Documentation: Allow custom diff tools to be specified in 'diff.tool'

diff --git a/git-cvsimport.perl b/git-cvsimport.perl
index 8e683e54783ab6e916bdb8ade56832ac81470648..bbf327f3e891cacdd14c0b18b51702ce14b2b6df 100755 (executable)
--- a/git-cvsimport.perl
+++ b/git-cvsimport.perl
@@ -366,7 +366,9 @@ sub conn {
        $self->{'socketo'}->write("valid-requests\n");
        $self->{'socketo'}->flush();
 
-       chomp(my $rep=$self->readline());
+       my $rep=$self->readline();
+       die "Failed to read from server" unless defined $rep;
+       chomp($rep);
        if ($rep !~ s/^Valid-requests\s*//) {
                $rep="<unknown>" unless $rep;
                die "Expected Valid-requests from server, but got: $rep\n";