Remove the apply_filters attribute of [ap_content]

[pfefferle]

Proposed changes:

• [ap_content] always runs the_content now. The apply_filters attribute is removed.
• A template that still uses apply_filters="no" gets the filtered content and a _doing_it_wrong() notice. apply_filters="yes" was the default and stays quiet.
• The help tab only lists [ap_content].

Other information:

• Have you written new tests for your changes, if applicable?

apply_filters="no" skipped all the_content filters, also the ones a post needs to render correctly, e.g. plugins that hide parts of a post. With #3877 the summary also runs through the_content, so content and summary should work the same way.

Sites with apply_filters="no" in their legacy template will now get the output of all content filters, like share buttons. To keep a single filter out of federated content, remove it in activitypub_before_get_content:

add_action( 'activitypub_before_get_content', function () {
    remove_filter( 'the_content', 'sharing_display', 19 );
} );

Testing instructions:

• Switch to the legacy template mode and use [ap_content apply_filters="no"] in the template.
• Publish a post with WP_DEBUG on: the content runs through all content filters, and a notice is logged.
• Use [ap_content] or [ap_content apply_filters="yes"]: no notice.

Changelog entry

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Changelog Entry Details

Significance

• Patch
• Minor
• Major

Type

• Added - for new features
• Changed - for changes in existing functionality
• Deprecated - for soon-to-be removed features
• Removed - for now removed features
• Fixed - for any bug fixes
• Security - in case of vulnerabilities

Message

The option to turn off content filters in the post template was removed. Federated posts now always use the regular content filters.