bitovi/canjs — pull request #258 by daffl (2013-03-25 05:45:39+00:00)
Title: can.Observe.prototype.each overrides {{#each}} Mustache helper.

In Mustache.get (can/view/mustache/mustache.js line 822 in current HEAD) prototype functions and data members of the context object override Mustache helpers. This causes the "each" helper to be unavailable when using a can.Observe, since its prototype includes "each", and an exception is thrown due to the two functions having different type signatures.