hki429 on "Generating an index of category tags"

Hi,

I'm trying to generate an index of category tags. I'm hoping to achieve the following:

* Return a list of all tags for a category,
* Order this list alphabetically,
* Add single letters between the tags, like you'd see in the index of a book.

For example:

A
- a_tag1
- a_tag2
- a_tag3

B
- B_tag

C
- C_tag

I've searched a lot on the internet (perhaps with wrong keywords), but found here an example for my first step.

Now I use the following:

<ul>
<?php
    query_posts('category_name=mycategory');
    if (have_posts()) : while (have_posts()) : the_post();

        if( get_the_tag_list() ){
            echo $posttags = get_the_tag_list('<li>','</li><li>','</li>');
        }

    endwhile; endif; 

    wp_reset_query();
?>
</ul>

Do you might have an idea how I can achieve my remaining two goals (sort the list alphabetically and add 'book index like' letters)?

Thanks in advance for any insights,