capistrano/capistrano — pull request #259 by kirs (2012-08-23 06:43:07+00:00)
Title: Added `the precompile_only_if_changed` option (Rails 3.1+)

If you set the `precompile_only_if_changed` option as true it will precompile Rails assets only if there are any changes since the last release. This option is disabled by default.