String.prototype.format should accept arbitrary number of arguments

[FND]

Rather - or in addition to - passing an array of substrings to the format method, it would be useful (less noisy) to be able to pass an arbitrary number of string arguments:

"%0 - %1: %2".format(["foo", "bar", "baz"]);

vs.

"%0 - %1: %2".format("foo", "bar", "baz");

[FND]

Jeremy has some reservations about overloading the existing argument (required for backwards compatibility):

[passing an array of non-strings - e.g. passing an array of arrays is] not explicitly invalid

it doesn't really [make sense] at the moment, because there's no format string that renders arrays, but there could be

a more modern approach wouldn't add methods to the String class

[MartinBudden]

Fixed in changeset:12289