The Java ChoiceFormat documentation has an example pattern:

"{0,choice,-1#is negative| 0#is zero or fraction | 1#is one |1.0<is 1+ |2#is two |2<is more than 2.}"

As of AUI 5.3, AJS.format() supports ChoiceFormat, but that example will break with an error of "Cannot read property '1' of null"

There are two different parts that break, due to the format of the regexes inside AJS.format():

• Negative number
• Whitespace surrounding the "|" characters