Comment 14 for bug 281053

(In reply to comment #5)
> Using as a WORKAROUND:
> {} newline {}
> is acceptable in the all the cases mentioned in the Description.

Not always "{} newline {}". You use {} when you need to provide the missing operand of a binary operator. For example,

a+b_ij newline = c+d # left-hand side is missing at the second line
a+b_ij newline {} = c+d # add {} - OK

a+b_ij = newline c+d # right-hand side is missing at the first line
a+b_ij = {} newline = c+d # add {} - OK

And from my point of view, the requirement - "provide all operands, otherwise there will be the flipped question mark" - is simply awful, it would be a great improvement to get rid of it. newline's behavior will be much more intuitive.