commit c1c6dc85a787fb33f8eac0249c909a65bca19b52
author Joe Perches <joe@perches.com> Wed Sep 04 05:02:20 2019 +0000
committer Johannes Weiner <hannes@cmpxchg.org> Wed Sep 04 05:02:20 2019 +0000
tree ac88d6af3bd3c971c2efc072e1d1b0d2cd755940
parent 7ced633f800f4377010d2d7e983e2cbe734eafa6

checkpatch: make git output use LANGUAGE=en_US.utf8

git output parsing depends on the language being en_US english.

Make the backtick execution of all `git <foo>` commands set the
LANGUAGE of the process to en_US.utf8 before executing the actual
command using `export LANGUAGE=en_US.utf8; git <foo>`.

Because the command is executed in a child process, the parent
LANGUAGE is unchanged.

Link: http://lkml.kernel.org/r/bb9f29988f3258281956680ff39c3e19e37dc0b8.camel@perches.com
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Tested-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

scripts/checkpatch.pl

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 4925516..4aad501 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -62,6 +62,8 @@
 my $typedefsfile = "";
 my $color = "auto";
 my $allow_c99_comments = 1; # Can be overridden by --ignore C99_COMMENT_TOLERANCE
+# git output parsing needs US English output, so first set backtick child process LANGUAGE
+my $git_command ='export LANGUAGE=en_US.UTF-8; git';
 
 sub help {
 	my ($exitcode) = @_;
@@ -918,7 +920,7 @@
 	$camelcase_seeded = 1;
 
 	if (-e ".git") {
-		my $git_last_include_commit = `git log --no-merges --pretty=format:"%h%n" -1 -- include`;
+		my $git_last_include_commit = `${git_command} log --no-merges --pretty=format:"%h%n" -1 -- include`;
 		chomp $git_last_include_commit;
 		$camelcase_cache = ".checkpatch-camelcase.git.$git_last_include_commit";
 	} else {
@@ -946,7 +948,7 @@
 	}
 
 	if (-e ".git") {
-		$files = `git ls-files "include/*.h"`;
+		$files = `${git_command} ls-files "include/*.h"`;
 		@include_files = split('\n', $files);
 	}
 
@@ -970,7 +972,7 @@
 
 	return ($id, $desc) if ((which("git") eq "") || !(-e ".git"));
 
-	my $output = `git log --no-color --format='%H %s' -1 $commit 2>&1`;
+	my $output = `${git_command} log --no-color --format='%H %s' -1 $commit 2>&1`;
 	$output =~ s/^\s*//gm;
 	my @lines = split("\n", $output);
 
@@ -1020,7 +1022,7 @@
 		} else {
 			$git_range = "-1 $commit_expr";
 		}
-		my $lines = `git log --no-color --no-merges --pretty=format:'%H %s' $git_range`;
+		my $lines = `${git_command} log --no-color --no-merges --pretty=format:'%H %s' $git_range`;
 		foreach my $line (split(/\n/, $lines)) {
 			$line =~ /^([0-9a-fA-F]{40,40}) (.*)$/;
 			next if (!defined($1) || !defined($2));