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package Vile;

use strict;

sub mlreply_opts {
    my ( $prompt, @origopts ) = @_;
    my $i        = 0;
    my $word     = $origopts[$i];
    my $lastchar = 9;
    my @opts     = @origopts;
    my $char;
    print $prompt, $word;
    while ( ( $char = Vile::keystroke() ) != 13 ) {

        if ( $char == 9 ) {
            @opts = grep( /^$word/, @origopts ) if ( $lastchar != 9 );
            $word = $opts[ ++$i % ( $#opts + 1 ) ] if ( $#opts > -1 );
        }
        elsif ( $char == 8 ) {
            $word = substr( $word, $[, length($word) - 1 ) if ( length $word );
            $i = 0;
        }
        elsif ( $char == 21 ) {
            $word = "";
            $i    = 0;
        }
        elsif ( $char == 27 ) {
            undef $word;
            last;
        }
        else {
            $word = "" if ( $lastchar == 9 );
            $word .= sprintf "%c", $char;
            $i = 0;
        }
        print $prompt, $word;
        $lastchar = $char;
    }
    return $word;
}

1;

__END__

=head1 NAME

Vile - perl library additions to Vile package

=head1 SYNOPSIS

    use Vile;

    Vile::mlreply_opts($prompt, @options)

=head1 DESCRIPTION

This  module is supposed to  contain additions  to the  Vile
package which are written in perl.

mlreply_opts PROMPT OPTIONS_LIST

Prompts  the user with  the given  prompt and  first of  the
provided  option list. At the prompt, the user can <TAB> his
way  through all the possible options. He can also partially
fill  in a response and <TAB> through matching options only.
When  user presses <RET>, the user response is returned.  If
the  user aborts the query (via the use of the escape  key),
an undef is returned.

Only   backspace  and  kill-text  keys  work  correctly  for
editing  the mini-buffer. Vile's mini-buffer editing is  not
supported.  Expand characters are  also  not recognized  and
hence   this  command  resembles  mlreply_no_opts  in   that
respect despite the name.

=head1 CREDITS

Vile, Perl and Vile's Perl interface.

=head1 AUTHOR

Kuntal Daftary (daftary@cisco.com), 1998

=cut