How to specify Encode:: <subchar>?

[Marcello]

Hi Monks,

From the Encode documentation:

Handling Malformed Data

...

CHECK = Encode::FB_DEFAULT ( == 0)

If CHECK is 0, (en|de)code will put a substitution character in place 
+of a malformed character. When you encode, <subchar> will be used.

I have been looking all over, but how can I specify this <subchar>? The default is '?' but I would like to use a space instead.

Thanks!

[ikegami]

How about

use constant FB_SPACE => sub { ' ' };

$bytes = encode($charset, $chars, FB_SPACE);

Update: Tested:

use Encode         qw( encode FB_DEFAULT );
use HTML::Entities qw( decode_entities );

use constant FB_SPACE => sub { ' ' };

my $chars = decode_entities('abc♥def');
my $charset = 'US-ASCII';

for my $check (FB_DEFAULT, FB_SPACE) {
   print encode($charset, $chars, $check), "\n";
}

abc?def
abc def

[Marcello]

Thanks ++ikegami,

Upgraded my Encode version from 2.01 to the latest 2.24 and using this new functionality.

Regards, Marcel

[hipowls]

<subchar> is specified in a Unicode Character Map (UCM) file. They are used by enc2xs (part of Encode) to generate xs files to be compiled into an encoding. The documentation for enc2xs has a quick guide for making your own encoding.

If all you want to do is change the substitution character then it should be simple. Find the UCM file for the encoding you want to modify, change <subchar> to the value you want and follow the instructions.

Good luck!