Migrating style and script tags from node bodies into Code per Node

For a recent project, I needed to migrate anything inside <script> and <style> tags that were embedded with other content inside the body field of Drupal 6 nodes into separate Code per Node-provided fields for Javascript and CSS. (Code per Node is a handy module that lets content authors easily manage CSS/JS per node/block, and saves the styles and scripts to the filesystem for inclusion when the node is rendered—read more about CPN goodness here).

The key is to get all the styles and scripts into a string (separately), then pass that data into an array in the format:

Adding Module Stylesheets using drupal_add_css()

A couple days ago, when building a quick site with limited functionality (basically a pretty front end to a database website), I ran into a hiccup with my custom module/theme for the site, which caused me to scratch my head for a few minutes.

In my custom module (called 'idcards'), I added a stylesheet for a couple forms on the site using the drupal_add_css() function:

 * Implementation of drupal_add_css()
drupal_add_css(drupal_get_path('module', 'idcards') .'/idcards.css');

Later on in the development, I added a custom theme (based off a Zen subtheme I use for many smaller sites), and in that custom theme's .info file, I added a stylesheet named idcards.css.

When I cleared all the caches, I noticed the custom form styling (added by the module's idcards.css file) was missing, and on further investigation, I found that the module's idcards.css file was not being added to the pages!

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