I could not reproduce your results. Your example output an empty attribute in my test code. Please provide a complete program with your actual code and output.

use warnings;
use strict;
use HTML::Tiny;

## from the module documention
my $h = HTML::Tiny->new( mode => 'html' );
print $h->closed( 'input', { type => 'checkbox', checked => [] } );
print "\n";

## example from OP
print $h->tag ('audio', { controls=>[], type => "audio\/mpeg", src => 
+"test.mp3"});

__DATA__
<input checked type="checkbox">
<audio controls src="test.mp3" type="audio/mpeg"></audio>

[download]

In reply to Re: HTML::Tiny, null parameter tags contradicting documentation by Lotus1
in thread HTML::Tiny, null parameter tags contradicting documentation by gsd4me

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.