--[[ Source script: https://it.wikivoyage.org/wiki/Modulo:HiddenUnicode Maintainer: Andyrom75 ]] function _hiddenUnicode( value ) -- Note the quote ("") below is not empty and actually contains a hidden unicode character. return mw.ustring.match(value or '',"") and ('[[Category:Listing with hidden unicode character]]') or '' end local p = {} function p.HiddenUnicodeValue( value ) return _hiddenUnicode( value ) end function p.HiddenUnicode( frame ) return _hiddenUnicode( frame and frame.args and frame.args[1] ) end return p