linux-kernel - Re: [PATCH v5] checkpatch: add support to check 'Fixes:' tag format

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Date:   Sun, 3 May 2020 15:51:39 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     Wang YanQing <udknight@...il.com>, Joe Perches <joe@...ches.com>,
        Andy Whitcroft <apw@...onical.com>,
        kernel-janitors@...r.kernel.org, linux-doc@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org,
        Alexei Starovoitov <alexei.starovoitov@...il.com>,
        Matteo Croce <mcroce@...hat.com>
Subject: Re: [PATCH v5] checkpatch: add support to check 'Fixes:' tag format

> “...

Can the character “Horizontal ellipsis” (U+2026) be occasionally nicer
instead of three separate dots?

> The check supports below formats:

I would prefer the explicit wording for the support of (Unicode) ellipses
also in the shown commit titles.
Will the document “submitting-patches.rst” need corresponding adjustments?

> Because after GIT_COMMIT_ID supports 'Fixes:' tag format check, it could do
> the same check as the UNKNOWN_COMMIT_ID, so we don't need UNKNOWN_COMMIT_ID
> anymore and I decide to delete it.

Would you like to propose related software adjustments?

> Note: this patch also fixes double quotation mark issue for normal git
>       commit description, and now it supports double quotation mark in
>       title line, for example:
>       Commit e33e2241e272 ("Revert "cfg80211: Use 5MHz bandwidth by default
>       when checking usable channels"")

Do you care to achieve a safer data format description also for this use case?

>  This is the v5 version, and I have tested it with below command:

How do you think about to reuse the analysis approach outside
the script “checkpatch.pl”?

>  v5:
>  1: Rebased on '[PATCH v2] checkpatch: fix can't check for too long invalid commit id'.

Are the software dependencies (and corresponding development challenges) growing?

…
> +++ b/scripts/checkpatch.pl
> @@ -2818,51 +2818,101 @@ sub process {
…
> +		     $line =~ /\bfixes:\s+[0-9a-f]{5,}\b/i ||

Would you like to reconsider the program organisation according to
the application of regular expressions?

…
> +			if (defined($id) && $has_parens_and_dqm && ($orig_desc ne $description)) {
> +			    # Allow short description without too short!

Will another wording adjustment become relevant here?

> +			    if ($prefix eq "Fixes:") {
> +				if (length($orig_desc) >= length($description)/2) {

Will the structure of the commit title matter any more?

…
> +					$diagnostics .= "The title is too abbreviated, at least half of orignial commit title is necessary.\n";

Will the word “original” be more appropriate here?
(Why did you not integrate my previous patch review comment?)

…
> +				      "Please use git commit description style '$prefix <$sha1_length_min+ chars of sha1> (\"<$title>\")' - ie: '${init_char}" . substr($prefix, 1) .
> +				      " $id (\"$description\")'\n" . $diagnostics . $herecurr);

Can error diagnostics become multi-line?

Regards,
Markus