Pantheon MU Plugin v1.5.6 now available with revised update strategy

The Pantheon MU Plugin v1.5.6 is now available.

WordPress sites can apply this update by applying upstream updates from the dashboard or via Terminus. WordPress (composer managed) sites can upgrade using composer update or by checking for updates in the dashboard.

Revised MU Plugin update strategy

Starting with this release, MU Plugin updates are deployed as standalone commits to the WordPress upstream, independent of WordPress core version updates. WordPress sites will now receive MU Plugin updates more frequently and as discrete, visible changes in the dashboard — rather than bundled with core version bumps.

What's new?

This release spans two MU Plugin versions, with updates concerning WordPress sites running Elasticsearch on Pantheon:

1.5.5

• Fixes an issue where wp elasticpress sync CLI commands indexed content with http:// image URLs instead of https://, causing broken images on the HTTPS frontend. A pantheon_elasticpress_force_https_in_cli filter is available for sites that need to opt out of this behavior.

1.5.6

• Fixes ElasticPress Autosuggest and Instant Results on sites using ElasticPress.io by routing browser-side search requests to the public host rather than an internal proxy URL that browsers cannot reach.

WordPress upstream

• WP_HOME and WP_SITEURL definitions in wp-config-pantheon.php are now conditional, so customer-defined values are respected and PHP notices are no longer generated when these constants are already set before wp-config-pantheon.php is included.