Item1822: IF broken for numerical comparisons against zero

Priority:	CurrentState:	AppliesTo:	Component:	WaitingFor:
Urgent	Closed	Engine

You type:

%IF{
  "-1 > 0"
  then="<b>test FAILED</b>"
  else="test PASSED"
}%

You get:

test PASSED

That's an error in BinaryOP and UnaryOP where the sub expression is defaulting to the empty string if their return value is perl-false, i.e. numerically zero.

So any further numerical comparison like -1 > 0 are evaluated lexically - not numerically because the second argument is translated to the empty string.

-- MichaelDaum - 10 Jul 2009