my @perlargs;
push @perlargs, "--debug" if $opt{debug};
-push @perlargs, "--install=$opt{install}" if exists $opt{install};
-push @perlargs, "--blead=$opt{blead}" if exists $opt{blead};
+push @perlargs, "--install=$opt{install}" if $opt{install};
+push @perlargs, "--blead=$opt{blead}" if $opt{blead};
push @perlargs, "--debug-start=$opt{'debug-start'}" if $opt{'debug-start'};
my $T0 = time;
my @args = ddverbose();
push @args, '--nocheck' unless $opt{check};
-push @args, "--blead-version=$opt{'blead-version'}" if exists $opt{'blead-version'};
+push @args, "--blead-version=$opt{'blead-version'}" if $opt{'blead-version'};
push @args, @perlargs;
# Find out what symbols were in what releases