[PATCH 2/2] checkpatch: allow Closes tags with links

[Matthieu Baerts <matthieu.baerts@tessares.net>]

As a follow-up of the previous patch modifying the documentation to
allow using the "Closes:" tag, checkpatch.pl is updated accordingly.

checkpatch.pl now mentions the "Closes:" tag between brackets to express
the fact it should be used only if it makes sense.

While at it, checkpatch.pl will not complain if the "Closes" tag is used
with a "long" line, similar to what is done with the "Link" tag.

Fixes: 76f381bb77a0 ("checkpatch: warn when unknown tags are used for links")
Fixes: d7f1d71e5ef6 ("checkpatch: warn when Reported-by: is not followed by Link:")
Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/373
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
---
 scripts/checkpatch.pl | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index bd44d12965c9..d6376e0b68cc 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3158,14 +3158,14 @@ sub process {
 				}
 			}
 
-# check if Reported-by: is followed by a Link:
+# check if Reported-by: is followed by a Link: (or Closes:) tag
 			if ($sign_off =~ /^reported(?:|-and-tested)-by:$/i) {
 				if (!defined $lines[$linenr]) {
 					WARN("BAD_REPORTED_BY_LINK",
-					     "Reported-by: should be immediately followed by Link: to the report\n" . $herecurr . $rawlines[$linenr] . "\n");
-				} elsif ($rawlines[$linenr] !~ m{^link:\s*https?://}i) {
+					     "Reported-by: should be immediately followed by Link: (or Closes:) to the report\n" . $herecurr . $rawlines[$linenr] . "\n");
+				} elsif ($rawlines[$linenr] !~ m{^(link|closes):\s*https?://}i) {
 					WARN("BAD_REPORTED_BY_LINK",
-					     "Reported-by: should be immediately followed by Link: with a URL to the report\n" . $herecurr . $rawlines[$linenr] . "\n");
+					     "Reported-by: should be immediately followed by Link: (or Closes:) with a URL to the report\n" . $herecurr . $rawlines[$linenr] . "\n");
 				}
 			}
 		}
@@ -3250,8 +3250,8 @@ sub process {
 					# file delta changes
 		      $line =~ /^\s*(?:[\w\.\-\+]*\/)++[\w\.\-\+]+:/ ||
 					# filename then :
-		      $line =~ /^\s*(?:Fixes:|Link:|$signature_tags)/i ||
-					# A Fixes: or Link: line or signature tag line
+		      $line =~ /^\s*(?:Fixes:|Link:|Closes:|$signature_tags)/i ||
+					# A Fixes:, Link:, Closes: or signature tag line
 		      $commit_log_possible_stack_dump)) {
 			WARN("COMMIT_LOG_LONG_LINE",
 			     "Possible unwrapped commit description (prefer a maximum 75 chars per line)\n" . $herecurr);
@@ -3266,13 +3266,13 @@ sub process {
 
 # Check for odd tags before a URI/URL
 		if ($in_commit_log &&
-		    $line =~ /^\s*(\w+):\s*http/ && $1 ne 'Link') {
+		    $line =~ /^\s*(\w+):\s*http/ && $1 ne 'Link' && $1 ne 'Closes') {
 			if ($1 =~ /^v(?:ersion)?\d+/i) {
 				WARN("COMMIT_LOG_VERSIONING",
 				     "Patch version information should be after the --- line\n" . $herecurr);
 			} else {
 				WARN("COMMIT_LOG_USE_LINK",
-				     "Unknown link reference '$1:', use 'Link:' instead\n" . $herecurr);
+				     "Unknown link reference '$1:', use 'Link:' (or 'Closes:') instead\n" . $herecurr);
 			}
 		}
 

-- 
2.39.2