BasicAPIExamples: positiveNumber does not always detect incorrect integers (----42)
In BasicAPIExamples, positiveNumber, you can get the following behavior: When you start with a negative number (-42), the OK button is correctly un-hilited. If you remove the sign (42), it correctly hilites. If you prepend - signs (----42), the 'correct-input' check-sign remains green incorrectly, and OK remains hilited incorrectly. Only when you remove one of the prepended - signs (---42), the 'correct-input' check-sign turns to red and the OK button is un-hilited.