difftool: rename variables for consistency

Always call the list of files @files.
Always call the worktree $worktree.

Signed-off-by: David Aguilar <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: davvid

git-difftool.perl

@@ -100,7 +100,7 @@ sub changed_files
 
 sub setup_dir_diff
 {
-	my ($workdir, $symlinks) = @_;
+	my ($worktree, $symlinks) = @_;
 	my @gitargs = ('diff', '--raw', '--no-abbrev', '-z', @ARGV);
 	my $diffrtn = Git::command_oneline(@gitargs);
 	exit(0) unless defined($diffrtn);
@@ -109,7 +109,7 @@ sub setup_dir_diff
 	# changed files.  The paths returned by diff --raw are relative to the
 	# top-level of the repository, but we defer changing directories so
 	# that @ARGV can perform pathspec limiting in the current directory.
-	chdir($workdir);
+	chdir($worktree);
 
 	# Build index info for left and right sides of the diff
 	my $submodule_mode = '160000';
@@ -121,7 +121,7 @@ sub setup_dir_diff
 	my $wtindex = '';
 	my %submodule;
 	my %symlink;
-	my @working_tree = ();
+	my @files = ();
 	my %working_tree_dups = ();
 	my @rawdiff = split('\0', $diffrtn);
 
@@ -173,14 +173,14 @@ sub setup_dir_diff
 		}
 
 		if ($rmode ne $null_mode) {
-			# Avoid duplicate working_tree entries
+			# Avoid duplicate entries
 			if ($working_tree_dups{$dst_path}++) {
 				next;
 			}
 			my ($use, $wt_sha1) =
 				use_wt_file($dst_path, $rsha1);
 			if ($use) {
-				push @working_tree, $dst_path;
+				push @files, $dst_path;
 				$wtindex .= "$rmode $wt_sha1\t$dst_path\0";
 			} else {
 				$rindex .= "$rmode $rsha1\t$dst_path\0";
@@ -227,14 +227,14 @@ sub setup_dir_diff
 
 	# Changes in the working tree need special treatment since they are
 	# not part of the index.
-	for my $file (@working_tree) {
+	for my $file (@files) {
 		my $dir = dirname($file);
 		unless (-d "$rdir/$dir") {
 			mkpath("$rdir/$dir") or
 			exit_cleanup($tmpdir, 1);
 		}
 		if ($symlinks) {
-			symlink("$workdir/$file", "$rdir/$file") or
+			symlink("$worktree/$file", "$rdir/$file") or
 			exit_cleanup($tmpdir, 1);
 		} else {
 			copy($file, "$rdir/$file") or
@@ -278,7 +278,7 @@ sub setup_dir_diff
 		exit_cleanup($tmpdir, 1) if not $ok;
 	}
 
-	return ($ldir, $rdir, $tmpdir, @working_tree);
+	return ($ldir, $rdir, $tmpdir, @files);
 }
 
 sub write_to_file
@@ -388,9 +388,9 @@ sub dir_diff
 	my $error = 0;
 	my $repo = Git->repository();
 	my $repo_path = $repo->repo_path();
-	my $workdir = $repo->wc_path();
-	$workdir =~ s|/$||; # Avoid double slashes in symlink targets
-	my ($a, $b, $tmpdir, @worktree) = setup_dir_diff($workdir, $symlinks);
+	my $worktree = $repo->wc_path();
+	$worktree =~ s|/$||; # Avoid double slashes in symlink targets
+	my ($a, $b, $tmpdir, @files) = setup_dir_diff($worktree, $symlinks);
 
 	if (defined($extcmd)) {
 		$rc = system($extcmd, $a, $b);
@@ -411,21 +411,21 @@ sub dir_diff
 	my %tmp_modified;
 	my $indices_loaded = 0;
 
-	for my $file (@worktree) {
+	for my $file (@files) {
 		next if $symlinks && -l "$b/$file";
 		next if ! -f "$b/$file";
 
 		if (!$indices_loaded) {
 			%wt_modified = changed_files(
-				$repo_path, "$tmpdir/wtindex", $workdir);
+				$repo_path, "$tmpdir/wtindex", $worktree);
 			%tmp_modified = changed_files(
 				$repo_path, "$tmpdir/wtindex", $b);
 			$indices_loaded = 1;
 		}
 
 		if (exists $wt_modified{$file} and exists $tmp_modified{$file}) {
 			my $errmsg = "warning: Both files modified: ";
-			$errmsg .= "'$workdir/$file' and '$b/$file'.\n";
+			$errmsg .= "'$worktree/$file' and '$b/$file'.\n";
 			$errmsg .= "warning: Working tree file has been left.\n";
 			$errmsg .= "warning:\n";
 			warn $errmsg;