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[PATCH] checkpatch: Reduce git commit description style false positives

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Joe Perches

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May 27, 2016, 5:30:08 PM5/27/16
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Some lines in a commit log appear to be commit SHA1 ids like:

ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 0123456789ab ("commit description")'
Link: http://lkml.kernel.org/r/40e03fd7aaf1f55c75d787128d6d17c5...@virtuozzo.com

Reduce the false positives.

Reported-by: Andrew Morton <ak...@linux-foundation.org>
Signed-off-by: Joe Perches <j...@perches.com>
---
scripts/checkpatch.pl | 1 +
1 file changed, 1 insertion(+)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 6750595..4904ced 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2454,6 +2454,7 @@ sub process {

# Check for git id commit length and improperly formed commit descriptions
if ($in_commit_log && !$commit_log_possible_stack_dump &&
+ $line !~ /^\s*(?:Link|Patchwork|http|BugLink):/i &&
($line =~ /\bcommit\s+[0-9a-f]{5,}\b/i ||
($line =~ /\b[0-9a-f]{12,40}\b/i &&
$line !~ /[\<\[][0-9a-f]{12,40}[\>\]]/i &&
--
2.8.0.rc4.16.g56331f8

Joe Perches

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May 27, 2016, 6:00:06 PM5/27/16
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On Fri, 2016-05-27 at 14:50 -0700, Andrew Morton wrote:
> On Fri, 27 May 2016 14:20:42 -0700 Joe Perches <j...@perches.com>
> wrote:
>
> >
> > Some lines in a commit log appear to be commit SHA1 ids like:
> >
> > ERROR: Please use git commit description style 'commit <12+ chars of
> > sha1> ("<title line>")' - ie: 'commit 0123456789ab ("commit
> > description")'
> > Link: http://lkml.kernel.org/r/40e03fd7aaf1f55c75d787128d6d17c5a7122
> > 6c2.146435855...@virtuozzo.com
> >
> > Reduce the false positives.
> >
> hm, I still get the falsie when checking this very patch.

because commit 0123456789ab doesn't exist

Andrew Morton

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May 27, 2016, 6:00:07 PM5/27/16
to
On Fri, 27 May 2016 14:20:42 -0700 Joe Perches <j...@perches.com> wrote:

> Some lines in a commit log appear to be commit SHA1 ids like:
>
> ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 0123456789ab ("commit description")'
> Link: http://lkml.kernel.org/r/40e03fd7aaf1f55c75d787128d6d17c5...@virtuozzo.com
>
> Reduce the false positives.
>

hm, I still get the falsie when checking this very patch.


From: Joe Perches <j...@perches.com>
Subject: checkpatch: reduce git commit description style false positives

Some lines in a commit log appear to be commit SHA1 ids like:

ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 0123456789ab ("commit description")'
Link: http://lkml.kernel.org/r/40e03fd7aaf1f55c75d787128d6d17c5...@virtuozzo.com

Reduce the false positives.

Link: http://lkml.kernel.org/r/eda977eaa8328fef42bb3c87935d9...@perches.com
Signed-off-by: Joe Perches <j...@perches.com>
Reported-by: Andrew Morton <ak...@linux-foundation.org>
Signed-off-by: Andrew Morton <ak...@linux-foundation.org>
---

scripts/checkpatch.pl | 1 +
1 file changed, 1 insertion(+)

diff -puN scripts/checkpatch.pl~checkpatch-reduce-git-commit-description-style-false-positives scripts/checkpatch.pl
--- a/scripts/checkpatch.pl~checkpatch-reduce-git-commit-description-style-false-positives
+++ a/scripts/checkpatch.pl
@@ -2454,6 +2454,7 @@ sub process {

# Check for git id commit length and improperly formed commit descriptions
if ($in_commit_log && !$commit_log_possible_stack_dump &&
+ $line !~ /^\s*(?:Link|Patchwork|http|BugLink):/i &&
($line =~ /\bcommit\s+[0-9a-f]{5,}\b/i ||
($line =~ /\b[0-9a-f]{12,40}\b/i &&
$line !~ /[\<\[][0-9a-f]{12,40}[\>\]]/i &&
_


WARNING: Possible unwrapped commit description (prefer a maximum 75 chars per line)
#6:
ERROR: Please use git commit description style 'commit <12+ chars of sha1> ("<title line>")' - ie: 'commit 0123456789ab ("commit description")'


Perhaps we could special-case the "unwrapped commit description" as
well - the Link: lines are almost always too wide.
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