elixir-lang/elixir — pull request #2289 by lexmag (2014-05-18 22:14:22+00:00)
Title: Change `OptionParser` to remove `--` if it is the first argument

- [x] `OptionsParser`
- [x] `Mix.Tasks.Run`
- [ ] `Kernel.CLI`

Closes #2263 and #2268