diff --git a/core/modules/views/src/Plugin/views/filter/Combine.php b/core/modules/views/src/Plugin/views/filter/Combine.php
index d3a51d9..1b4ab9c 100644
--- a/core/modules/views/src/Plugin/views/filter/Combine.php
+++ b/core/modules/views/src/Plugin/views/filter/Combine.php
@@ -157,7 +157,7 @@ protected function opContainsWord($expression) {
 
     // Match all words separated by spaces or sentences encapsulated by double
     // quotes.
-    preg_match_all('/ (-?)("[^"]+"|[^" ]+)/i', ' ' . $this->value, $matches, PREG_SET_ORDER);
+    preg_match_all(static::WORDS_PATTERN, ' ' . $this->value, $matches, PREG_SET_ORDER);
 
     // Switch between the 'word' and 'allwords' operator.
     $type = $this->operator == 'word' ? 'OR' : 'AND';
diff --git a/core/modules/views/src/Plugin/views/filter/StringFilter.php b/core/modules/views/src/Plugin/views/filter/StringFilter.php
index 10c4070..618b584 100644
--- a/core/modules/views/src/Plugin/views/filter/StringFilter.php
+++ b/core/modules/views/src/Plugin/views/filter/StringFilter.php
@@ -14,6 +14,11 @@
  */
 class StringFilter extends FilterPluginBase {
 
+  /**
+   * All words separated by spaces or sentences encapsulated by double quotes.
+   */
+  const WORDS_PATTERN = '/ (-?)("[^"]+"|[^" ]+)/i';
+
   // exposed filter options
   protected $alwaysMultiple = TRUE;
 
@@ -267,7 +272,7 @@ protected function opContainsWord($field) {
       return;
     }
 
-    preg_match_all('/ (-?)("[^"]+"|[^" ]+)/i', ' ' . $this->value, $matches, PREG_SET_ORDER);
+    preg_match_all(static::WORDS_PATTERN, ' ' . $this->value, $matches, PREG_SET_ORDER);
     foreach ($matches as $match) {
       $phrase = FALSE;
       // Strip off phrase quotes