[jhummel]

In JavaScript you have to contend with a dozen different run environments. Maybe you realized your fix actually broke the feature in IE8 because you left a comma at the end of an array. It's quite common to have your fix break something in a very specific environment.

[mikeash]

That's fine, but then I don't understand what the problem is with having that IE8 fix which you didn't make until sometime later being a separate commit.