XML::Writer "wrong" utf8 output

budik_je_vypnuty has asked for the wisdom of the Perl Monks concerning the following question:

Dear holy monks !

I'm using XML::Writer with these setting

use utf8;
my $wr_xml = new XML::Writer(OUTPUT => $output,UNSAFE => 1,ENCODING =>
+ 'utf-8');
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Everything works fine, except

\t

tabulator. The output seems like this

type="const char   &#9;&#9;*  const"
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Using Perl v5.8.8

Thank you

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Re: XML::Writer "wrong" utf8 output by tobyink (Canon) on Mar 08, 2013 at 10:11 UTC
It's XML. Per spec, the hard tab character and ` ` (and indeed ` `) are defined to mean exactly the same thing. If the output is going to be fed to an XML tool, that XML tool shouldn't care whether you've used a hard tab or whether you've used ` `. If the output is going to be fed to a non-XML tool, then why the hell are you feeding XML to a non-XML tool?! Stop doing that. `package Cow { use Moo; has name => (is => 'lazy', default => sub { 'Mooington' }) } say Cow->new->name`	[reply] [d/l] [select]
Re^2: XML::Writer "wrong" utf8 output by ikegami (Patriarch) on Mar 09, 2013 at 18:48 UTC
Actually, no they're not. A literal tab is considered whitespace in attribute values, whereas ` ` refers to a tab. So if you want to include a tab in the attribute, you have to use ` `.	[reply] [d/l] [select]