Enable shortcode expansion for oik based shortcodes

[bobbingwide]

A while ago, in WordPress 6.2, the ability to include shortcode in template parts was removed.
The call to do_shortcodes() was no longer being invoked on template parts.
This caused a bit of a kerfuffle.
But it wasn't a problem for my FSE themes since I was overriding template part processing.
The problem's now been resolved but caused me a bit of a headache as I tried to remember what to do...

I got nowhere for quite a while yesterday evening until I realised that I hadn't enabled my oik shortcodes.
The fix was to add some logic in functions.php.

/**
 * Enables oik based shortcodes.
 */
function oobit_init() {
    if (function_exists('bw_add_shortcode')) {
        do_action("oik_add_shortcodes");
  }
}
add_action( 'init', 'oobit_init', 20 );

During init processing we check if the function bw_add_shortcode is present. If it is then oik has been loaded so we should be able to run the oik_add_shortcodes action to cause oik and other plugins to lazy load shortcodes.

I'll need to use several oik based shortcodes which haven't yet been replaced by blocks ( e.g. [bw_blogs] ) and therefore probably need to include these in template parts rather than directly into templates.

Note: Rather than having every theme that's dependent upon oik to implement this it would be better if

• either oik could detect the need to invoke the action.
• or all the shortcodes are implemented as blocks.

[bobbingwide]

or all the shortcodes are implemented as blocks.

Enabling me to replace the template part currently called network-sites-theme.html

<!-- wp:shortcode -->
[bw_blogs]
<!-- /wp:shortcode -->

with a simple server side rendered block

<!-- wp:oik/bw_blogs /-->

[bobbingwide]

Rather than having every theme that's dependent upon oik to implement this it would be better if
either oik could detect the need to invoke the action.

I've prototyped a solution that oik can use to improve support for block themes.

See bobbingwide/oik#233

Note that this improvement to oik may not totally negate the need for functions.php.
It may still be necessary to implement some or all of the following

• custom block styles
• filter functions to adjust rendered block output - eg render_block_core/shortcode
• block override logic

For information about using filter functions to enable shortcodes to be used in the query block see bobbingwide/fizzie#28 (comment)

It may also be possible to implement the relevant code in a plugin. See the bigram plugin for several block rendering overrides including the classic block (filter name render_block_).