checkpatch.pl: warn if an adding line introduce spaces before tabs.
Signed-off-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Cc: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 1a93ac2..cf4e44c 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1422,6 +1422,12 @@
ERROR("code indent should use tabs where possible\n" . $herevet);
}
+# check for space before tabs.
+ if ($rawline =~ /^\+/ && $rawline =~ / \t/) {
+ my $herevet = "$here\n" . cat_vet($rawline) . "\n";
+ WARN("please, no space before tabs\n" . $herevet);
+ }
+
# check we are in a valid C source file if not then ignore this hunk
next if ($realfile !~ /\.(h|c)$/);