[PATCH] get_maintainer: Add test for file in VCS

[Joe Perches]

It's somewhat common for me to ask get_maintainer
to tell me who
maintains a patch file rather than
the files modified by the patch.

Emit a warning if using get_maintainer.pl -f <patchfile>

Signed-off-by: Joe Perches <j...@perches.com>
---
 scripts/get_maintainer.pl | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/scripts/get_maintainer.pl b/scripts/get_maintainer.pl
index 484d2fbf5921..5a36354a38cc 100755
--- a/scripts/get_maintainer.pl
+++ b/scripts/get_maintainer.pl
@@ -541,6 +541,9 @@ foreach my $file (@ARGV) {
            die "$P: file '${file}' not found\n";
        }
     }
+    if ($from_filename && (vcs_exists() && !vcs_file_exists($file))) {
+       warn "$P: file '$file' not found in version control $!\n";
+    }
     if ($from_filename || ($file ne "&STDIN" && vcs_file_exists($file))) {
        $file =~ s/^\Q${cur_path}\E//;  #strip any absolute path
        $file =~ s/^\Q${lk_path}\E//;   #or the path to the lk tree