chomp for @lines;
my @values = map { s/^\h* ( -? [0-9]* (?:\.[0-9]+)? )//x and $1 } @lines;
my @order = sort { $b <=> $a } grep { length } @values;
-if ($opt{trim}) {
+if (defined $opt{trim}) {
my $trimpos = abs $opt{trim};
- length > $trimpos and substr($_, $trimpos - 1) = '…' for @lines;
+ $trimpos <= 1 ? ($_ = substr($_, 0, 1)) :
+ (length > $trimpos and substr($_, $trimpos - 1) = '…') for @lines;
}
my $maxval = $order[0];
my $minval = min $order[-1], 0;
my $lenval = max map { length } @order;
-my $len = defined $opt{trim} && $opt{trim} < 0 ? -$opt{trim} + 1 :
+my $len = defined $opt{trim} && $opt{trim} <= 0 ? -$opt{trim} + 1 :
1 + max map { length } @lines; # left padding
my $size = ($maxval - $minval) &&
($opt{width} - $lenval - $len) / ($maxval - $minval); # bar multiplication
my @barmark;
-if ($opt{markers} // 1) {
+if ($opt{markers} // 1 and $size > 0) {
sub orderpos { (($order[$_[0]] + $order[$_[0] + .5]) / 2 - $minval) * $size }
$barmark[ (sum(@order) / @order - $minval) * $size ] = '='; # average
$barmark[ orderpos($#order / 2) ] = '+'; # mean
Trim line contents (between number and bars)
to a maximum number of characters.
-The exceeding part is replaced by an abbreviation sign.
+The exceeding part is replaced by an abbreviation sign,
+unless C<--length=0>.
Prepend a dash (i.e. make negative) to enforce padding
regardless of encountered contents.