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

One person getting bitten by a browser bug is no reason for every user of every website that uses a library to download that workaround code every time they load a page. That's the crux of the rollback.

@jdalton: Please go ahead and fork Underscore already -- I would love for there to be a version of it that strives for perfect spec behavior, with shims for all browsers. I would probably never use that version ... but it would be nice for it to exist.