wp-cli/wp-cli — pull request #777 by danielbachhuber (2013-10-06 15:21:47+00:00)
Title: `wp post list --post__in=1,2,3` doesn't work

```
$ wp post list --post__in=100
PHP Warning: array_map(): Argument #2 should be an array in /Users/User/wp/core/wp-includes/query.php on line 2189
```