wp-admin/includes/class-plugin-upgrader.php:74Initializes the installation strings.
public function install_strings() { $this->strings['no_package'] = __( 'Installation package not available.' ); /* translators: %s: Package URL. */ $this->strings['downloading_package'] = sprintf( __( 'Downloading installation package from %s…' ), '<span class="code pre">%s</span>' ); $this->strings['unpack_package'] = __( 'Unpacking the package…' ); $this->strings['installing_package'] = __( 'Installing the plugin…' ); $this->strings['remove_old'] = __( 'Removing the current plugin…' ); $this->strings['remove_old_failed'] = __( 'Could not remove the current plugin.' ); $this->strings['no_files'] = __( 'The plugin contains no files.' ); $this->strings['process_failed'] = __( 'Plugin installation failed.' ); $this->strings['process_success'] = __( 'Plugin installed successfully.' ); /* translators: 1: Plugin name, 2: Plugin version. */ $this->strings['process_success_specific'] = __( 'Successfully installed the plugin <strong>%1$s %2$s</strong>.' ); if ( ! empty( $this->skin->overwrite ) ) { if ( 'update-plugin' === $this->skin->overwrite ) { $this->strings['installing_package'] = __( 'Updating the plugin…' ); $this->strings['process_failed'] = __( 'Plugin update failed.' ); $this->strings['process_success'] = __( 'Plugin updated successfully.' ); } if ( 'downgrade-plugin' === $this->skin->overwrite ) { $this->strings['installing_package'] = __( 'Downgrading the plugin…' ); $this->strings['process_failed'] = __( 'Plugin downgrade failed.' ); $this->strings['process_success'] = __( 'Plugin downgraded successfully.' ); } } }Introduced in 2.8.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-plugin-upgrader.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.