filename transliteration patch drupal

filename_transliteration-3269385-double-file-ending.patch

diff --git a/src/FilenamePostprocessor.php b/src/FilenamePostprocessor.php
index 6f1e45b7634a26cf6c78a9dae573fda77dd79845..d2b5451eebbde31a7abb9dc689d9b73c2a85ad5d 100644
--- a/src/FilenamePostprocessor.php
+++ b/src/FilenamePostprocessor.php
@@ -70,8 +70,31 @@ class FilenamePostprocessor {
     $filename = str_replace('-_', '_', $filename);
     $filename = str_replace('_.', '.', $filename);
     $filename = str_replace('-.', '.', $filename);
+    $filename = $this->removeDoubleFileEnding($filename);
 
     return $filename;
   }
 
+  /**
+   * Remove duplicate file suffix.
+   *
+   * @param string $filename
+   *   Filename.
+   *
+   * @return string
+   *   Filename with duplicate suffix removed.
+   */
+  protected function removeDoubleFileEnding(string $filename) {
+    $exploded_filename = explode('.', $filename);
+    for ($i = count($exploded_filename) - 1; $i >= 0; $i -= 1) {
+      if (!isset($last)) {
+        $last = $exploded_filename[$i];
+      }
+      elseif ($exploded_filename[$i] == $last) {
+        unset($exploded_filename[$i]);
+      }
+    }
+    return implode('.', $exploded_filename);
+  }
+
 }