[Qemu-trivial] [PATCH] checkpatch: Exempt long URLs

[Eric Blake <eblake@redhat.com>]

Sometimes, we want to refer to really long URLs, but checkpatch
balks, and we have to manually bypass the check.  URL shorterners
may be nice at reducing long links, but it's hard to guarantee the
shortened link will live as long as the real target, and it is
also nice to see the original target without having to load the
shortened URL through a browser.  So exempt a line containing
only a URL from the long-line syntax check.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Eric Blake <eblake@redhat.com>
---
 scripts/checkpatch.pl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 1b4b812e28f..0d3f753c665 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1447,9 +1447,10 @@ sub process {
 # check we are in a valid source file if not then ignore this hunk
 		next if ($realfile !~ /$SrcFile/);

-#90 column limit
+#90 column limit; exempt URLs, if no other words on line
 		if ($line =~ /^\+/ &&
 		    !($line =~ /^\+\s*"[^"]*"\s*(?:\s*|,|\)\s*;)\s*$/) &&
+		    !($rawline =~ /^[^[:alnum:]]*https?:\S*$/) &&
 		    $length > 80)
 		{
 			if ($length > 90) {
-- 
2.14.3