[PATCH v4 3/5] checkpatch: use a list of "link" tags

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The following commit will allow the use of a similar "link" tag.

Because there is a possibility that other similar tags will be added in
the future and to reduce the number of places where the code will be
modified to allow this new tag, a list with all these "link" tags is now
used.

Two variables are created from it: one to search for such tags and one
to print all tags in a warning message.

Suggested-by: Joe Perches <joe@xxxxxxxxxxx>
Signed-off-by: Matthieu Baerts <matthieu.baerts@xxxxxxxxxxxx>
---
v4:
 - "Reported-by:" should be followed by a "Closes:" tag. (Thorsten
   Leemhuis)

v3:
 - new patch. (Joe Perches)
---
 scripts/checkpatch.pl | 24 ++++++++++++++++++++----
 1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index b170fc7ef258..1647ef72480e 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -620,6 +620,22 @@ our $signature_tags = qr{(?xi:
 	Cc:
 )};
 
+our @link_tags = qw(Link);
+
+#Create a search and print patterns for all these strings to be used directly below
+our $link_tags_search = "";
+our $link_tags_print = "";
+foreach my $entry (@link_tags) {
+	if ($link_tags_search ne "") {
+		$link_tags_search .= '|';
+		$link_tags_print .= ' or ';
+	}
+	$entry .= ':';
+	$link_tags_search .= $entry;
+	$link_tags_print .= "'$entry'";
+}
+$link_tags_search = "(?:${link_tags_search})";
+
 our $tracing_logging_tags = qr{(?xi:
 	[=-]*> |
 	<[=-]* |
@@ -3250,8 +3266,8 @@ 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_tags_search|$signature_tags)/i ||
+					# A Fixes:, link 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 +3282,13 @@ 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/ && $1 !~ /^$link_tags_search$/) {
 			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_tags_print instead\n" . $herecurr);
 			}
 		}
 

-- 
2.39.2




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