function unpackConfig()
		{
			if (typeof _config !== 'object')
				return;

			if (typeof _config.delimiter === 'string'
                && !Papa.BAD_DELIMITERS.filter(function(value) { return _config.delimiter.indexOf(value) !== -1; }).length)
			{
				_delimiter = _config.delimiter;
			}

			if (typeof _config.quotes === 'boolean'
				|| typeof _config.quotes === 'function'
				|| Array.isArray(_config.quotes))
				_quotes = _config.quotes;

			if (typeof _config.skipEmptyLines === 'boolean'
				|| typeof _config.skipEmptyLines === 'string')
				_skipEmptyLines = _config.skipEmptyLines;

			if (typeof _config.newline === 'string')
				_newline = _config.newline;

			if (typeof _config.quoteChar === 'string')
				_quoteChar = _config.quoteChar;

			if (typeof _config.header === 'boolean')
				_writeHeader = _config.header;

			if (Array.isArray(_config.columns)) {

				if (_config.columns.length === 0) throw new Error('Option columns is empty');

				_columns = _config.columns;
			}

			if (_config.escapeChar !== undefined) {
				_escapedQuote = _config.escapeChar + _quoteChar;
			}

			if (_config.escapeFormulae instanceof RegExp) {
				_escapeFormulae = _config.escapeFormulae;
			} else if (typeof _config.escapeFormulae === 'boolean' && _config.escapeFormulae) {
				_escapeFormulae =  /^[=+\-@\t\r].*$/;
			}
		}
whether to prevent outputting cells that can be parsed as formulae by spreadsheet software (Excel and LibreOffice)