Transliteration of search text

with the help of drupal transliteration module (https://www.drupal.org/project/transliteration)

please set:
$config ['cops_normalized_search'] = "1";

Issue 49 (https://github.com/seblucas/cops/issues/49) fixed
Goal : search for Honore should return books written by Honoré de Balzac
achieved

resources/transliteration-data/x00.php

@@ -0,0 +1,44 @@
+<?php
+
+$base = array(
+  // Note: to save memory plain ASCII mappings have been left out.
+  0x80 => '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
+  0x90 => '', '', '', '', '', '', '', '', '', '', '', '', '', '', '', '',
+  0xA0 => ' ', '!', 'C/', 'PS', '$?', 'Y=', '|', 'SS', '"', '(c)', 'a', '<<', '!', '', '(r)', '-',
+  0xB0 => 'deg', '+-', '2', '3', '\'', 'u', 'P', '*', ',', '1', 'o', '>>', '1/4', '1/2', '3/4', '?',
+  0xC0 => 'A', 'A', 'A', 'A', 'A', 'A', 'AE', 'C', 'E', 'E', 'E', 'E', 'I', 'I', 'I', 'I',
+  0xD0 => 'D', 'N', 'O', 'O', 'O', 'O', 'O', 'x', 'O', 'U', 'U', 'U', 'U', 'Y', 'Th', 'ss',
+  0xE0 => 'a', 'a', 'a', 'a', 'a', 'a', 'ae', 'c', 'e', 'e', 'e', 'e', 'i', 'i', 'i', 'i',
+  0xF0 => 'd', 'n', 'o', 'o', 'o', 'o', 'o', '/', 'o', 'u', 'u', 'u', 'u', 'y', 'th', 'y',
+);
+
+// Overrides for Danish input.
+$variant['da'] = array(
+  0xC5 => 'Aa',
+  0xC6 => 'Ae',
+  0xD8 => 'Oe',
+  0xE5 => 'aa',
+  0xE6 => 'ae',
+  0xF8 => 'oe',
+);
+
+// Overrides for German input.
+$variant['de'] = array(
+  0xC4 => 'Ae',
+  0xD6 => 'Oe',
+  0xDC => 'Ue',
+  0xE4 => 'ae',
+  0xF6 => 'oe',
+  0xFC => 'ue',
+  0xDF => 'ss',
+);
+
+// Overrides for Spanish input.
+$variant['es'] = array(
+  0xE1 => 'a',
+  0xE9 => 'e',
+  0xED => 'i',
+  0xF3 => 'o',
+  0xFA => 'u',
+  0xF1 => 'n',
+);