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Message-Id: <1330605850-7873-4-git-send-email-apw@canonical.com>
Date:	Thu,  1 Mar 2012 12:44:08 +0000
From:	Andy Whitcroft <apw@...onical.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Joe Perches <joe@...ches.com>, linux-kernel@...r.kernel.org,
	Andy Whitcroft <apw@...onical.com>
Subject: [PATCH 3/5] checkpatch: handle string concatenation in simple #defines

Adjacent strings indicate concatentation, therefore look at identifiers
directly adjacent to literal strings as strings too.  This allows us to
better detect the form below and accept it as a simple constant:

    #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

Signed-off-by: Andy Whitcroft <apw@...onical.com>
---
 scripts/checkpatch.pl |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index ff8a84f..35189de 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2828,6 +2828,12 @@ sub process {
 			{
 			}
 
+			# Flatten any obvious string concatentation.
+			while ($dstat =~ s/("X*")\s*$Ident/$1/ ||
+			       $dstat =~ s/$Ident\s*("X*")/$1/)
+			{
+			}
+
 			my $exceptions = qr{
 				$Declare|
 				module_param_named|
-- 
1.7.9

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