How do I use a different node template on taxonomy term node listing pages?

Question

For a node listing on a taxonomy term page, like:

taxonomy/term/4

It's currently using the node template I set up just for when you are looking at a node:

node--spot.tpl.php

I added this code to hook_preprocess_node:

if(arg(0) == 'taxonomy') {
  array_push($vars['theme_hook_suggestions'], 'node_taxonomy');
}

The node template file name I want to use is:

node-taxonomy.tpl.php

I confirmed the hook is running but it's still using:

node--spot.tpl.php

What am I doing wrong?

Update 1: According to the source code theme_hook_suggestions are listed in reverse priority order, so I changed array_unshift to array_push.

Update 2: I am correctly seeing in Devel themer that my template should be used first, even when it isn't:

node_taxonomy < node_14 < node_spot < sites/all/themes/hotness/templates/node--spot.tpl.php

Answer 1

This answer had two parts:

1. As detailed in my Update #1, you have to put your suggestion last in the theme_hook_suggestions array, as last is highest priority.

2. Your template files must be named with two dashes, not one.

File system:

node--taxonomy.tpl.php

As added to theme_hook_suggestions array:

node__taxonomy

Answer 2

Actually there is $variables['theme_hook_suggestions'] in hook_preprocess_node, $vars is in hook_preprocess_page I guess.