jessevdk/go-flags — pull request #90 by sqs (2014-07-26 06:10:12+00:00)
Title: Support completion of positional "rest" (slice/array) args

Given a command with a positional "rest" arg (`Filename []Filename`
here):

```
AddMultiCommand struct {
Positional struct {
Filename []Filename
} `positional-args:"yes"`
} `command:"add-multi"`
```

This PR implements completion for the rest arg using the element
type of the "rest" arg value (here, `Filename`).

Adds the test AddMultiCommand to TestCompletion to test the new
behavior.

Adds a sentence describing this new behavior in the flags.go package
documentation (previously, the docs did not clearly define whether
this behavior was present).