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Message-ID: <23c8ebaa0921d5597df9fc1d6cbbcc4f354f80c5.camel@perches.com>
Subject: Re: [RFC PATCH 1/5] checkpatch: improve handling of revert commits
From:   Joe Perches <joe@perches.com>
To:     Denis Efremov <efremov@linux.com>, linux-kselftest@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org, linux-block@vger.kernel.org,
        Jens Axboe <axboe@kernel.dk>, Jiri Kosina <jkosina@suse.cz>,
        Willy Tarreau <w@1wt.eu>
Date:   Wed, 18 Aug 2021 14:22:23 -0700
In-Reply-To: <3d347d4b-1576-754f-8633-ba6084cc0661@linux.com>
References: <20210818154646.925351-1-efremov@linux.com>
         <20210818154646.925351-2-efremov@linux.com>
         <cc5801790fea258e20fa6b7e26de7806ae8e0dda.camel@perches.com>
         <3d347d4b-1576-754f-8633-ba6084cc0661@linux.com>
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Hey Denis:

Try this one please and let me know what you think...

---
 scripts/checkpatch.pl | 31 +++++++++++++------------------
 1 file changed, 13 insertions(+), 18 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 161ce7fe5d1e5..4e2e79eff9b8c 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3196,26 +3196,21 @@ sub process {
 				$orig_commit = lc($1);
 			}
 
-			$short = 0 if ($line =~ /\bcommit\s+[0-9a-f]{12,40}/i);
-			$long = 1 if ($line =~ /\bcommit\s+[0-9a-f]{41,}/i);
-			$space = 0 if ($line =~ /\bcommit [0-9a-f]/i);
-			$case = 0 if ($line =~ /\b[Cc]ommit\s+[0-9a-f]{5,40}[^A-F]/);
-			if ($line =~ /\bcommit\s+[0-9a-f]{5,}\s+\("([^"]+)"\)/i) {
-				$orig_desc = $1;
-				$hasparens = 1;
-			} elsif ($line =~ /\bcommit\s+[0-9a-f]{5,}\s*$/i &&
-				 defined $rawlines[$linenr] &&
-				 $rawlines[$linenr] =~ /^\s*\("([^"]+)"\)/) {
-				$orig_desc = $1;
-				$hasparens = 1;
-			} elsif ($line =~ /\bcommit\s+[0-9a-f]{5,}\s+\("[^"]+$/i &&
-				 defined $rawlines[$linenr] &&
-				 $rawlines[$linenr] =~ /^\s*[^"]+"\)/) {
-				$line =~ /\bcommit\s+[0-9a-f]{5,}\s+\("([^"]+)$/i;
+			my $input = $line;
+			for (my $n = 0; $n < 2; $n++) {
+				$input .= " $rawlines[$linenr + $n]" if ($#lines >= $linenr + $n);
+			}
+
+			$short = 0 if ($input =~ /\bcommit\s+[0-9a-f]{12,40}/i);
+			$long = 1 if ($input =~ /\bcommit\s+[0-9a-f]{41,}/i);
+			$space = 0 if ($input =~ /\bcommit [0-9a-f]/i);
+			$case = 0 if ($input =~ /\b[Cc]ommit\s+[0-9a-f]{5,40}[^A-F]/);
+			if ($input =~ /\bcommit\s+[0-9a-f]{5,}\s+($balanced_parens)/i) {
 				$orig_desc = $1;
-				$rawlines[$linenr] =~ /^\s*([^"]+)"\)/;
-				$orig_desc .= " " . $1;
 				$hasparens = 1;
+				# Always strip leading/trailing parens then double quotes if existing
+				$orig_desc = substr($orig_desc, 1, -1);
+				$orig_desc = substr($orig_desc, 1, -1) if ($orig_desc =~ /^".*"$/);
 			}
 
 			($id, $description) = git_commit_info($orig_commit,