) or exit 64; # EX_USAGE
$opt{width} ||= $ENV{COLUMNS} || 80;
$opt{color} //= 1;
-$opt{trim} //= 0;
my @lines = readline or exit;
chomp for @lines;
my @values = map { s/^\h* ( -? [0-9]* (?:\.[0-9]+)? )//x and $1 } @lines;
my @order = sort { $b <=> $a } grep { length } @values;
-length > $opt{trim} + 1 and substr($_, $opt{trim}) = '…' for @lines;
+if ($opt{trim}) {
+ my $trimpos = abs $opt{trim};
+ $trimpos == 1 ? ($_ = 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 = $opt{trim} ? $opt{trim} + 2 :
+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
Disable colored output of values and bar markers.
-=item -l, --length=<size>
+=item -l, --length=[-]<size>
Trim line contents (between number and bars)
to a maximum number of characters.
The exceeding part is replaced by an abbreviation sign.
+Prepend a dash (i.e. make negative) to enforce padding
+regardless of encountered contents.
+
=item -m, --markers=
Statistical positions to indicate on bars.