documentcloud/underscore — comment on commit 9e4192729375c8eab68913d36de9fbb8ffbbdfcc
File:  line 0
By kitcambridge:

There are two issues that this patch addresses: correctly enumerating inherited properties in IE 6-8, and correctly enumerating the `prototype` and `constructor` properties. The latter doesn't increase the file size substantially, and appears to be sufficiently prevalent in modern browsers to warrant a workaround. If the increase in size incurred by the former is unacceptable, then why not simply drop IE 6-8 support entirely?