function processor( parser ) {
	var delimiterLastIndex;
	var newlineLastIndex;
	var quoteLastIndex;
	var doublequote;
	var delimiter;
	var newline;
	var quote;
	var max;

	delimiterLastIndex = parser._delimiterLastIndex;
	delimiter = parser._delimiter;

	newlineLastIndex = parser._newlineLastIndex;
	newline = parser._newline;

	quoteLastIndex = parser._quoteLastIndex;
	quote = parser._quote;

	doublequote = parser._doublequote;

	max = maximum( maximum( delimiterLastIndex, newlineLastIndex ), quoteLastIndex ); // eslint-disable-line max-len

	return next;

	/**
	* Processes a character.
	*
	* @private
	* @param {string} ch - character
	* @returns {void}
	*/
	function next( ch ) {
		debug( 'Char: %s', ch );

		/*
		* Check for a quote character sequence.
		*
		* ## Notes
		*
		* -   When `doublequote` is `true`, quote character sequences are escaped by a preceding quote character sequence.
		* -   When `doublequote` is `false`, quote character sequences must be explicitly escaped using an escape character sequence.
		*/
		if (
			doublequote &&
			ch === quote[ quoteLastIndex ] &&
			parser._scan( quote, quoteLastIndex )
		) {
			debug( 'Double quote.' );
			parser._push( ch )._changeState( SKIPPED_QUOTED_FIELD );
			return;
		}
		/*
		* Check for a field delimiter.
		*/
		if (
			ch === delimiter[ delimiterLastIndex ] &&
			parser._scan( delimiter, delimiterLastIndex )
		) {
			debug( 'Delimiter.' );
			parser._push( ch )._changeState( SKIPPED_FIELD );
			return;
		}
		/*
		* Check for a row separator.
		*/
		if (
			ch === newline[ newlineLastIndex ] &&
			parser._scan( newline, newlineLastIndex )
		) {
			// Rewind the cursor to point to the last character before the newline character sequence:
			debug( 'Newline.' );
			parser._rewind( newlineLastIndex )._changeState( INIT );
			return;
		}
		/*
		* Check for a non-special character sequence.
		*
		* ## Notes
		*
		* -   Field separators, row separators, and escaped quote sequences must immediately follow a potential closing quote sequence. At some point, we'll have processed a greater number of characters than exists in any of the special character sequences, meaning that none of those sequences immediately follow the quote sequence which led to the current state. Once this happens, we in an invalid state.
		*/
		if ( parser._cursor-parser._qidx >= max ) {
			debug( 'Invalid closing quote.' );
			parser._push( ch )._changeState( SKIPPED_INVALID_QUOTE_END );
			return;
		}
		// Continue processing until we can transition to a new state:
		parser._push( ch );
	}
}
Returns a function for processing an ending quote sequence within a skipped line.

@private
@param {Parser} parser - parser instance
@returns {Function} processing function