452bc2963..8164f362a2fc 100644
> --- a/Documentation/dev-tools/checkpatch.rst
> +++ b/Documentation/dev-tools/checkpatch.rst
> @@ -612,6 +612,12 @@ Commit message
>
> See: https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-your-changes
>
> + **BAD_FIXES_TAG**
> + The fixes line does not fall in line with the standards specified by the
> + community.
> +
> + See: https://www.kernel.org/doc/html/latest/process/submitting-patches.html#describe-your-changes
> +
>
> Comparison style
> ----------------
> diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
> index 79e759aac543..9b8cdc582fb5 100755
> --- a/scripts/checkpatch.pl
> +++ b/scripts/checkpatch.pl
> @@ -3140,6 +3140,47 @@ sub process {
> }
> }
>
> +# Check Fixes: styles is correct
> + if (!$in_header_lines && $line =~ /^fixes:/i) {
> + my $orig_commit = "";
> + my $id = "0123456789ab";
> + my $title = "commit title";
> + my $tag_case = 1;
> + my $tag_space = 1;
> + my $id_length = 1;
> + my $id_case = 1;
> + my $title_has_quotes = 0;
> +
> + if ($line =~ /(fixes:)\s+([0-9a-f]{5,})\s+($balanced_parens)/i) {

Maybe use fixes:? so the colon is not required in poorly formed uses

> + my $tag = $1;
> + $orig_commit = $2;
> + $title = $3;
> +
> + $tag_case = 0 if $tag eq "Fixes:";
> + $tag_space = 0 if ($line =~ /^fixes: [0-9a-f]{5,} ($balanced_parens)/i);

fixes:? here too

Pity there's no simple way to consolidate this git commit test block
with the existing git id commit block.

> +
> + $id_length = 0 if ($orig_commit =~ /^[0-9a-f]{12}$/i);
> + $id_case = 0 if ($orig_commit !~ /[A-F]/);
> +
> + # Always strip leading/trailing parens then double quotes if existing
> + $title = substr($title, 1, -1);
> + if ($title =~ /^".*"$/) {
> + $title = substr($title, 1, -1);
> + $title_has_quotes = 1;
> + }
> + }
> +
> + ($id, $title) = git_commit_info($orig_commit, $id,
> + $title);
> +
> + if ($tag_case || $tag_space || $id_length || $id_case ||
> + !$title_has_quotes) {
> + WARN("BAD_FIXES_TAG",
> + "Please use correct Fixes: style 'Fixes: <12 chars of sha1> (\"<title line>\")' - ie: 'Fixes: $id (\"$title\")'\n" . $herecurr);
> +
> + }
> + }
> +
> # Check email subject for common tools that don't need to be mentioned
> if ($in_header_lines &&
> $line =~ /^Subject:.*\b(?:checkpatch|sparse|smatch)\b[^:]/i) {

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