additional/pattern.js: Don't use exec() or test() here

[s-belichenko]

In some cases, this code will not work correctly. Calling these methods on the same RegExp, will start checking from the end of the previous comparison.

Just try to run this code:

var regex1 = RegExp('foo*');
var regex2 = RegExp('foo*','g');
var str1 = 'table football';

console.log(regex1.exec(str1));
console.log(regex1.exec(str1));
console.log(regex2.exec(str1));
console.log(regex2.exec(str1));
console.log(regex2.exec(str1));
console.log('==============');
console.log(str1.match(regex1));
console.log(str1.match(regex1));
console.log(str1.match(regex2));
console.log(str1.match(regex2));
console.log(str1.match(regex2));

Result:

Array ["foo"]
Array ["foo"]
Array ["foo"]
null
Array ["foo"]
"=============="
Array ["foo"]
Array ["foo"]
Array ["foo"]
Array ["foo"]
Array ["foo"]