In Mercury Editor 2.2.x releases, layout and style option plugins have been removed as part of an effort to make it possible to uninstall ME without consequences (other than loosing the authoring enhancements directly provided by the module).
The legacy_me_style_options module provides support for the legacy style options removed from Mercury Editor.
- Add the repo to composer:
composer config repositories.legacy_me_style_options vcs https://github.com/AtenDesignGroup/legacy_me_style_options.git
- Install the module with composer:
composer require atendesigngroup/legacy_me_style_options
- Enable the module:
drush en legacy_me_style_options
- Upgrade Mercury Editor with composer:
composer require drupal/mercury_editor:^2.2
- Clear the cache:
drush cr
- Replace any references in your themes/modules from
mercury_editor/style_options
tolegacy_me_style_options/style_option
. - Test and verify all layouts and paragraphs are rendering correctly.