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diff --git a/web/modules/contrib/drupalmoduleupgrader/src/Plugin/DMU/Converter/Grep.php b/web/modules/contrib/drupalmoduleupgrader/src/Plugin/DMU/Converter/Grep.php
new file mode 100644
index 000000000..7fbf063d6
--- /dev/null
+++ b/web/modules/contrib/drupalmoduleupgrader/src/Plugin/DMU/Converter/Grep.php
@@ -0,0 +1,80 @@
+<?php
+
+namespace Drupal\drupalmoduleupgrader\Plugin\DMU\Converter;
+
+use Drupal\Core\StringTranslation\TranslationInterface;
+use Drupal\drupalmoduleupgrader\ConverterBase;
+use Drupal\drupalmoduleupgrader\TargetInterface;
+use Pharborist\Parser;
+use Psr\Log\LoggerInterface;
+use Symfony\Component\DependencyInjection\ContainerInterface;
+
+/**
+ * @Converter(
+ *  id = "grep",
+ *  description = @Translation("Searches for and replaces commonly-used code that has changed in Drupal 8.")
+ * )
+ */
+class Grep extends ConverterBase {
+
+  /**
+   * @var string[]
+   */
+  private $targets = [];
+
+  public function __construct(array $configuration, $plugin_id, $plugin_definition, TranslationInterface $translator, LoggerInterface $log) {
+    parent::__construct($configuration, $plugin_id, $plugin_definition, $translator, $log);
+
+    foreach ($configuration['globals'] as $variable => $replacement) {
+      $this->targets['global $' . $variable . ';'] = '$' . $variable . ' = ' . $replacement . ';';
+      $this->targets['$GLOBALS[\'' . $variable . '\']'] = $replacement;
+      $this->targets['$GLOBALS["' . $variable . '"]'] = $replacement;
+    }
+    foreach ($configuration['constants'] as $constant => $replacement) {
+      $this->targets[$constant] = $replacement;
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public static function create(ContainerInterface $container, array $configuration, $plugin_id, $plugin_definition) {
+    return new static(
+      $container->get('config.factory')->get('drupalmoduleupgrader.grep')->get('definitions'),
+      $plugin_id,
+      $plugin_definition,
+      $container->get('string_translation'),
+      $container->get('logger.factory')->get('drupalmoduleupgrader')
+    );
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function convert(TargetInterface $target) {
+    foreach ($this->configuration['function_calls'] as $function => $replace_with) {
+      $function_calls = $target->getIndexer('function_call')->get($function);
+      foreach ($function_calls as $function_call) {
+        $rewritten = str_ireplace($function, $replace_with, $function_call->getText());
+        $node = Parser::parseExpression($rewritten);
+        $function_call->replaceWith($node);
+        $target->save($node);
+      }
+    }
+
+    // Flush other open syntax trees to ensure that other plugins don't clobber
+    // our changes later.
+    $target->flush();
+
+    foreach ($target->getFinder() as $file) {
+      // Load in the entire contents of the module. This is criminally inefficient
+      // and wasteful of memory and should eventually be refactored into something
+      // a little more...I dunno, sustainable.
+      /** @var \Symfony\Component\Finder\SplFileInfo $file */
+      $search = array_keys($this->targets);
+      $replace = array_values($this->targets);
+      file_put_contents($file->getPathname(), str_replace($search, $replace, $file->getContents()));
+    }
+  }
+
+}