HOWTO: One category on a page redux

I have a method I think will work to show one category on a page with these features:

• Honor the theme’s appearance.
• Provide pagination.
• Honor sticky posts.
• Allow easy assignment of the category to the page.
• Use one template for many different category pages.

I would like for someone to try it out and provide feedback. Here are the steps to implement:

1. Make a copy of index.php and name it onecategory.php
2. Paste these lines at the start of the file:

   <?php
   /*
   Template Name: onecategory
   */
   ?>

3. Paste these lines at the end of the file:

   <?php function bmc_show_category ($nav = true) {
   <?php } // End of Function bmc_show_category ?>

4. Cut all lines between <div id="content"> and the corresponding </div> and paste between the last two lines.
5. Copy the code below and paste between the content div where you just cut the lines for the function. Then save the file in your theme folder.

   <div class="post";?><h2><?php the_title(); ?></h2></div>
   <?php $this_cat=get_post_meta($post->ID,'category-to-show',TRUE);
      if ($this_cat != "") {
         $paged = get_query_var('paged');
         $stickies = get_option('sticky_posts');
         $args = array( 'category_name' => $this_cat, 'paged' => $paged,);
         if (!$paged) {  // Only show stickies on first page
            $args['post__in'] = $stickies;
            query_posts($args);
            $found_posts = 0;  // Use this to not show warning if only stickies
            if (have_posts()) {++$found_posts; bmc_show_category($nav=false);};
            unset($args['post__in']);
         }
         $args['post__not_in'] = $stickies;
         query_posts($args);
         if (have_posts) {
            bmc_show_category($nav=true);
         } elseif (!$found_posts) {
            echo "<h4></h4>There are no posts in this category $this_cat<h4></h4>";
         }
      } else {
         echo "<h4></h4>This page is missing the Custom Field 'category-to-show'".
         "whose value is the name of the category to be shown." .
         "<br />Please have the page corrected.";
      } ?>

6. Create a page to hold your category.
7. Create a custom field ‘category-to-show’ with the value of the category name.
8. Assign the onecategory template to the page.

That should do it!