ref: 0df07d368816ed586a6e80a3ae524f6c4bc3fd08
dir: /test/asm/syntax-error-lexer-mode.asm/
newline equs "\n" def x = 1 newline def y = 2 println "x={d:x}, y={d:y}" ; the lexer is already in normal mode at the `AF`, so `newline` gets expanded def m = AF newline def n = 2 println "n={d:n}" ; the lexer is in raw mode at the `AF`, but the parser resets it to normal def AF = 1 newline def q = 2 println "q={d:q}"