in reply to Re: Term::UI on Win32
in thread Term::UI on Win32

Hello marmot
I found the problem. my script creates 8 different Term::ReadLine objects in different sub routines. The term object is created within each sub routine. It looks as you can only create a single object of Term::ReadLine in a single Perl script.
If you try to create a second one then you get the message. If I use for these different input methods just a single object it works without the message on Windows. As I have said multiple Term objects are working fine on Linux and MacOSX but not on Windows.
Do you have any idea why this is the reason?


use Term::UI;
use Term::ReadLine;
my $term = Term::ReadLine->new('lang');
my $reply = $term->get_reply( prompt => 'What is your default prog. la
+ng?', default => 'Perl');
my $term2 = Term::ReadLine->new('OS');
$reply = $term2->get_reply( prompt => 'What is your OS?', default => '
+MacOS');

[download]

Any ideas?
Thanks Andreas

Replies are listed 'Best First'.
Re^3: Term::UI on Win32
by bingos (Vicar) on Mar 19, 2012 at 09:58 UTC

    You can only create a single object of Term::ReadLine if the Term::ReadLine::Perl 'personality' is being used.

    Behold

    C:\tmp>perl foo.pl
What is your default prog. lang? [Perl]:
What is your OS? [MacOS]:

C:\tmp>perl -I Term-ReadLine-Perl-1.0303\blib\lib foo.pl
What is your default prog. lang? [Perl]:
Cannot create second readline interface, falling back to dumb.
What is your OS? [MacOS]:

C:\tmp>

    [download]

    And this limitation isn't just a MSWin32 thing:

    [canker:]$ perl foo.pl
What is your default prog. lang? [Perl]:
What is your OS? [MacOS]:

[canker:]$ perl -ITerm-ReadLine-Perl-1.0303/blib/lib foo.pl
What is your default prog. lang? [Perl]:
Cannot create second readline interface, falling back to dumb.
What is your OS? [MacOS]:

    [download]

    Forcing Term::ReadLine to load the Stub personality should work fine.

    use strict;
use warnings;
BEGIN {
  $ENV{PERL_RL}='Stub';
};
use Term::UI;
use Term::ReadLine;
my $term = Term::ReadLine->new('lang');
my $reply = $term->get_reply( prompt => 'What is your default prog. la
+ng?', default => 'Perl');
my $term2 = Term::ReadLine->new('OS');
$reply = $term2->get_reply( prompt => 'What is your OS?', default => '
+MacOS');

    [download]

    And it does

    C:\tmp>perl -I Term-ReadLine-Perl-1.0303\blib\lib foo.pl
What is your default prog. lang? [Perl]:
What is your OS? [MacOS]:

C:\tmp>

    [download]

    And on a non-MSWin32 OS too

    [canker:]$ perl -ITerm-ReadLine-Perl-1.0303/blib/lib foo.pl
What is your default prog. lang? [Perl]:
What is your OS? [MacOS]:
[canker:]$

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