Regression in `Ember.String.classify` in ~2.1

[cibernox]

In Ember 1.13 and 2.0, Ember.String.classify("be a teacher"); generates "BeATeacher"
In Ember 2.4, Ember.String.classify("be a teacher"); generates "BeA Teacher"

I've tracked the bug down to this commit: 85d725c

Here is a jsbing containing the both codes to see the issue. Switch between the old and new implementation by commenting/uncommentiong to see the error in action.

http://jsbin.com/xeloxuw/edit?js,console

[cibernox]

@skeate I tried to play with the regular expression but it is really over my head. Perhaps you want to take a look at it.

[skeate]

Checking it out now.

[acorncom]

There is a PR for this issue, but we need help testing it (see the PR for details)

[kamilogorek]

It looks like mentioned PR has been already resolved – #13044

[cibernox]

@kamilogorek But it's not merged. The only concern was performance?