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-# Pod::Text::Overstrike -- Convert POD data to formatted overstrike text
-# $Id: Overstrike.pm,v 1.10 2002/08/04 03:35:01 eagle Exp $
-#
-# Created by Joe Smith <Joe.Smith@inwap.com> 30-Nov-2000
-#   (based on Pod::Text::Color by Russ Allbery <rra@stanford.edu>)
-#
-# This program is free software; you may redistribute it and/or modify it
-# under the same terms as Perl itself.
-#
-# This was written because the output from:
-#
-#     pod2text Text.pm > plain.txt; less plain.txt
-#
-# is not as rich as the output from
-#
-#     pod2man Text.pm | nroff -man > fancy.txt; less fancy.txt
-#
-# and because both Pod::Text::Color and Pod::Text::Termcap are not device
-# independent.
-
-##############################################################################
-# Modules and declarations
-##############################################################################
-
-package Pod::Text::Overstrike;
-
-require 5.004;
-
-use Pod::Text ();
-
-use strict;
-use vars qw(@ISA $VERSION);
-
-@ISA = qw(Pod::Text);
-
-# Don't use the CVS revision as the version, since this module is also in Perl
-# core and too many things could munge CVS magic revision strings.  This
-# number should ideally be the same as the CVS revision in podlators, however.
-$VERSION = 1.10;
-
-
-##############################################################################
-# Overrides
-##############################################################################
-
-# Make level one headings bold, overridding any existing formatting.
-sub cmd_head1 {
-    my ($self, $text, $line) = @_;
-    $text =~ s/\s+$//;
-    $text = $self->strip_format ($self->interpolate ($text, $line));
-    $text =~ s/(.)/$1\b$1/g;
-    $self->SUPER::cmd_head1 ($text);
-}
-
-# Make level two headings bold, overriding any existing formatting.
-sub cmd_head2 {
-    my ($self, $text, $line) = @_;
-    $text =~ s/\s+$//;
-    $text = $self->strip_format ($self->interpolate ($text, $line));
-    $text =~ s/(.)/$1\b$1/g;
-    $self->SUPER::cmd_head2 ($text);
-}
-
-# Make level three headings underscored, overriding any existing formatting.
-sub cmd_head3 {
-    my ($self, $text, $line) = @_;
-    $text =~ s/\s+$//;
-    $text = $self->strip_format ($self->interpolate ($text, $line));
-    $text =~ s/(.)/_\b$1/g;
-    $self->SUPER::cmd_head3 ($text);
-}
-
-# Level four headings look like level three headings.
-sub cmd_head4 {
-    my ($self, $text, $line) = @_;
-    $text =~ s/\s+$//;
-    $text = $self->strip_format ($self->interpolate ($text, $line));
-    $text =~ s/(.)/_\b$1/g;
-    $self->SUPER::cmd_head4 ($text);
-}
-
-# The common code for handling all headers.  We have to override to avoid
-# interpolating twice and because we don't want to honor alt.
-sub heading {
-    my ($self, $text, $line, $indent, $marker) = @_;
-    $self->item ("\n\n") if defined $$self{ITEM};
-    $text .= "\n" if $$self{loose};
-    my $margin = ' ' x ($$self{margin} + $indent);
-    $self->output ($margin . $text . "\n");
-}
-
-# Fix the various formatting codes.
-sub seq_b { local $_ = strip_format (@_); s/(.)/$1\b$1/g; $_ }
-sub seq_f { local $_ = strip_format (@_); s/(.)/_\b$1/g; $_ }
-sub seq_i { local $_ = strip_format (@_); s/(.)/_\b$1/g; $_ }
-
-# Output any included code in bold.
-sub output_code {
-    my ($self, $code) = @_;
-    $code =~ s/(.)/$1\b$1/g;
-    $self->output ($code);
-}
-
-# We unfortunately have to override the wrapping code here, since the normal
-# wrapping code gets really confused by all the backspaces.
-sub wrap {
-    my $self = shift;
-    local $_ = shift;
-    my $output = '';
-    my $spaces = ' ' x $$self{MARGIN};
-    my $width = $$self{width} - $$self{MARGIN};
-    while (length > $width) {
-        # This regex represents a single character, that's possibly underlined
-        # or in bold (in which case, it's three characters; the character, a
-        # backspace, and a character).  Use [^\n] rather than . to protect
-        # against odd settings of $*.
-        my $char = '(?:[^\n][\b])?[^\n]';
-        if (s/^((?>$char){0,$width})(?:\Z|\s+)//) {
-            $output .= $spaces . $1 . "\n";
-        } else {
-            last;
-        }
-    }
-    $output .= $spaces . $_;
-    $output =~ s/\s+$/\n\n/;
-    $output;
-}
-
-##############################################################################
-# Utility functions
-##############################################################################
-
-# Strip all of the formatting from a provided string, returning the stripped
-# version.
-sub strip_format {
-    my ($self, $text) = @_;
-    $text =~ s/(.)[\b]\1/$1/g;
-    $text =~ s/_[\b]//g;
-    return $text;
-}
-
-##############################################################################
-# Module return value and documentation
-##############################################################################
-
-1;
-__END__
-
-=head1 NAME
-
-Pod::Text::Overstrike - Convert POD data to formatted overstrike text
-
-=head1 SYNOPSIS
-
-    use Pod::Text::Overstrike;
-    my $parser = Pod::Text::Overstrike->new (sentence => 0, width => 78);
-
-    # Read POD from STDIN and write to STDOUT.
-    $parser->parse_from_filehandle;
-
-    # Read POD from file.pod and write to file.txt.
-    $parser->parse_from_file ('file.pod', 'file.txt');
-
-=head1 DESCRIPTION
-
-Pod::Text::Overstrike is a simple subclass of Pod::Text that highlights
-output text using overstrike sequences, in a manner similar to nroff.
-Characters in bold text are overstruck (character, backspace, character) and
-characters in underlined text are converted to overstruck underscores
-(underscore, backspace, character).  This format was originally designed for
-hardcopy terminals and/or lineprinters, yet is readable on softcopy (CRT)
-terminals.
-
-Overstruck text is best viewed by page-at-a-time programs that take
-advantage of the terminal's B<stand-out> and I<underline> capabilities, such
-as the less program on Unix.
-
-Apart from the overstrike, it in all ways functions like Pod::Text.  See
-L<Pod::Text> for details and available options.
-
-=head1 BUGS
-
-Currently, the outermost formatting instruction wins, so for example
-underlined text inside a region of bold text is displayed as simply bold.
-There may be some better approach possible.
-
-=head1 SEE ALSO
-
-L<Pod::Text>, L<Pod::Parser>
-
-The current version of this module is always available from its web site at
-L<http://www.eyrie.org/~eagle/software/podlators/>.  It is also part of the
-Perl core distribution as of 5.6.0.
-
-=head1 AUTHOR
-
-Joe Smith <Joe.Smith@inwap.com>, using the framework created by Russ Allbery
-<rra@stanford.edu>.
-
-=head1 COPYRIGHT AND LICENSE
-
-Copyright 2000 by Joe Smith <Joe.Smith@inwap.com>.
-Copyright 2001 by Russ Allbery <rra@stanford.edu>.
-
-This program is free software; you may redistribute it and/or modify it
-under the same terms as Perl itself.
-
-=cut