+a = =\r
+b = 4\r
+--\r
+1:5-1:6: Unexpected token '=' (EQUALS). Expected one of ATTACHED_HASH, BEGIN_STRING, BLANK, CHAR, DO, ENFORCE, ESCAPED_SYMBOL, FLOAT, ID, IF, INTEGER, LAMBDA, LBRACKET, LET, LPAREN, MATCH, MDO, MINUS, SELECT, SELECT_DISTINCT, SELECT_FIRST, TRANSFORMATION, WHEN.\r