phinze/homebrew-cask — pull request #2594 by rolandwalker (2014-01-24 17:15:34+00:00)
Title: Support external commands beneath `brew cask`

I'm sure some people may think it is silly to have external-commands-under-external-commands. Rationale:
- We follow Homebrew philosophy where possible.
- There will always be features like #2246 that only a small number of users are interested in. Why not let them implement that feature for private use? It also gives us a satisfactory and positive way to answer the issue.
- Extensibility in the right hands can lead to unexpected new features, even new projects such as homebrew-cask itself.