Rails 3.1 Sprockets require directives - is there a way to exclude particular files?

This is possible with Sprocket's new stub directive which is available in Sprockets v2.2.0 and up. However, Rails 3.2 will only ever use Sprockets v2.1.3 which does not have this feature. As of now, the current Edge Rails has the stub directive and it will officially be in Rails 4.0 and above.

Usage:

//= require jquery//= require_tree .//= stub unwanted_js

stub directives can not be overridden by subsequent require or include directives.

If you want to use the stub directive in your Rails 3.2 project you will have to switch to Edge Rails, or branch your Rails gem with its Sprockets dependency modified to version 2.2.0.

Since the release of rails 3.2.9, it has support to lock the sprockets to version 2.2.x so that we can use the //= stub directive that latest sprockets have.

//= stub unwanted_js

http://weblog.rubyonrails.org/2012/11/12/ann-rails-3-2-9-has-been-released/

So, to use it, just upgrade to Rails 3.2.9

NB: This answer is now out of date, with an update to Sprockets having this feature. See the answer below.

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This is not possible with current Sprockets directives, but it seems like a handy feature.

The other way to to manually list each file you want.

Perhaps you could file this as a feature request over on the Sprockets repo? :-)