Tests some regular expressions that used to overflow the regular expression compilation preflight computation. On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE". PASS /(\d)(\1{1})/.exec("11").toString() is "11,1,1" PASS /^(\d{1,2})([ -:\/\.]{1})(\d{1,2})(\2{1})?(\d{2,4})?$/.exec("1:1").toString() is "1:1,1,:,1,," PASS /^(\d{4})([ -:\/\.]{1})(\d{1,2})(\2{1})(\d{1,2})T(\d{1,2})([ -:\/\.]{1})(\d{1,2})(\7{1})(\d{1,2})Z$/.exec("1234:5:6T7/8/9Z").toString() is "1234:5:6T7/8/9Z,1234,:,5,:,6,7,/,8,/,9" PASS /\[["'\s]{0,1}([\w-]*)["'\s]{0,1}([\W]{0,1}=){0,2}["'\s]{0,1}([\w-]*)["'\s]{0,1}\]$/.exec("[]").toString() is "[],,," PASS /(x){0,2}/.exec("").toString() is "," PASS /[¡]{4,6}/.exec("¡¡¡¡").toString() is "¡¡¡¡" PASS /[¡]{1,100}[¡]{1,100}[¡]{1,100}[¡]{1,100}[¡]{1,100}[¡]{1,100}[¡]{1,100}[¡]{1,100}/.exec("¡¡¡¡¡¡¡¡").toString() is "¡¡¡¡¡¡¡¡" PASS /{([\D\-\ca]]„£µ+?)}|[[\B-\u00d4]√π- ]]]{0,3}/i.exec("B√π- ]]").toString() is "B√π- ]]," PASS /|[x\B-\u00b5]/i.exec("").toString() is "" PASS new RegExp(complexPattern).exec(complexInput)[0] is complexInput PASS new RegExp(s); threw exception SyntaxError: Invalid regular expression: regular expression too large. PASS successfullyParsed is true TEST COMPLETE