refs: change how packed refs are deleted

diff --git a/git-difftool.perl b/git-difftool.perl
index 6f8bb73cd6a3925bba575be429d231a7e160e623..edd0493a08b501d60c04044e79a9e0b096d77953 100755 (executable)
--- a/git-difftool.perl
+++ b/git-difftool.perl
@@ -138,7 +138,7 @@ sub setup_dir_diff
 
        my @gitargs = ('diff', '--raw', '--no-abbrev', '-z', @ARGV);
        my $diffrtn = $diffrepo->command_oneline(@gitargs);
-       exit(0) if (length($diffrtn) == 0);
+       exit(0) unless defined($diffrtn);
 
        # Build index info for left and right sides of the diff
        my $submodule_mode = '160000';
@@ -338,7 +338,8 @@ sub main
                gui => undef,
                help => undef,
                prompt => undef,
-               symlinks => $^O ne 'MSWin32' && $^O ne 'msys',
+               symlinks => $^O ne 'cygwin' &&
+                               $^O ne 'MSWin32' && $^O ne 'msys',
                tool_help => undef,
        );
        GetOptions('g|gui!' => \$opts{gui},