Provide language-specific overrides for transliteration.
array $overrides: Associative array of language-specific overrides whose keys are integer Unicode character codes, and whose values are the transliterations of those characters in the given language, to override default transliterations.
string $langcode: The code for the language that is being transliterated.
Note: this list is generated by pattern matching, so it may include some functions that are not actually implementations of this hook.
function hook_transliteration_overrides_alter(&$overrides, $langcode) {
// Provide special overrides for German for a custom site.
if ($langcode == 'de') {
// The core-provided transliteration of Ä is Ae, but we want just A.
$overrides[0xc4] = 'A';
}
}