package Text::Wrap;require Exporter;@ISA = qw(Exporter);@EXPORT = qw(wrap fill);@EXPORT_OK = qw($columns $break $huge);$VERSION = 2001.0131;use vars qw($VERSION $columns $debug $break $huge);use strict;BEGIN	{	$columns = 76;  # <= screen width	$debug = 0;	$break = '\s';	$huge = 'wrap'; # alternatively: 'die' or 'overflow'}use Text::Tabs qw(expand unexpand);sub wrap{	my ($ip, $xp, @t) = @_;	my $r = "";	my $tail = pop(@t);	my $t = expand(join("", (map { /\s+\Z/ ? ( $_ ) : ($_, ' ') } @t), $tail));	my $lead = $ip;	my $ll = $columns - length(expand($ip)) - 1;	my $nll = $columns - length(expand($xp)) - 1;	my $nl = "";	my $remainder = "";	pos($t) = 0;	while ($t !~ /\G\s*\Z/gc) {		if ($t =~ /\G([^\n]{0,$ll})($break|\Z(?!\n))/xmgc) {			$r .= unexpand($nl . $lead . $1);			$remainder = $2;		} elsif ($huge eq 'wrap' && $t =~ /\G([^\n]{$ll})/gc) {			$r .= unexpand($nl . $lead . $1);			$remainder = "\n";		} elsif ($huge eq 'overflow' && $t =~ /\G([^\n]*?)($break|\Z(?!\n))/xmgc) {			$r .= unexpand($nl . $lead . $1);			$remainder = $2;		} elsif ($huge eq 'die') {			die "couldn't wrap '$t'";		} else {			die "This shouldn't happen";		}					$lead = $xp;		$ll = $nll;		$nl = "\n";	}	$r .= $remainder;	print "-----------$r---------\n" if $debug;	print "Finish up with '$lead'\n" if $debug;	$r .= $lead . substr($t, pos($t), length($t)-pos($t))		if pos($t) ne length($t);	print "-----------$r---------\n" if $debug;;	return $r;}sub fill {	my ($ip, $xp, @raw) = @_;	my @para;	my $pp;	for $pp (split(/\n\s+/, join("\n",@raw))) {		$pp =~ s/\s+/ /g;		my $x = wrap($ip, $xp, $pp);		push(@para, $x);	}	# if paragraph_indent is the same as line_indent, 	# separate paragraphs with blank lines	my $ps = ($ip eq $xp) ? "\n\n" : "\n";	return join ($ps, @para);}1;__END__=head1 NAMEText::Wrap - line wrapping to form simple paragraphs=head1 SYNOPSIS B<Example 1>	use Text::Wrap	$initial_tab = "\t";	# Tab before first line	$subsequent_tab = "";	# All other lines flush left	print wrap($initial_tab, $subsequent_tab, @text);	print fill($initial_tab, $subsequent_tab, @text);	@lines = wrap($initial_tab, $subsequent_tab, @text);	@paragraphs = fill($initial_tab, $subsequent_tab, @text);B<Example 2>	use Text::Wrap qw(wrap $columns $huge);	$columns = 132;		# Wrap at 132 characters	$huge = 'die';	$huge = 'wrap';	$huge = 'overflow';B<Example 3>		use Text::Wrap	$Text::Wrap::columns = 72;	print wrap('', '', @text);=head1 DESCRIPTIONText::Wrap::wrap() is a very simple paragraph formatter.  It formats asingle paragraph at a time by breaking lines at word boundries.Indentation is controlled for the first line (C<$initial_tab>) andall subsquent lines (C<$subsequent_tab>) independently.  Please note: C<$initial_tab> and C<$subsequent_tab> are the literal strings that willbe used: it is unlikley you would want to pass in a number.Lines are wrapped at C<$Text::Wrap::columns> columns.  C<$Text::Wrap::columns>should be set to the full width of your output device.  In fact,every resulting line will have length of no more than C<$columns - 1>.  Beginner note: In example 2, above C<$columns> is imported intothe local namespace, and set locally.  In example 3,C<$Text::Wrap::columns> is set in its own namespace without importing it.When words that are longer than C<$columns> are encountered, theyare broken up.  C<wrap()> adds a C<"\n"> at column C<$columns>.This behavior can be overridden by setting C<$huge> to'die' or to 'overflow'.  When set to 'die', large words will causeC<die()> to be called.  When set to 'overflow', large words will beleft intact.  Text::Wrap::fill() is a simple multi-paragraph formatter.  It formatseach paragraph separately and then joins them together when it's done.  Itwill destory any whitespace in the original text.  It breaks text intoparagraphs by looking for whitespace after a newline.  In other respectsit acts like wrap().When called in list context, C<wrap()> will return a list of lines and C<fill()> will return a list of paragraphs.Historical notes: Older versions of C<wrap()> and C<fill()> always returned strings.  Also, 'die' used to be the default value ofC<$huge>.  Now, 'wrap' is the default value.=head1 EXAMPLE	print wrap("\t","","This is a bit of text that forms 		a normal book-style paragraph");=head1 AUTHORDavid Muir Sharnoff <muir@idiom.com> with help from Tim Pierce andmany many others.