How to alter the processing of signwriter_filter depending on a template variable ?

I have added Example 4 to the documentation page, http://drupal.org/node/336075

Thanks for your efforts in documentation.

However, the example uses signwriter_title_convert(), it doesn't apply when signwriter_filter() is used to process text entered in a textarea.

I wonder if there is a way to alter/hook the signwriter_filter() function from the theme ?

Regards

Yes, I see your point. This is not really a hook_filter capability since it has no node context to work with, http://api.drupal.org/api/function/hook_filter/5.

However, you could do this by:

1. Creating Signwriter filters for each Taxonomy term - one for each unique colour
2. Create a custom module that contains your term switching logic and changing the node->format (input format) to the required filter on the node insert or update, http://api.drupal.org/api/function/hook_nodeapi/5

This is pretty clunky but it should work, no doubt there are other methods too.

I look forward to seeing you post your final solution here :)