Block display can't handle arguments in Views 3 for D6

True. I've worked with all Views versions for D6 and block displays have always been defective in arguments handling.

Now about your suggestion, I'm already using Provide default argument, but together with Taxonomy Term ID from URL option (as the argument is a taxonomy term). The result you've read above.

I've also tried configuring it to Provide default argument combined with the PHP Code option, providing a code snap (pasted ahead) that is already working in the template.php. Again, in Block display Live preview everything worked fine but in the actual block no filtering at all.

So my point with this issue is if Block display is planned to accept arguments:

1. Live preview should behavior exactly like it's display, showing the same results for any query in the actual block as showed in display preview;
2. Argument handling basic options in Provide default argument (term ID, node ID, PHP code, etc.) are requisites;

And, please, don't get me wrong here. I do think that Views module is a insanely great piece of work!

P.S.: The argument handling PHP code:

$curi = urldecode(request_uri());
$curi = substr($curi, 1, strlen($curi));
$termname = substr($curi, 3, $pos-3); // the first 3 characters don't belong to the argument
$locterm = taxonomy_get_term_by_name($termname);
if (count($locterm) != 0) return $locterm[0]->name;
else {
  $locterm = taxonomy_get_term_by_name(str_replace('-', ' ', $termname));
  if (count($locterm) != 0) return $locterm[0]->name;
  else return '##';
}

I think you didn't understand the purpose of this code snippet. Both of your suggestions don't deal with text arguments passed to a view through a path alias (URL).

Anyway the error probably isn't there (as I said before the snippet is working fine in template.php). This was just a test to verify if the problem was with the Taxonomy Term ID from URL option.

In fact both are responding the same way (results and problems) in this case.

Sorry about the wrong PHP code above. It was part of a bigger code and I didn't make the necessary ajustment.

Here goes the working code to get a text argument (representing a taxonomy term) from any URL (node, taxonomy, view, ...) and pass to a view, even on Block display:

$curi = urldecode(request_uri());
$curi = substr($curi, 1, strlen($curi));
// here goes any code to clean the uri
$termname = substr($curi, 3, strlen($curi)-3);
// getting just the relevant argument
$locterm = taxonomy_get_term_by_name($termname);
if (count($locterm) != 0) return $locterm[0]->name;
else {
$locterm = taxonomy_get_term_by_name(str_replace('-', ' ', $termname));
if (count($locterm) != 0) return $locterm[0]->name;
else return '';
}

The view argument can be any text field, but the validation here is handled exclusively by Taxonomy module.

Always here to help.