get_maintainer: improve patch recognition

There are mode change and rename only patches that are unrecognized
by the get_maintainer.pl script.

Recognize them.

Link: http://lkml.kernel.org/r/bf63101a908d0ff51948164aa60e672368066186.1526949367.git.joe@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 30eca36..c87fa73 100755 (executable)
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -542,7 +542,18 @@ foreach my $file (@ARGV) {
 
        while (<$patch>) {
            my $patch_line = $_;
-           if (m/^\+\+\+\s+(\S+)/ or m/^---\s+(\S+)/) {
+           if (m/^ mode change [0-7]+ => [0-7]+ (\S+)\s*$/) {
+               my $filename = $1;
+               push(@files, $filename);
+           } elsif (m/^rename (?:from|to) (\S+)\s*$/) {
+               my $filename = $1;
+               push(@files, $filename);
+           } elsif (m/^diff --git a\/(\S+) b\/(\S+)\s*$/) {
+               my $filename1 = $1;
+               my $filename2 = $2;
+               push(@files, $filename1);
+               push(@files, $filename2);
+           } elsif (m/^\+\+\+\s+(\S+)/ or m/^---\s+(\S+)/) {
                my $filename = $1;
                $filename =~ s@^[^/]*/@@;
                $filename =~ s@\n@@;