jdalton/underscore — comment on commit 4a5c2ac818ed856813a7e7633f203cf186b942af
File: underscore.js line 1021
By jdalton:

I saw in the change log

> 0.5.5
Fix for a bug in MobileSafari's OOP-wrapper, with the arguments object.

Can you explain what that bug was *(am I re-introducing it?)*.