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(Requires: 3.1+)
This option enables you to replace things like åäö to aao. Diacritics will normally not function properly in a web environment so this is a nice feature.
$mcImageManagerConfig['upload.replace_diacritics'] = true;
<add key="upload.replace_diacritics" value="true" />
upload.replace_diacritics=true
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