将END块放入模块中是不礼貌的？

Question

END在这个例子中保留块是否可以,因为没有人想要一个坏的终端或者我不应该END在一个模块中放一个块？

package My_Package;
use warnings;
use strict;
use Term::ReadKey;

sub _init_scr {
    my ( $arg ) = @_;
    $arg->{backup_flush} = $|;
    $| = 1;
    Term::ReadKey::ReadMode 'ultra-raw';
}

sub _end_win {
    my ( $arg ) = @_;
    print "\n\r";
    Term::ReadKey::ReadMode 'restore';
    $| = $arg->{backup_flush};
}

END {
    Term::ReadKey::ReadMode 'restore';
}

sub my_function {
    my $arg = {};
    _init_scr( $arg );
    while ( 1 ) {
        my $c = ReadKey 0;
        if ( ! defined $c ) {
            _end_win( $arg );
            warn "EOT";
            return;
        }
        next if $c eq "\e";
        given ( $c ) {
            when ( $c ge 'a' && $c le 'z' ) {
                print $c;
                $arg->{string} .= $c;
            }
            when ( $c eq "\cC" ) {
                _end_win( $arg );
                print STDERR "^C";
                kill( 'INT', $$ );
                return;
            }
            when ( $c eq "\r" ) {
                _end_win( $arg );
                return $arg->{string};
            }
        }
    }
}

Answer 1

如果你的模块改变了终端模式,那么我认为最有礼貌的事情就是它还要END在程序退出之前安装一个块来恢复终端模式.