[PATCH] checkpatch: Add check for line continuations in quoted strings

[Joe Perches <joe@perches.com>]

Add a warning for unterminated quoted strings with line continuations
as these frequently add unwanted whitespace.

Signed-off-by: Joe Perches <joe@perches.com>

---

 scripts/checkpatch.pl |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index d867081..f3f907b 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2748,6 +2748,11 @@ sub process {
 			WARN("sizeof(& should be avoided\n" . $herecurr);
 		}
 
+# check for line continuations in quoted strings with odd counts of "
+		if ($rawline =~ /\\$/ && $rawline =~ tr/"/"/ % 2) {
+			WARN("Avoid line continuations in quoted strings\n" . $herecurr);
+		}
+
 # check for new externs in .c files.
 		if ($realfile =~ /\.c$/ && defined $stat &&
 		    $stat =~ /^.\s*(?:extern\s+)?$Type\s+($Ident)(\s*)\(/s)