About this parameter
Characters that should not be automatically normalized by the search engine.
By default, the Algolia search engine is normalizing characters to transform them to their lowercase counterpart
and strip them from their diacritics. As an example:
This default behavior being an issue with several languages, this setting allows one to disable the automatic
normalization on a given set of characters.
The setting only accepts lowercase characters, but also apply to their uppercase counterpart; for example,
Øis considered invalid, but specifying
øwill prevent both
Øto be normalized to
The setting only accepts characters that would be transformed otherwise; for example,
ois considered invalid.
Set the characters for which diacritics should be preserved
1 2 3 $index->setSettings([ 'keepDiacriticsOnCharacters' => 'øé' ]);