- if (isdbg('chan')) {
- my $s = "line: $line";
- $s .= ", args: " . join(', ', @$args) if $args && @$args;
+ if (isdbg('progress')) {
+ my $s = qq{line: "$line"};
+ $s .= ", args: " . join(', ', map { defined $_ ? qq{'$_'} : q{'undef'} } @$args) if $args && @$args;
+ dbg($s);