Problems displaying oik_shortcodes when WordPress SEO is activated

[bobbingwide]

Problem description

The oik_shortcodes post type will add a [bw_code] shortcode to the content
if no shortcodes are present. This shortcode is then run and further functionality invoked to display Examples, Snippets etc.

Sometimes this works.
Other times we get recursion, leading to an un-captured Fatal error and an Aw, snap message from Chrome.

Problem explanation

When WordPress SEO is trying to display OpenGraph tags in the header it attempts to obtain the meta description for the post. If this is not available it builds one from the excerpt. If that is not available WordPress creates an excerpt which invokes the_content.

Not knowing any better all the plugins that hook into the_content do their thing and then the excerpt gets produced.

Problems can occur if nested shortcode expansion is performed and 'the_content' filtering goes recursive.

Even if it doesn't go wrong, you'll notice that up to twice as much work is being done than is actually required.

Workaround

Either define a Meta Description in the WordPress SEO meta box.
or deactivate WordPress SEO.

Solution

Add oik_get_the_excerpt() to prevent recursion in 'the_content' processing.
Change the 'the_content' filter logic so that content is only 'enhanced' once.

[bobbingwide]

The question asked in oik issue 115 was “does this fix this problem?”. The answer is that it’s a lot better now. There are still problems with the [bw_code] shortcode being expanded in the block editor, but these are addressed elsewhere. See #58.

[bobbingwide]

finally closing this one then.